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1. Mechanical behavior, mineralogy, and microstructure of alkali-activated wastes-based binder for a clayey soil stabilization

Author

Tonini de Araújo, M, Tonatto Ferrazzo, S, Mansur Chaves, H, Gravina da Rocha, C, Cesar Consoli, N, Tonini de Araújo, M, Tonatto Ferrazzo, S, Mansur Chaves, H, Gravina da Rocha, C, and Cesar Consoli, N

Abstract

This paper evaluated the mechanical and microstructural behavior of a clayey soil stabilized by an alkali-activated binder composed of two residues (sugarcane bagasse ash and hydrated eggshell lime) and sodium hydroxide. The sugarcane bagasse ash, an agro-industrial waste, contains high aluminosilicates content (64.74 % silica and 13.25 % alumina), needed for alkali-activation processes; calcium additions from the lime (72.90 % calcium oxide) allow curing at room temperatures. An experimental design analyzed the mechanical behavior of soil-alkali activated binder, and soil-Portland cement mixtures. Unconfined compressive strength (UCS), tensile strength (STS), stiffness (G0), durability (accumulated loss of mass, ALM), and matric suction tests, and XRD and SEM-EDS investigations were performed. Statistical analysis showed a higher influence of the dry unit weight over the binders’ mechanical results. In addition, binders presented similar mechanical results for mixtures cured in room temperature (23 °C) (e.g., UCS around 5 MPa for high density-high binder content samples with 30 % moisture content, and STS around 0.6 MPa for high density-high binder content samples with 28 % moisture content). For both binders, the lowest ALM was 1.63 % for high density-high binder content samples. The porosity/binder content index was a reliable parameter when evaluating soil stabilization. XRD and SEM analysis of alkali-activated samples showed, respectively, an amorphous hump attributed to disordered structures (C[sbnd]S[sbnd]H and (C,N)-A[sbnd]S[sbnd]H) and soil particles embedded in a cementitious matrix. Higher temperature (40 °C) and curing period (28 days) resulted in a denser structure.

Published
2023

3. Sustainable Binders Stabilizing Dispersive Clay

Author

Scheuermann Filho HC, Beck Saldanha R, Gravina da Rocha C, and Cesar Consoli N

Subjects
0905 Civil Engineering, 0912 Materials Engineering, Building & Construction
Published
2021

7. Shear response of iron ore tailings under monotonic loadings

Author

Medina Guilherme Schmitt, Farenzena Helena Portela, Rodrigues Bráulio Araújo, Silva João Paulo, Festugato Lucas, and Consoli Nilo Cesar

Subjects
mine tailings, simple shear, strength envelopes, effective stresses, Environmental sciences, GE1-350
Abstract

Dry stacking is a disposition method that is quickly becoming a trend for the mining industry in Brazil. With several cases in which compacted mine tailings are positioned on the top of hydraulically disposed tailings which were placed into pits. The present research assessed the mechanical response of hydraulically disposed iron ore tailings collected from a pit that was formerly a mining site. To better understand the mechanical behaviour of mine tailings under such conditions, the investigation of their monotonic response is of great importance. The studied material was classified as a silty sand with traces of clay size. A very loose condition with distinct confining stresses was tested monotonically on a simple shear equipment. Simple shear tests were performed in an apparatus that can directly measure pore pressure, guaranteeing an effective stresses analysis. A plane strain condition was applied on fully saturated samples under undrained loading conditions. Results showed the agreement of the strength envelopes of monotonic stress paths, the effective friction angle of the material was 33.2° and no cohesive intercept.

Published
2024
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8. On the behavior of compacted filtered iron ore tailings submitted to high pressures

Author

Silva João Paulo, Carvalho João Vítor, Wagner Alexia Cindy, and Consoli Nilo Cesar

Subjects
tailings, dry stacking, high pressures, particle breakage, Environmental sciences, GE1-350
Abstract

Mine tailings have been disposed of in a slurry form in tailings dams for many years. However, recent disasters involving conventional disposal in dams reinforced the need for alternative structures to store these materials safely. One alternative is dry stacking of tailings. In these structures, tailings are filtered to low moisture content and then compacted in layers. Due to material compaction, dry stacks tend to be stable and are usually built with elevated heights to use the available area better. So, it becomes essential to understand the mechanical behavior of tailings subjected to high pressures, especially concerning the possibility of grain breakage. In this context, the present research focuses on studying the geotechnical behavior of iron ore tailings from different stages of ore beneficiation plants in Quadrilátero Ferrífero, Brazil, when subjected to high pressures both in compression and in shear paths. The results demonstrate that the inclusion of fines can change the geotechnical performance of the dry stack tailings considering the same compaction energy (greater strength, stiffness, and lower permeability) both in drained and undrained conditions. No breakage could be identified for the stress level studied (6 MPa).

Published
2024
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9. The effect of key parameters on the mechanical response of artificially cemented iron ore tailings for dry stacking purposes

Author

Consoli Nilo Cesar, Delgado Bruno Guimarães, Silva João Paulo Sousa, and Scheuermann Filho Hugo Carlos

Subjects
iron ore tailings, dry stacking, artificially cemented tailings, soil stabilization, Environmental sciences, GE1-350
Abstract

Regulations prohibiting the construction of new tailings dams using the upstream method and requiring the closure of the existing ones have been recently introduced in Brazil. This scenario demands the sought for alternatives to manage both the previously disposed tailings as well as the upcoming generated mining residues. Fortunately, advances in dewatering technologies have enabled the tailings’ dried disposal in stacks having hundreds of meters rather than the traditional slurry deposition. Eventually, a cement material can be incorporated into the tailings before the stacking aiming to enhance the overall material’s performance, permitting the construction of higher and more inclined piles. In this regard,the present study evaluates the effect of key variables on the stiffness and strength of compacted iron ore tailings-cement blends. Specifically, the effect of the following variables was statistically evaluated through a full factorial design set: dry unit weight (17, 18, and 19 kN/m3), amount of cement (1, 3, and 5%), curing period (7, 28, and 90 days) and cement type (pozzolana Portland cement and high early strength Portland cement). The results have shown that all the main factors, and most of the second-order interactions, were significant in altering both the strength and stiffness of the studied mixtures, with a highlight to the amount of cement, curing time, and dry density. The type of cement, in turn, has exerted a marginal influence. As well, both responses could be successfully correlated to the adjusted porosity/cement index via power-type functions.

