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81 results on '"Cambi, Costanza"'

5. Water-table and discharge changes associated with the 2016–2017 seismic sequence in central Italy: hydrogeological data and a conceptual model for fractured carbonate aquifers

Author

Petitta, Marco, Mastrorillo, Lucia, Preziosi, Elisabetta, Banzato, Francesca, Barberio, Marino Domenico, Billi, Andrea, Cambi, Costanza, De Luca, Gaetano, Di Carlo, Giuseppe, Di Curzio, Diego, Di Salvo, Cristina, Nanni, Torquato, Palpacelli, Stefano, Rusi, Sergio, Saroli, Michele, Tallini, Marco, Tazioli, Alberto, Valigi, Daniela, Vivalda, Paola, and Doglioni, Carlo

Published
2018
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8. Recycling biomass ashes on the road pavements: a multimethod approach

Author

PANDOLFI BALBI, Elia, Cambi, Costanza, Montanari, Cristina, Fastelli, Maximiliano, Cerni, Gianluca, Corradini, Alessandro, Cotana, Franco, Corrado, Bocci, and Comodi, Paola

Subjects
biomass ashes, clay, lime, reuse, stabilization, mineralogical analyses, mineralogical analyses, clay, lime, biomass ashes, reuse, stabilization
Published
2023

11. Use of Biomass Ash in Reinforced Clayey Soil: A Multiscale Analysis of Solid-State Reactions.

Author

Fastelli, Maximiliano, Cambi, Costanza, Zucchini, Azzurra, Sassi, Paola, Pandolfi Balbi, Elia, Pioppi, Leonardo, Cotana, Franco, Cavalaglio, Gianluca, and Comodi, Paola

Subjects
REINFORCED soils, SOIL testing, FOURIER transform infrared spectroscopy, X-ray powder diffraction, POZZOLANIC reaction, DISSOLUTION (Chemistry), INCINERATION, CLAY soils
Abstract

Clayey soils are treated with binding agents to improve their mechanical properties, as these soils are widely used in construction. The production of binding agents is an energy-intensive process and emits significant amounts of CO2. In addition, the interest in recycling industry waste materials has increased, and the management of significant waste from biomass power plants remains an issue. We used three biomass ashes derived from pellet, olive, and grapevine combustion as stabilizing agents of a clayey soil. The mechanical effects of the treatment on clay-ash mixtures were evaluated using confined compressive tests. The mixtures' chemo-mineralogical evolution was evaluated through X-ray powder diffraction and quantitative Rietveld analysis, Fourier transform infrared spectroscopy (FT-IR), and energy-dispersive X-ray spectroscopy coupled with scanning electron microscopy (EDS-SEM). The FT-IR spectra showed an evolution of the Si-O-Si/Al features, with shifting band positions due to polymerization of the tetrahedral units. The EDS-SEM analysis showed an evolution of the Ca/Si distribution and the growth of pozzolanic reaction products, such as C-S-H nanocrystals and gels. This evidence confirms that the pozzolanic reaction occurs by dissolution of clay minerals and/or the amorphous phase of the ash, which affects the macroscopic behavior of clayey soils in terms of stiffening and strengthening, as confirmed by mechanical tests, albeit these effects are non-homogenous and continuous. [ABSTRACT FROM AUTHOR]

Published
2023
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12. Use of biomass ashes for the treatment of expansive clayey soils

Author

Comodi, Paola, Cambi, Costanza, Fastelli, Maximiliano, Elia Pandolfi Balbi, Sassi, Paola, Pioppi, Leonardo, Zucchini, Azzurra, Gianluca, Cavalaglio, and Cotana, Franco

Subjects
chemo-mineralogical evolution, mechanical behavior, Biomass fly ash, clayey soil, Biomass fly ash, chemo-mineralogical evolution, clayey soil, mechanical behavior
Published
2022

18. Preliminary results on the response of some springs of the Sibillini Mountains area to the 2016-2017 seismic sequence

Author

Fronzi, Davide, primary, Banzato, Francesca, additional, Caliro, Stefano, additional, Cambi, Costanza, additional, Cardellini, Carlo, additional, Checcucci, Roberto, additional, Mastrorillo, Lucia, additional, Mirabella, Francesco, additional, Petitta, Marco, additional, Valigi, Daniela, additional, and Tazioli, Alberto, additional

Published
2020
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21. Gestione delle variazioni dell’assetto idrogeologico indotte dalla sequenza sismica del 2016 nell’area nursina e dei Monti Sibillini

Author

Valigi, Daniela, Francesca, Banzato, Beddini, Giulio, Cambi, Costanza, Cardellini, Carlo, Roberto, Checcucci, DE GIORGI, Francesco, Mirabella, Francesco, Barbara, Toccaceli, and Marco, Stelluti