Published
2024
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10. Assessing the mechanical properties of a cemented sand focusing on experimental and theoretical studies

Author

Corte Marina Bellaver, Festugato Lucas, Consoli Nilo Cesar, Ibraim Erdin, and Diambra Andrea

Subjects
cemented sand, porosity/cement index, strength, stiffness, Environmental sciences, GE1-350
Abstract

The incorporation of cement to improve soil properties and attract the re-use of locally available materials has become a part of current geotechnical engineering projects. Its applicability varies from construction of pavement base layers, slope protection for earth dams, to support layer for shallow foundations. Unconfined behaviour might be used to evaluate the basic mechanical properties and efficiency of the cemented soils. The proposed relationship between porosity () and volumetric cement content (Civ), presented as porosity cement index (/Civ), was shown to play an important role in the initial shear stiffness (G0), tensile (qt) and compressive (qu) strength of cemented materials. This research aims to assess these parameters through experimental investigation and modelling predictions. Bender elements testing were carried out to assess the maximum initial shear stiffness (G0) prior to specimens testing, and assessing G0 evolution during cement hydration, focusing on the anisotropic/isotropic behaviour established during specimen moulding. Results show a good correlation between experimental and numerical data. It was also observed that cementation isotropises G0 during curing.

Published
2024
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12. Prognostic Impact of Diabetes and Prediabetes on Survival Outcomes in Patients With Chronic Heart Failure: A Post‐Hoc Analysis of the GISSI‐HF (Gruppo Italiano per lo Studio della Sopravvivenza nella Insufficienza Cardiaca‐Heart Failure) Trial

Author

Dauriz, Marco, primary, Targher, Giovanni, additional, Temporelli, Pier Luigi, additional, Lucci, Donata, additional, Gonzini, Lucio, additional, Nicolosi, Gian Luigi, additional, Marchioli, Roberto, additional, Tognoni, Gianni, additional, Latini, Roberto, additional, Cosmi, Franco, additional, Tavazzi, Luigi, additional, Maggioni, Aldo Pietro, additional, Barlera, Simona, additional, Franzosi, Maria Grazia, additional, Maggioni, Aldo P., additional, Porcu, Maurizio, additional, Yusuf, Salim, additional, Camerini, Fulvio, additional, Cohn, Jay N., additional, Decarli, Adriano, additional, Pitt, Bertram, additional, Sleight, Peter, additional, Poole‐Wilson, Philip A., additional, Geraci, Enrico, additional, Scherillo, Marino, additional, Fabbri, Gianna, additional, Bartolomei, Barbara, additional, Bertoli, Daniele, additional, Cobelli, Franco, additional, Fresco, Claudio, additional, Ledda, Antonietta, additional, Levantesi, Giacomo, additional, Opasich, Cristina, additional, Rusconi, Franco, additional, Sinagra, Gianfranco, additional, Turazza, Fabio, additional, Volpi, Alberto, additional, Ceseri, Martina, additional, Alongi, Gianluca, additional, Atzori, Antonio, additional, Bambi, Filippo, additional, Bastarolo, Desiree, additional, Bianchini, Francesca, additional, Cangioli, Iacopo, additional, Canu, Vittoriana, additional, Caporusso, Concetta, additional, Cenni, Gabriele, additional, Cintelli, Laura, additional, Cocchio, Michele, additional, Confente, Alessia, additional, Fenicia, Eva, additional, Friso, Giorgio, additional, Gianfriddo, Marco, additional, Grilli, Gianluca, additional, Lazzaro, Beatrice, additional, Lonardo, Giuseppe, additional, Luise, Alessia, additional, Nota, Rachele, additional, Orlando, Mariaelena, additional, Petrolo, Rosaria, additional, Pierattini, Chiara, additional, Pierota, Valeria, additional, Provenzani, Alessandro, additional, Quartuccio, Velia, additional, Ragno, Anna, additional, Serio, Chiara, additional, Spolaor, Alvise, additional, Tafi, Arianna, additional, Tellaroli, Elisa, additional, Ghio, Stefano, additional, Ghizzardi, Elisa, additional, Masson, Serge, additional, Crociati, Lella, additional, La Rovere, Maria Teresa, additional, Corrà, Ugo, additional, Finzi, Andrea, additional, Gorini, Marco, additional, Milani, Valentina, additional, Orsini, Giampietro, additional, Bianchini, Elisa, additional, Cabiddu, Silvia, additional, Cangioli, Ilaria, additional, Cipressa, Laura, additional, Cipressa, Maria Lucia, additional, Di Bitetto, Giuseppina, additional, Ferri, Barbara, additional, Galbiati, Luisa, additional, Lorimer, Andrea, additional, Pera, Carla, additional, Priami, Paola, additional, Vasamì, Antonella, additional, Moccetti, T., additional, Rossi, M.G., additional, Pasotti, E., additional, Vaghi, F., additional, Roncarolo, P., additional, Zunino, M.T., additional, Matta, F., additional, Perinetto, E. Actis, additional, Gaita, F., additional, Azzaro, G., additional, Zanetta, M., additional, Paino, A.M., additional, Parravicini, U., additional, Vegis, D., additional, Conte, R., additional, Ferraro, P., additional, De Bernardi, A., additional, Morelloni, S., additional, Fagnani, M., additional, Lucchina, P. Greco, additional, Montagna, L., additional, Bellone, E., additional, Sappè, D., additional, Ferraro, F., additional, Delucchi, M., additional, Reynaud, S.G., additional, Dore, M., additional, La Brocca, A., additional, Massobrio, N., additional, Bo, L., additional, Trinchero, R., additional, Imazio, M., additional, Brocchi, G., additional, Nejrotti, A., additional, Rissone, L., additional, Gabasio, S., additional, Zocchi, C., additional, Randazzo, S., additional, Crenna, A., additional, Giannuzzi, P., additional, Bonanomi, E., additional, Mezzani, A., additional, De Marchi, M., additional, Begliuomini, G., additional, Gianonatti, C.A., additional, Gavazzi, A., additional, Grosu, A., additional, Dei Cas, L., additional, Nodari, S., additional, Garyfallidis, P., additional, Bertoletti, A., additional, Bonifazi, C., additional, Arisi, S., additional, Mascaro, F., additional, Fraccarollo, M., additional, Dell'Orto, S., additional, Sfolcini, M., additional, Bortolini, F., additional, Raccagni, D., additional, Turelli, A., additional, Santarone, M., additional, Miglierina, E., additional, Sormani, L., additional, Jemoli, R., additional, Tettamanti, F., additional, Pirelli, S., additional, Bianchi, C., additional, Verde, S., additional, Mariani, M., additional, Ziacchi, V., additional, Ferrazza, A., additional, Russo, A., additional, Bortolotti, M., additional, Pasini, G.F., additional, Volpi, A., additional, Jones, K.N., additional, Cuzzucrea, D., additional, Gullace, G., additional, Carbone, C., additional, Granata, A., additional, De Servi, S., additional, Del Rosso, G., additional, Inserra, C., additional, Renaldini, E., additional, Zappa, C., additional, Moretti, M., additional, Zanini, R., additional, Ferrari, M., additional, Moroni, E., additional, Cei, A., additional, Lissi, C., additional, Dovico, E., additional, Fiorentini, C., additional, Palermo, P., additional, Brusoni, B., additional, Negrini, M., additional, Heyman, J., additional, Danzi, G.B., additional, Finzi, A., additional, Frigerio, M., additional, Turazza, F., additional, Beretta, L., additional, Sachero, A., additional, Casazza, F., additional, Squadroni, L., additional, Lombardi, F., additional, Marano, L., additional, Margonato, A., additional, Fragasso, G., additional, Febo, O.C., additional, Aiolfi, E., additional, Olmetti, F., additional, Grieco, A., additional, Antonazzo, V., additional, Specchia, G., additional, Mortara, A., additional, Robustelli, F., additional, Songini, M.G., additional, Schweiger, C., additional, Frisinghelli, A., additional, Palvarini, M., additional, Campana, C., additional, Scelsi, L., additional, Ajmone Marsan, N., additional, Cobelli, F., additional, Gualco, A., additional, Opasich, C., additional, De Feo, S., additional, Mazzucco, R., additional, Iannone, M.A., additional, Diaco, T., additional, Zaniboni, D., additional, Milanesi, G., additional, Nassiacos, D., additional, Meloni, S., additional, Giani, P., additional, Nicoli, T., additional, Malinverni, C., additional, Gusmini, A., additional, Pozzoni, L., additional, Bisiani, G., additional, Margaroli, P., additional, Schizzarotto, A., additional, Daverio, A., additional, Occhi, G., additional, Partesana, N., additional, Bandini, P., additional, Rosella, M.G., additional, Giustiniani, S., additional, Cucchi, G., additional, Pedretti, R., additional, Raimondo, R., additional, Vaninetti, R., additional, Fedele, A., additional, Ghezzi, I., additional, Rezzonico, E., additional, Salerno Uriarte, J.A., additional, Morandi, F., additional, Salvucci, F., additional, Valenti, C., additional, Graziano, G., additional, Romanò, M., additional, Cimminiello, C., additional, Mangone, I., additional, Lombardo, M., additional, Quorso, P., additional, Marinoni, G., additional, Breghi, M., additional, Erckert, M., additional, Dienstl, A., additional, Mirante