Subjects
sorgenti intermittenti, risorse idriche, emergenza idrica, Eventi sismici, sorgenti intermittenti, risorse idriche, emergenza idrica, Eventi sismici
Published
2019

23. Modification of groundwater circulation induced by the Central Italy earthquakes: the case of Torbidone system (Norcia Plain, Italy)

Author

Valigi, Daniela, Cambi, Costanza, Cardellini, Carlo, Mirabella, Francesco, Mastrorillo, Lucia, Davide, Renghi, Stefano, Viaroli, Beddini, Giulio, and Stefano, Caliro

Subjects
earthquake, 2016-17, central Italy, earthquake, Apennines, geochemical groundwater monitoring, central Italy, Apennines, earthquake, 2016-17, geochemical groundwater monitoring
Published
2018

24. Promoting innovation in Geoscience education: the experience of Geology Courses of the University of Perugia

Author

Perugini, Diego, Cambi, Costanza, Baldanza, Angela, Barchi, M. R., Bertinelli, Angela, Burla, Maria Cristina, Cannata, Andrea, Capezzuoli, Enrico, Cardellini, Carlo, Cencetti, Corrado, Cherin, Marco, Cirilli, Simonetta, Comodi, Paola, DI MATTEO, Lucio, Ercoli, Maurizio, Frondini, Francesco, Margaritelli, Giulia, Melelli, Laura, Minelli, Giorgio, Mirabella, Francesco, Monaco, Paolo, Morgavi, Daniele, Nazzareni, Sabrina, Pauselli, Cristina, Petrelli, Maurizio, Porreca, Massimiliano, Rettori, Roberto, Spina, Amalia, Valigi, Daniela, Vetere, F. P., Zucchini, Azzurra, Petrillo, Caterina, Perugini, Diego, Cambi, Costanza, Baldanza, Angela, Barchi, M. R., Bertinelli, Angela, Burla, Maria Cristina, Cannata, Andrea, Capezzuoli, Enrico, Cardellini, Carlo, Cencetti, Corrado, Cherin, Marco, Cirilli, Simonetta, Comodi, Paola, DI MATTEO, Lucio, Ercoli, Maurizio, Frondini, Francesco, Margaritelli, Giulia, Melelli, Laura, Minelli, Giorgio, Mirabella, Francesco, Monaco, Paolo, Morgavi, Daniele, Nazzareni, Sabrina, Pauselli, Cristina, Petrelli, Maurizio, Porreca, Massimiliano, Rettori, Roberto, Spina, Amalia, Valigi, Daniela, Vetere, F. P., Zucchini, Azzurra, and Petrillo, Caterina

Published
2016

25. Discharge variations of springs induced by strong earthquakes: the case of the mw 6.5 Norcia event (Italy, October 30 th 2016)

Author

Valigi, Daniela, Cambi, Costanza, Mastrorillo, Lucia, Barchi, Massimiliano Rinaldo, Cardellini, Carlo, Checcucci, Roberto, Di Matteo, Lucio, Frondini, Francesco, Mirabella, Francesco, Viaroli, Stefano, and Vispi, Isotta

Abstract

Earthquakes, dynamic strain, groundwater circulation, structural permeability., Flowpath 2017, National meeting on hydrogeology 2017

Published
2017
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31. Reliability of water content estimation by profile probe and its effect on slope stability.

Author

Di Matteo, Lucio, Pauselli, Cristina, Valigi, Daniela, Ercoli, Maurizio, Rossi, Mauro, Guerra, Giacomo, Cambi, Costanza, Ricco, Remo, and Vinti, Giuseppe

Subjects
SLOPE stability, LANDSLIDES, DIELECTRIC devices, SOIL classification, ESTIMATION theory
Abstract

Shallow landslide failures are distributed worldwide and cause economic losses and fatalities. A proper evaluation of the possible occurrence of shallow landslides requires reliable characterization of water content. Volumetric water content (θ) is commonly estimated using dielectric sensors, which use manufacturers' calibration curves developed for specific soil types. In this study, we present the experimental results achieved during a laboratory calibration of a capacitance probe (PR2/6 probe), tested on two sandy soils widely outcropping in Central Italy. The proposed equations demonstrate a more reliable estimation of θ with respect to the generalized soil equation provided by the manufacturer, which overestimates θ by up to 10 percentage points. Such overestimation could affect the evaluation of suction stress in partially saturated shallow soils affecting the slope stability analysis. Although the use of θ from correct calibration equations provides less precautionary factor of safety values, a reliable evaluation of the soil moisture condition is fundamental when mapping and predicting the spatial and temporal occurrence of shallow landslides. The use of the PR2/6 probe with the appropriate soil calibration equations in early warning monitoring systems will provide a more reliable forecast, minimizing the number of false alarms. [ABSTRACT FROM AUTHOR]

Published
2018
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