Marini, G., additional, Stefenelli, C., additional, Cioffi, G., additional, Buczkowska, E., additional, Bonanome, A., additional, Bazzanini, F., additional, Parissenti, L., additional, Serafini, C., additional, Catania, G., additional, Tarantini, L., additional, Rigatelli, G., additional, Boni, S., additional, Pasini, A., additional, Masini, E., additional, Zampiero, A.A., additional, Zanchetta, M., additional, Franceschetto, L., additional, Delise, P., additional, Marcon, C., additional, Sacchetta, A., additional, Borgese, L., additional, Artusi, L., additional, Casolino, P., additional, Corbara, F., additional, Banzato, A., additional, Barbiero, M., additional, Aldegheri, M.P., additional, Bazzucco, R., additional, Crivellenti, G., additional, Raviele, A., additional, Zanella, C., additional, Pascotto, P., additional, Sarto, P., additional, Milan, S., additional, Barbieri, E., additional, Girardi, P., additional, Dalla Villa, W., additional, Dalle Mule, J., additional, Di Sipio, M.L., additional, Cazzin, R., additional, Milan, D., additional, Zonzin, P., additional, Carraro, M., additional, Rossi, R., additional, Carbonieri, E., additional, Rossi, I., additional, Stritoni, P., additional, Meneghetti, P., additional, Risica, G., additional, Tenderini, P.L., additional, Vassanelli, C., additional, Zanolla, L., additional, Perini, G., additional, Brighetti, G., additional, Chiozza, R., additional, Giuliano, G., additional, Gortan, R., additional, Cesanelli, R., additional, Nicolosi, G.L., additional, Piazza, R., additional, Mos, L., additional, Vriz, O., additional, Pavan, D., additional, Pascottini, G., additional, Alberti, E., additional, Werren, M., additional, Solinas, L., additional, Sinagra, G., additional, Longaro, F., additional, Fioretti, P., additional, Albanese, M.C., additional, Miani, D., additional, Gianrossi, R., additional, Pende, A., additional, Rubartelli, P., additional, Magaia, O., additional, Domenicucci, S., additional, Caruso, D., additional, Faraguti, A.S., additional, Magliani, L., additional, Miccoli, F., additional, Guglielmino, G., additional, Bertoli, D., additional, Cantarelli, A., additional, Orlandi, S., additional, Vallebona, A., additional, Pozzati, A., additional, Brega, G., additional, Pancaldi, L.G., additional, Vandelli, R., additional, Urbinati, S., additional, Poci, M.G., additional, Zoli, M., additional, Costa, G.M., additional, Guiducci, U., additional, Zobbi, G., additional, Tartagni, F., additional, Tisselli, A., additional, Gentili, A., additional, Pieri, P., additional, Cagnetta, E., additional, Bendinelli, S., additional, Barbieri, A., additional, Conti, R., additional, Ferrari, R., additional, Merlini, F., additional, Fucili, A., additional, Moruzzi, P., additional, Buia, E., additional, Galvani, M., additional, Ferrini, D., additional, Baggioni, G., additional, Yiannacopulu, P., additional, Canè, G., additional, Bonfiglioli, A., additional, Zandomeneghi, R., additional, Brugioni, L., additional, Giannini, A., additional, Di Ruvo, R., additional, Giuliani, M., additional, Rusconi, L., additional, Del Corso, P., additional, Piovaccari, G., additional, Bologna, F., additional, Venturi, P., additional, Melandri, F., additional, Bagni, E., additional, Bolognese, L., additional, Perticucci, R., additional, Zuppiroli, A., additional, Nannini, M., additional, Consoli, N., additional, Petrone, P., additional, Pipitò, C., additional, Colombi, L., additional, Bernardi, D., additional, Mariani, P.R., additional, Testa, R., additional, Mazzinghi, F., additional, Cosmi, F., additional, Cosmi, D., additional, Zipoli, A., additional, Cecchi, A., additional, Castelli, G., additional, Ciaccheri, M., additional, Mori, F., additional, Pieri, F., additional, Valoti, P., additional, Chiarantini, D., additional, Santoro, G.M., additional, Minneci, C., additional, Marchi, F., additional, Milli, M., additional, Zambaldi, G., additional, Brandinelli Geri, A.A., additional, Cipriani, M., additional, Alessandri, M., additional, Severi, S., additional, Stefanelli, S., additional, Comella, A., additional, Poddighe, R., additional, Digiorgio, A., additional, Carluccio, M., additional, Berti, S., additional, Rizza, A., additional, Bonatti, V., additional, Molendi, V., additional, Brancato, A., additional, D'Aprile, N., additional, Giappichini, G., additional, Del Vecchio, S., additional, Mantini, G., additional, De Tommasi, F., additional, Meucci, G., additional, Cordoni, M., additional, Bechi, S., additional, Barsotti, L., additional, Baldini, P., additional, Romei, M., additional, Scopelliti, G., additional, Lauri, G., additional, Pestelli, F., additional, Furiozzi, F., additional, Cocchieri, M., additional, Severini, D., additional, Patriarchi, F., additional, Chiocchi, P., additional, Buccolieri, M., additional, Martinelli, S., additional, Wee, A., additional, Angelici, F., additional, Bernardinangeli, M., additional, Proietti, G., additional, Biscottini, B., additional, Panciarola, R., additional, Marinacci, L., additional, Perna, G.P., additional, Gabrielli, D., additional, Moraca, A., additional, Moretti, L., additional, Partemi, L., additional, Gregori, G., additional, Amici, R., additional, Patteri, G., additional, Capone, P., additional, Savini, E., additional, Morgagni, G.L., additional, Paccaloni, L., additional, Pezzuoli, F., additional, Carincola, S., additional, Papi, S., additional, De Crescentini, S., additional, Gerardi, P., additional, Midi, P., additional, Gallenzi, E., additional, Pajes, G., additional, Mancone, C., additional, Di Spirito, V., additional, Di Gennaro, M., additional, Calcagno, S., additional, Toscano, S., additional, Antonicoli, S., additional, Carta, F., additional, Giorgi, G., additional, Comito, F., additional, Daniele, E., additional, Ciarla, O., additional, Gelfo, P.G., additional, Acquaviva, A., additional, Testa, D., additional, Testa, G., additional, Pagliaro, F.A., additional, Russo, F., additional, Vetta, F., additional, Marchese, I., additional, Di Sciascio, G., additional, D'Ambrosio, A., additional, Leggio, F., additional, Del Sindaco, D., additional, Lacchè, A., additional, Avallone, A., additional, Risa, M.P., additional, Azzolini, P., additional, Baldo, E., additional, Giovannini, E., additional, Pulignano, G., additional, Tondo, C., additional, Picchio, E., additional, ani, E., additional, Tanzi, P., additional, Pozzar, F., additional, Farnetti, F., additional, Azzarito, M., additional, Santini, M., additional, Varveri, A., additional, Ferraiuolo, G., additional, Valtorta, C., additional, Gaspardone, A., additional, Barbato, G., additional, Ceci, V., additional, Aspromonte, N., additional, Bellocci, F., additional, Colizzi, C., additional, Fedele, F., additional, Perez, F.I., additional, Galati, A., additional, Rossetti, A., additional, Mainella, A., additional, etta, D., additional, Matteucci, C., additional, Busi, G., additional, De Angelis, A., additional, Farina, G., additional, Granatelli, A., additional, Leone, F., additional, Frasca, F., additional, Di Giovambattista, R., additional, Castellani, G., additional, Massaro, G., additional, Mastrogiuseppe, G., additional, Vacri, A., additional, De Sanctis, F., additional, Cioli, M., additional, Di Luzio, S., additional, Napoletano, C., additional, Piccioni, L.L., additional, De Simone, G., additional, Ottaviano, A., additional, Mazza, V., additional, Spedaliere, C., additional, Staniscia, D., additional, Calgione, E., additional, De Marco, G., additional, Chiacchio, T., additional, Di Napoli, T., additional, Romanzi, S., additional, Salvatore, G., additional, Golino, P., additional, Palermo, A., additional, Mascia, F., additional, Vetrano, A., additional, Vinciguerra, A., additional, Caliendo, L., additional, Longobardi, R., additional, De Caro, G., additional, Di Nola, R., additional, Piemonte, F., additional, Prinzi, D., additional, De Rosa, P., additional, De Rosa, V., additional, Riello, F., additional, Capuano, V., additional, Vecchio, G., additional, Landi, M., additional, Amato, S., additional, Garofalo, M., additional, D'Avino, M., additional, Sensale, P., additional, Maiolica, O., additional, Santoro, R., additional, Caso, P., additional, Miceli, D., additional, Maurea, N., additional, Bianchi, U., additional, Crispo, C., additional, Chiariello, M., additional, Perrone Filardi, P., additional, Russo, L., additional, Capuano, N., additional, Ungaro, G., additional, Vergara, G., additional, Scafuro, F., additional, D'Angelo, G., additional, Campaniello, C., additional, Bottiglieri, P., additional, Volpe, A., additional, Battista, R., additional, De Risi, L., additional, Cardillo, G., additional, Sibilio, G., additional, Marino, A.P., additional, Silvestri, F., additional, Predotti, P., additional, Iervoglini, A., additional, De Matteis, C., additional, Sarnicola, P., additional, Matarazzo, M.M., additional, Baldi, S., additional, Iuliano, V., additional, Astarita, C., additional, Cuccaro, P., additional, Liguori, A., additional, Liguori, G., additional, Gregorio, G., additional, Petraglia, L., additional, Antonelli, G., additional, Amodio, G., additional, De Luca, I., additional, Traversa, D., additional, Franchini, G., additional, Lenti, M.L., additional, Cavallari, D., additional, D'Agostino, C., additional, Scalera, G., additional, Altamura, C.M., additional, Russo, M., additional, Mascolo, A.R., additional, Pettinati, G., additional, Ciricugno, S.A., additional, Scrutinio, D., additional, Passantino, A., additional, Mastrangelo, D., additional, Di Masi, A., additional, De Carne, R., additional, Cannone, M., additional, Dibiase, F., additional, Pensato, M., additional, Loliva, F., additional, Trapani, F., additional, Panettieri, I., additional, Leone, L., additional, Di Biase, M., additional, Carrone, M., additional, Gallone, V., additional, Cocco, F., additional, Costantini, M., additional, Tritto, C., additional, Cavalieri, F., additional, Stella, L., additional, Magliari, F., additional, Callerame, M., additional, De Giorgi, A., additional, Pellegrino, L., additional, Correra, M., additional, Portulano, V., additional, Nisi, G.L., additional, Grassi, G., additional, Cristallo, E., additional, De Laura, D., additional, Salerno, C., additional, Fanelli, R., additional, Villella, M., additional, Pede, S., additional, Renna, A., additional, De Lorenzi, E., additional, Urso, L., additional, Lenti, V., additional, Peluso, A., additional, Baldi, N., additional, Polimeni, G., additional, Palma, P., additional, Lauletta, R., additional, Tagliamonte, E., additional, Cirillo, T., additional, Silvestri, B., additional, Centonze, G., additional, D'Alessandro, B., additional, Truncellito, L., additional, Mecca, D., additional, Petruzzi, M.A., additional, Coviello, R.O.M., additional, Lopizzo, A., additional, telli, M., additional, Barbuzzi, S., additional, Gubelli, S., additional, Germinario, G., additional, Cosentino, N., additional, Mingrone, A., additional, Vico, R., additional, Borrello, G., additional, Mazza, M.L., additional, Cimino, R., additional, Galasso, D., additional, Cassadonte, F., additional, Talarico, U., additional, Perticone, F., additional, Cassano, S., additional, Catapano, F., additional, Calemme, S., additional, Feraco, E., additional, Cloro, C., additional, Misuraca, G., additional, Caporale, R., additional, Vigna, L., additional, Spagnuolo, V., additional, De Rosa, F., additional, Spadafora, G., additional, Zampaglione, G., additional, Russo, R., additional, Schipani, F.A., additional, Ferragina, A.F., additional, Stranieri, D., additional, Musca, G., additional, Carpino, C., additional, Bencardino, P., additional, Raimondo, F., additional, Musacchio, D., additional, Pulitanò, G., additional, Ruggeri, A., additional, Provenzano, A., additional, Salituri, S., additional, Musolino, M., additional, Calandruccio, S., additional, Marrari, A., additional, Tripodi, E., additional, Scali, R., additional, Anastasio, L., additional, Arone, A., additional, Aragona, P., additional, Donnangelo, L., additional, Comito, M.G.A., additional, Bilotta, F., additional, Vaccaro, I., additional, Rametta, R., additional, Ventura, V., additional, Bonvegna, A., additional, Alì, A., additional, Cinnirella, C., additional, Raineri, M., additional, Pompeo, F., additional, Cascio Ingurgio, N., additional, Carini, V., additional, Coco, R., additional, Giunta, G., additional, Leonardi, G., additional, Randazzo, V., additional, Di Blasi, V., additional, Tamburino, C., additional, Russo, G., additional, Mangiameli, S., additional, Cardillo, R., additional, Castelli, D., additional, Inserra, V., additional, Arena, A., additional, Gulizia, M.M., additional, Raciti, S., additional, Rapisarda, G., additional, Romano, R., additional, Prestifilippo, P., additional, Braschi, G.B., additional, Ledda, G., additional, Terrazzino, R., additional, De Caro, M., additional, Scilabra, G., additional, agnino, B., additional, Grassi, R., additional, Di Tano, G., additional, Scimone, G.F., additional, Vasquez, L., additional, Coppolino, C., additional, Casale, A., additional, Castelli, M., additional, D'Urso, G., additional, D'Antonio, E., additional, Lo Presti, L., additional, Badalamenti, E., additional, Conti, P., additional, Sanfilippo, N., additional, Cirrincione, V., additional, Cinà, M.T., additional, Cusimano, G., additional, Taormina, A., additional, Giuliano, P., additional, Bajardi, A., additional, Mandalà, V., additional, Canonico, A., additional, Geraci, G., additional, Sabella, F.P., additional, Enia, F., additional, Floresta, A.M., additional, Lo Cascio, I., additional, Gumina, D., additional, Cavallaro, A., additional, Piccione, G., additional, Ferrante, R., additional, Blandino, M., additional, Iudicello, M.S., additional, Mossuti, E., additional, Romano, G., additional, Lombardo, L., additional, Monastra, P., additional, Di Vincenzo, D., additional, Porcu, M., additional, Orrù, P., additional, Muscas, F., additional, Giardina, G., additional, Corda, M., additional, Locci, G., additional, Podda, A., additional, Ledda, M., additional, Siddi, P., additional, Lai, C., additional, Pili, G., additional, Mercuro, G., additional, Mureddu, G., additional, Ganau, A., additional, Meloni, G., additional, Poddighe, G., additional, and Sanna, G., additional

Published
2017
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14. Regular Wine Consumption in Chronic Heart Failure: Impact on Outcomes, Quality of Life, and Circulating Biomarkers

Author

Cosmi, Franco, Di Giulio, Paola, Masson, Serge, Finzi, Andrea, Marfisi, Rosa Maria, Cosmi, Deborah, Scarano, Marco, Tognoni, Gianni, Maggioni, Aldo P., Porcu, Maurizio, Boni, Silvana, Cutrupi, Giovanni, Tavazzi, Luigi, Latini, Roberto Tavazzi, L, Tognoni, G, Barlera, S, Franzosi, Mg, Latini, R, Lucci, D, Maggioni, Ap, Marchioli, R, Nicolosi, Gl, Porcu, M, Yusuf, S, Camerini, F, Cohn, Jn, Decarli, A, Pitt, B, Sleight, P, Poole-Wilson, Pa, Geraci, E, Scherillo, M, Fabbri, G, Bartolomei, B, Bertoli, D, Cobelli, F, Fresco, C, Ledda, A, Levantesi, G, Opasich, C, Rusconi, F, Sinagra, G, Turazza, F, Volpi, A, Ceseri, M, Alongi, G, Atzori, A, Bambi, F, Bastarolo, D, Bianchini, F, Cangioli, I, Canu, V, Caporusso, C, Cenni, G, Cintelli, L, Cocchio, M, Confente, A, Fenicia, E, Friso, G, Gianfriddo, M, Grilli, G, Lazzaro, B, Lonardo, G, Luise, A, Nota, R, Orlando, M, Petrolo, R, Pierattini, C, Pierota, V, Provenzani, A, Quartuccio, V, Ragno, A, Serio, C, Spolaor, A, Tafi, A, Tellaroli, E, Ghio, S, Ghizzardi, E, Masson, S, Crociati, L, Rovere, Mt, Corra, U, Di Giulio, P, Finzi, A, Gorini, M, Gonzini, L, Milani, V, Orsini, G, Bianchini, E, Cabiddu, S, Cipressa, L, Cipressa, Ml, Di Bitetto, G, Ferri, B, Galbiati, L, Lorimer, A, Pera, C, Priami, P, Rossi, Mg, Pasotti, E, Vaghi, F, Roncarolo, P, Zunino, Mt, Matta, F, Actis, E, Gaita, F, Azzaro, G, Zanetta, M, Paino, Am, Parravicini, U, Vegis, D, Conte, R, Ferraro, P, De Bernardi, A, Morelloni, S, Fagnani, M, Lucchina, Pg, Montagna, L, Bellone, E, Sappe, D, Ferraro, F, Delucchi, M, Reynaud, Sg, Dore, M, La, A, Massobrio, N, Bo, L, Trinchero, R, Imazio, M, Brocchi, G, Nejrotti, A, Rissone, L, Gabasio, S, Zocchi, C, Randazzo, S, Crenna, A, Giannuzzi, P, Bonanomi, E, Mezzani, A, De Marchi, M, Begliuomini, G, Gianonatti, Ca, Gavazzi, A, Grosu, A, Cas, Ld, Nodari, S, Garyfallidis, P, Bertoletti, A, Bonifazi, C, Arisi, S, Mascaro, F, Fraccarollo, M, Dell, S, Sfolcini, M, Bortolini, F, Raccagni, D, Turelli, A, Santarone, M, Miglierina, E, Sormani, L, Jemoli, R, Tettamanti, F, Pirelli, S, Bianchi, C, Verde, S, Mariani, M, Ziacchi, V, Ferrazza, A, Russo, A, Bortolotti, M, Pasini, Gf, Jones, Kn, Cuzzucrea, D, Gullace, G, Carbone, C, Granata, A, De, S, Del Rosso, G, Inserra, C, Renaldini, E, Zappa, C, Moretti, M, Zanini, R, Ferrari, M, Cei, A, Lissi, C, Dovico, E, Fiorentini, C, Palermo, P, Brusoni, B, Negrini, M, Heyman, J, Danzi, Gb, Frigerio, M, Beretta, L, Sachero, A, Casazza, F, Squadroni, L, Lombardi, F, Marano, L, Margonato, A, Fragasso, G, Febo, Oc, Aiolfi, E, Olmetti, F, Grieco, A, Antonazzo, V, Specchia, G, Mortara, A, Robustelli, F, Songini, Mg, Schweiger, C, Frisinghelli, A, Palvarini, M, Campana, C, Scelsi, L, Marsan, Na, Gualco, A, De Feo, S, Iannone, Ma, Diaco, T, Zaniboni, D, Milanesi, G, Nassiacos, D, Meloni, S, Giani, P, Nicoli, T, Malinverni, C, Gusmini, A, Pozzoni, L, Bisiani, G, Margaroli, P, Schizzarotto, A, Daverio, A, Morelli, E, Occhi, G, Partesana, N, Bandini, P, Rosella, Mg, Giustiniani, S, Cucchi, G, Pedretti, R, Raimondo, R, Vaninetti, R, Fedele, A, Ghezzi, I, Rezzonico, E, Salerno, Ja, Morandi, F, Salvucci, F, Valenti, C, Graziano, G, Romano, M, Cimminiello, C, Mangone, I, Lombardo, M, Quorso, P, Marinoni, G, Breghi, M, Erckert, M, Dienstl, A, Mirante, G, Stefenelli, C, Cioffi, G, Buczkowska, E, Bonanome, A, Bazzanini, F, Parissenti, L, Serafini, C, Catania, G, Tarantini, L, Rigatelli, G, Boni, S, Pasini, A, Masini, E, Zampiero, Aa, Zanchetta, M, Franceschetto, L, Delise, P, Marcon, C, Sacchetta, A, Borgese, L, Artusi, L, Casolino, P, Corbara, F, Banzato, A, Barbiero, M, Aldegheri, Mp, Bazzucco, R, Crivellenti, G, Raviele, A, Zanella, C, Pascotto, P, Sarto, P, Milan, S, Barbieri, E, Girardi, P, Dalla, W, Mule, Jd, Di Sipio ML, Cazzin, R, Milan, D, Zonzin, P, Carraro, M, Rossi, R, Carbonieri, E, Rossi, I, Stritoni, P, Meneghetti, P, Risica, G, Tenderini, Pl, Vassanelli, C, Zanolla, L, Perini, G, Brighetti, G, Chiozza, R, Giuliano, G, Baldin, Mg, Gortan, R, Cesanelli, R, Piazza, R, Mos, L, Vriz, O, Pavan, D, Pascottini, G, Alberti, E, Werren, M, Solinas, L, Longaro, F, Fioretti, P, Albanese, Mc, Miani, D, Gianrossi, R, Pende, A, Rubartelli, P, Magaia, O, Caruso, D, Faraguti, As, Magliani, L, Miccoli, F, Guglielmino, G, Cantarelli, A, Orlandi, S, Vallebona, A, Pozzati, A, Brega, G, Pancaldi, Lg, Vandelli, R, Urbinati, S, Poci, Mg, Zoli, M, Costa, Gm, Guiducci, U, Zobbi, G, Tartagni, F, Tisselli, A, Gentili, A, Pieri, P, Cagnetta, E, Bendinelli, S, Barbieri, A, Conti, R, Ferrari, R, Merlini, F, Fucili, A, Moruzzi, P, Buia, E, Galvani, M, Ferrini, D, Baggioni, G, Yiannacopulu, P, Canè, G, Bonfiglioli, A, Zandomeneghi, R, Brugioni, L, Giannini, A, Di, R, Giuliani, M, Rusconi, L, Del Corso, P, Piovaccari, G, Bologna, F, Venturi, P, Melandri, F, Bagni, E, Bolognese, L, Perticucci, R, Zuppiroli, A, Nannini, M, Consoli, N, Petrone, P, Pipitò, C, Colombi, L, Bernardi, D, Mariani, Pr, Testa, R, Mazzinghi, F, Cosmi, F, Cosmi, D, Zipoli, A, Cecchi, A, Castelli, G, Ciaccheri, M, Mori, F, Pieri, F, Valoti, P, Chiarantini, D, Santoro, Gm, Minneci, C, Marchi, F, Milli, M, Zambaldi, G, Geri, Aa, Cipriani, M, Alessandri, M, Severi, S, Stefanelli, S, Comella, A, Poddighe, R, Digiorgio, A, Carluccio, M, Berti, S, Rizza, A, Bonatti, V, Molendi, V, Brancato, A, D'Aprile, N, Giappichini, G, Del Vecchio, S, Mantini, G, De Tommasi, F, Meucci, G, Cordoni, M, Bechi, S, Barsotti, L, Baldini, P, Romei, M, Scopelliti, G, Lauri, G, Pestelli, F, Furiozzi, F, Cocchieri, M, Severini, D, Patriarchi, F, Chiocchi, P, Buccolieri, M, Martinelli, S, Wee, A, Angelici, F, Bernardinangeli, M, Proietti, G, Biscottini, B, Panciarola, R, Marinacci, L, Perna, Gp, Gabrielli, D, Moraca, A, Moretti, L, Partemi, L, Gregori, G, Amici, R, Patteri, G, Capone, P, Savini, E, Morgagni, Gl, Paccaloni, L, Pezzuoli, F, Carincola, S, Papi, S, De Crescentini, S, Gerardi, P, Midi, P, Gallenzi, E, Pajes, G, Mancone, C, Di, V, Di Gennaro, M, Calcagno, S, Toscano, S, Antonicoli, S, Carta, F, Giorgi, G, Comito, F, Daniele, E, Goretti, Sm, Ciarla, O, Gelfo, Pg, Acquaviva, A, Testa, D, Testa, G, Pagliaro, Fa, Russo, F, Vetta, F, Marchese, I, Di, G, D'Ambrosio, A, Leggio, F, Del Sindaco, D, Lacchè, A, Avallone, A, Risa, Mp, Azzolini, P, Baldo, E, Giovannini, E, Pulignano, G, Tondo, C, Picchio, E, Biffani, E, Tanzi, P, Pozzar, F, Farnetti, F, Azzarito, M, Santini, M, Varveri, A, Ferraiuolo, G, Valtorta, C, Gaspardone, A, Barbato, G, Ceci, V, Aspromonte, N, Bellocci, F, Colizzi, C, Fedele, F, Perez, Fi, Galati, A, Rossetti, A, Mainella, A, Ciuffetta, D, Matteucci, C, Busi, G, De, A, Farina, G, Granatelli, A, Leone, F, Frasca, F, Castellani, G, Massaro, G, Mastrogiuseppe, G, Vacri, A, De Sanctis, F, Cioli, M, Di Luzio, S, Napoletano, C, Piccioni, Ll, De Simone, G, Ottaviano, A, Mazza, V, Spedaliere, C, Staniscia, Td, Calgione, E, De Marco, G, Chiacchio, T, Di, T, Romanzi, S, Salvatore, G, Golino, P, Palermo, A, Mascia, F, Vetrano, A, Vinciguerra, A, Caliendo, L, Longobardi, R, De Caro, G, Di Nola, R, Piemonte, F, Prinzi, D, De Rosa, P, De, V, Riello, F, Capuano, V, Vecchio, G, Landi, M, Amato, S, Garofalo, M, D'Avino, M, Sensale, P, Maiolica, O, Santoro, R, Caso, P, Miceli, D, Maurea, N, Bianchi, U, Crispo, C, Chiariello, M, Filardi, Pp, Russo, L, Capuano, N, Ungaro, G, Vergara, G, Scafuro, F, D'Angelo, G, Campaniello, C, Bottiglieri, P, Volpe, A, Battista, R, De Risi, L, Cardillo, G, Sibilio, G, Marino, Ap, Silvestri, F, Predotti, P, Iervoglini, A, De Matteis, C, Sarnicola, P, Matarazzo, Mm, Baldi, S, Iuliano, V, Astarita, C, Cuccaro, P, Liguori, A, Liguori, G, Gregorio, G, Petraglia, L, Antonelli, G, Amodio, G, De Luca, I, Franchini, G, Lenti, Ml, Cavallari, D, D'Agostino, C, Scalera, G, Altamura, Cm, Russo, M, Mascolo, Ar, Pettinati, G, Ciricugno, Sa, Scrutinio, D, Passantino, A, Mastrangelo, D, Di Masi, A, De, R, Cannone, M, Dibiase, F, Pensato, M, Loliva, F, Trapani, F, Panettieri, I, Leone, L, Di, M, Carrone, M, Gallone, V, Cocco, F, Costantini, M, Tritto, C, Cavalieri, F, Stella, L, Magliari, F, Callerame, M, De Giorgi, A, Pellegrino, L, Correra, M, Portulano, V, Nisi, Gl, Grassi, G, Cristallo, E, De Laura, D, Salerno, C, Fanelli, R, Villella, M, Pede, S, Renna, A, De Lorenzi, E, Urso, L, Lenti, V, Peluso, A, Baldi, N, Polimeni, G, Palma, P, Lauletta, R, Tagliamonte, E, Cirillo, T, Centonze, G, D'Alessandro, B, Truncellito, L, Mecca, D, Petruzzi, Ma, Coviello, Ro, Lopizzo, A, Chiaffitelli, M, Barbuzzi, S, Gubelli, S, Germinario, G, Cosentino, N, Mingrone, A, Vico, R, Borrello, G, Mazza, Ml, Cimino, R, Galasso, D, Cassadonte, F, Talarico, U, Perticone, F, Cassano, S, Catapano, F, Calemme, S, Feraco, E, Cloro, C, Misuraca, G, Caporale, R, Vigna, L, Spagnuolo, V, De Rosa, F, Spadafora, G, Zampaglione, G, Russo, R, Schipani, Fa, Ferragina, Af, Stranieri, D, Musca, G, Carpino, C, Bencardino, P, Raimondo, F, Musacchio, D, Pulitano, G, Ruggeri, A, Provenzano, A, Salituri, S, Musolino, M, Calandruccio, S, Marrari, A, Tripodi, E, Scali, R, Anastasio, L, Arone, A, Aragona, P, Donnangelo, L, Comito, Mg, Bilotta, F, Vaccaro, I, Rametta, R, Ventura, V, Bonvegna, A, Alì, A, Cinnirella, C, Raineri, M, Pompeo, F, Ingurgio, Nc, Carini, V, Coco, R, Giunta, G, Leonardi, G, Randazzo, V, Di Blasi, V, Tamburino, C, Russo, G, Mangiameli, S, Cardillo, R, Castelli, D, Inserra, V, Arena, A, Gulizia, Mm, Raciti, S, Rapisarda, G, Romano, R, Prestifilippo, P, Braschi, Gb, Ledda, G, Terrazzino, R, De Caro, M, Scilabra, G, Graffagnino, B, Grassi, R, Scimone, Gf, Vasquez, L, Coppolino, C, Casale, A, Castelli, M, D'Urso, G, D'Antonio, E, Presti, Ll, Badalamenti, E, Conti, P, Sanfilippo, N, Cirrincione, V, Cinà, Mt, Cusimano, G, Taormina, A, Giuliano, P, Bajardi, A, Mandala, V, Canonico, A, Geraci, G, Sabella, Fp, Enia, F, Floresta, Am, Cascio, Il, Gumina, D, Cavallaro, A, Piccione, G, Ferrante, R, Blandino, M, Iudicello, Ms, Mossuti, E, Romano, G, Lombardo, L, Monastra, P, Di Vincenzo, D, Orru, P, Muscas, F, Giardina, G, Corda, M, Locci, G, Podda, A, Ledda, M, Siddi, P, Lai, C, Pili, G, Mercuro, G, Mureddu, G, Ganau, A, Meloni, G, Poddighe, G, Sanna, G., Cosmi, Franco, Di Giulio, Paola, Masson, Serge, Finzi, Andrea, Marfisi, Rosa Maria, Cosmi, Deborah, Scarano, Marco, Tognoni, Gianni, Maggioni, Aldo P, Porcu, Maurizio, Boni, Silvana, Cutrupi, Giovanni, Tavazzi, Luigi, Latini, Roberto, on behalf of the GISSI-HF, Investigator, Margonato, Alberto, DI GIULIO, Paola, Maggioni, Aldo P., GISSI HF, Investigator, and Sinagra, Gianfranco

Subjects
Male, Health Status, Left, Wine, Comorbidity, Ventricular Function, Left, Health Statu, Quality of life, Risk Factors, Surveys and Questionnaires, Prevalence, Ventricular Function, Surveys and Questionnaire, Depression (differential diagnoses), Depression, Medicine (all), Middle Aged, Prognosis, biological marker, Italy, Female, Risk assessment, Cardiology and Cardiovascular Medicine, biological markers, Human, Cardiac function curve, Vasculitis, medicine.medical_specialty, Vasculiti, Alcohol Drinking, Prognosi, Lower risk, Risk Assessment, Internal medicine, medicine, Humans, Protective Factor, Aged, Heart Failure, business.industry, Risk Factor, Stroke Volume, Biomarker, quality of life, wine, aged, alcohol drinking, biomarkers, chronic disease, comorbidity, depression, female, heart failure, humans, italy, male, middle aged, prevalence, prognosis, protective factors, risk assessment, risk factors, stroke volume, surveys and questionnaires, vasculitis, ventricular function, left, health status, cardiology and cardiovascular medicine, Biomarkers, Chronic Disease, Protective Factors, Quality of Life, medicine.disease, Clinical trial, Heart failure, Physical therapy, business
Abstract

Background— Moderate, regular alcohol consumption is generally associated with a lower risk of cardiovascular events but data in patients with chronic heart failure are scarce. We evaluated the relations between wine consumption, health status, circulating biomarkers, and clinical outcomes in a large Italian population of patients with chronic heart failure enrolled in a multicenter clinical trial. Methods and Results— A brief questionnaire on dietary habits was administered at baseline to 6973 patients enrolled in the Gruppo Italiano per lo Studio della Sopravvivenza nell’Insufficienza Cardiaca-Heart Failure (GISSI-HF) trial. The relations between wine consumption, fatal and nonfatal clinical end points, quality of life, symptoms of depression, and circulating biomarkers of cardiac function and inflammation (in subsets of patients) were evaluated with simple and multivariable-adjusted statistical models. Almost 56% of the patients reported drinking at least 1 glass of wine per day. After adjustment, clinical outcomes were not significantly different in the predefined 4 groups of wine consumption. However, patients with more frequent wine consumption had a significantly better perception of health status (Kansas City Cardiomyopathy Questionnaire score, adjusted P P =0.01), and lower plasma levels of biomarkers of vascular inflammation (osteoprotegerin and C-terminal proendothelin-1, adjusted P P =0.01) after adjusting for possible confounders. Conclusions— We show for the first time in a large cohort of patients with chronic heart failure that moderate wine consumption is associated with a better perceived and objective health status, lower prevalence of depression, and less vascular inflammation, but does not translate into more favorable clinical 4-year outcomes. Clinical Trial Registration— URL: http://www.clinicaltrials.gov . Unique identifier: NCT0033633.

Published
2015

15. Fibre-reinforced sand-coal fly ash-lime-NaCl blends under severe environmental conditions.

Author

Consoli, N. C., Godoy, V. B., Tomasi, L. F., De Paula, T. M., Bortolotto, M. S., and Favretto, F.

Subjects
FREEZE-thaw cycles, MODULUS of rigidity, COAL ash, FLY ash, MIXING, FLIES
Abstract

The use of industrial residues instead of virgin materials is a good alternative for a more sustainable approach to disposing of and managing waste. Soil improvement with coal fly ash (CFA) is particularly attractive for geotechnical earthworks. This study investigated the strength, stiffness and durability of Osorio sand-CFA-lime blends with a variety of improvements by assessing the impact of varying the lime content, fibres, sodium chloride (NaCl) and dry unit weight. Moreover, to contribute to a more rational dosing methodology, strength, stiffness and durability results were correlated to the porosity/binder index [η/(Biv)0.28]. Durability was assessed by comparing wet-dry (WD) and freeze-thaw (FT) cycles, and WD cycles were found to present better performance than FT cycles. Ranks were established for the different components of the blends according to the WD and FT results. The addition of NaCl alone was more effective in improving unconfined compression strength (qu) results than fibres alone. While fibres significantly decreased stiffness at very small-strain shear modulus (G0), NaCl increased G0. The application of η/(Biv)0.28 demonstrated that not only can it predict mechanical behaviour, but also the long-term performance of Osorio sand-CFA-lime blends with or without the addition of NaCl and fibres. [ABSTRACT FROM AUTHOR]

Published
2019
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16. On the strength of fibre reinforced soils

Author

LIRER, STEFANIA, FLORA, ALESSANDRO, Consoli N. C., Lirer, Stefania, Flora, Alessandro, and Consoli, N. C.

Subjects
failure envelope, triaxial testing, micromechanical analysi, fibre reinforcement of soil
Abstract

Fibre reinforced soils have been investigated for several decades and different models have been suggested to estimate their improved shear strength. Micro and macro mechanical characteristics of both fibres and soils affect the shear strength of such composite materials (e.g. relative sizes of fibres and soil grains, fibres aspect ratio, stress state, mechanical properties of the fibres), even though no model is available to explicitly take all of them into account. The aim of this work is to establish a new expression for the shear strength of the reinforced material, able to consider the main characteristics of the soil and the fibres as well as the effect of fibre to grains relative dimensions. Data from triaxial tests carried out on fibre reinforced soils with distinct grain size distributions (from clayey sands to sandy gravels) and from previous experimental works were considered and have been analysed successfully within the proposed framework.

Published
2011

50. Split tensile strength of monofilament polypropylene fiber-reinforced cemented sandy soils.

Author

Consoli, N. C., de Moraes, R. R., and Festugato, L.

Subjects
GEOSYNTHETICS, REINFORCED soils, SOIL mechanics, POLYPROPYLENE fibers, SANDY soils, ROAD foundation, PAVEMENT subgrades
Abstract

The present research aims to quantify the influence of the amount of cement, the porosity, and the voids/cement ratio in assessment of the split tensile strength (qt) of a sandy soil when reinforced and non-reinforced with fibers. A series of split tensile tests were carried out in the present work. The results show that fiber insertion in the cemented soil, for the whole range of cement studied, causes an increase in split tensile strength. The split tensile strength (qt) increased linearly with the amount of cement (C), and a power function fits well as the relation between split tensile strength (qt) and porosity (η) for both the fiber-reinforced and non-reinforced specimens. It was also shown that the voids/cement ratio, in which volumetric cementitious material content is adjusted by an exponent (0.28 for both the fiber-reinforced and non-reinforced cemented soil mixtures) to result in unique correlations for each mixture, is a good parameter in the evaluation of the split tensile strength of the fiber-reinforced and non-reinforced cemented soil studied. This experimental framework will enable a good definition of mechanical parameters used in the design of foundations and subgrades of roads and railways platform (whose system failure mechanisms usually start under tensile stresses at the base of the improved layer) and for their execution quality control. [ABSTRACT FROM AUTHOR]

Published
2011
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