11 results on '"Mortar-based composites"'
Search Results
2. Effectiveness of SRG in shear strengthening of deep and slender concrete beams
- Author
-
Liu, Xiangsheng and Thermou, Georgia E.
- Published
- 2025
- Full Text
- View/download PDF
3. Long-Term Durability of Basalt FRCM in Alkaline Environment
- Author
-
Fares, Sara, De Santis, Stefano, Moretti, Giovanni, de Felice, Gianmarco, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Lu, Xinzheng, Series Editor, Milani, Gabriele, editor, and Ghiassi, Bahman, editor
- Published
- 2025
- Full Text
- View/download PDF
4. Saltwater and Alkali Resistance of Steel Reinforced Grout Composites with Stainless Steel
- Author
-
Fares, Sara, Fugger, Rebecca, De Santis, Stefano, de Felice, Gianmarco, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Calabrò, Francesco, editor, Della Spina, Lucia, editor, and Piñeira Mantiñán, María José, editor
- Published
- 2022
- Full Text
- View/download PDF
5. Exploring the thermal behaviour and thermo-mechanical properties of Ferula Communis reinforced plaster and mortar composites: An integrated experimental and numerical approach.
- Author
-
Touil, Mohamed, Rahmoun, Oussama, Iken, Omar, El Harti, Khalid, Saadani, Rachid, and Rahmoune, Miloud
- Subjects
- *
MORTAR , *FERULA , *PLASTER , *THERMOPHYSICAL properties , *CARBON emissions , *CONSTRUCTION materials - Abstract
This research investigated the effect of adding Ferula Communis to building materials. Four ratios of this additive (2, 4, 6, and 8%) were used to replace gypsum in plasterboard and sand in mortar. Based on thermo-physical characterisation, it was observed that increasing the Ferula Communis content in the basic materials improved their thermal properties and lightness. However, despite this promising enhancement, increasing the additive's concentration negatively impacted the composites' mechanical performance. Thus, it was found that incorporating 8% of the aggregate into the plaster and 6% into the mortar decreased their mechanical strength by 44.62% and 91.2% during bending, respectively. Additionally, compression experiments of the mortar matrix showed an approximate reduction of 87.93%. According to these results, 4% aggregate in mortar and 8% aggregate in plaster were selected to be integrated into a bio-based wall, which was numerically simulated using the heat transfer equation. The obtained results prove the wall's thermal ability to reduce the average heating and cooling energy loads by 13 kWh/m 2. year calculated over the four orientations (north, east, south, and west) which is equivalent to 6.47 $ / m 2 of energy savings and 5.64 kgCO 2 eq/m 2. year of avoided C O 2 emissions. • Development of composites with plaster, mortar, and Ferula Communis (FC). • Thermo-mechanical characterisation using the two-box method (EI700) and H10KL test machine. • Microstructure analysis with scanning electron microscopy (SEM). • Analysis of thermal performance of optimal bio-wall using numerical simulations and heat transfer equation. • Evaluation of energy requirements, annual cost savings and avoided CO 2 emissions. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
6. Tensile behaviour of mortar-based composites for externally bonded reinforcement systems.
- Author
-
De Santis, Stefano and de Felice, Gianmarco
- Subjects
- *
REINFORCED concrete , *STRENGTH of materials , *MORTAR , *COMPOSITE materials , *TENSILE strength , *STIFFNESS (Mechanics) - Abstract
Textile reinforcements applied with inorganic matrices are currently receiving great attention for strengthening reinforced concrete and masonry structures, especially when preservation criteria need to be fulfilled for safeguarding cultural heritage. As the development of mortar-based reinforcements is still at an early stage, their mechanical properties need to be investigated and standardized testing methodologies have to be defined. The paper presents an experimental study on the tensile behaviour of strengthening systems comprising two different textiles and five mortar matrices. Various clamping methods and testing setups have been experimented and their effect on the results is discussed. Monotonic and cyclic tests have been carried out to derive strength and stiffness, crack pattern, failure mode, and response stages under tension, which have been related to the mechanical properties and the layout of the matrix and the textile. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
7. Mortar-based systems for externally bonded strengthening of masonry.
- Author
-
de Felice, Gianmarco, De Santis, Stefano, Garmendia, Leire, Ghiassi, Bahman, Larrinaga, Pello, Lourenço, Paulo, Oliveira, Daniel, Paolacci, Fabrizio, and Papanicolaou, Catherine
- Abstract
Mortar-based composite materials appear particularly promising for use as externally bonded reinforcement (EBR) systems for masonry structures. Nevertheless, their mechanical performance, which may significantly differ from that of Fibre Reinforced Polymers, is still far from being fully investigated. Furthermore, standardized and reliable testing procedures have not been defined yet. The present paper provides an insight on experimental-related issues arising from campaigns on mortar-based EBRs carried out by laboratories in Italy, Portugal and Spain. The performance of three reinforcement systems made out of steel, carbon and basalt textiles embedded in inorganic matrices has been investigated by means of uniaxial tensile coupon testing and bond tests on brick and stone substrates. The experimental results contribute to the existing knowledge regarding the structural behaviour of mortar-based EBRs against tension and shear bond stress, and to the development of reliable test procedures aiming at their homogenization/standardization. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
8. Rocking response assessment of in-plane laterally-loaded masonry walls with openings.
- Author
-
Parisi, Fulvio, Lignola, Gian Piero, Augenti, Nicola, Prota, Andrea, and Manfredi, Gaetano
- Subjects
- *
MECHANICAL loads , *MASONRY , *FINITE element method , *COMPARATIVE studies , *EXPERIMENTAL design , *ROTATIONAL motion - Abstract
Highlights: [•] Rocking behaviour of a masonry wall with opening is investigated by FE analysis. [•] Low response sensitivity to fracture energies is shown. [•] The relationship between rocking rotations of the spandrel and piers is analysed. [•] Several pier effective heights, spandrel lengths and reduction factors are tested. [•] Analytical drifts of equivalent frame models are compared to experimental drifts. [Copyright &y& Elsevier]
- Published
- 2013
- Full Text
- View/download PDF
9. Low-impact techniques for seismic strengthening fair faced masonry walls
- Author
-
Omar AlShawa, Marialuigia Sangirardi, Stefano De Santis, Luigi Sorrentino, Ivan Roselli, Domenico Liberatore, Gianmarco de Felice, Francesca Gobbin, De Santis, S., Alshawa, O., de Felice, G., Gobbin, F., Roselli, I., Sangirardi, M., Sorrentino, L., Liberatore, D., DE SANTIS, Stefano, Alshawa, Omar, DE FELICE, Gianmarco, Gobbin, Francesca, Roselli, Ivan, Sangirardi, Marialuigia, Sorrentino, Luigi, and Liberatore, Domenico
- Subjects
Natural accelerogram ,Shake table tests ,Mortar-based composite ,Mortar-based composites ,Architectural heritage ,Carbon fibre reinforced polymer (CFRP) ,Rubble masonry ,General Materials Science ,Geotechnical engineering ,Composite reinforced mortar (CRM) ,Civil and Structural Engineering ,Mortar joint repointing ,Natural stone ,business.industry ,Building and Construction ,Composite connector ,Masonry ,Stainless-steel ,Debris ,2016–2017 Central Italy earthquakes ,3DVision ,Composite connectors ,2016–2017 Central Italy earthquake ,Earthquake shaking table ,Mortar ,Wall thickness ,business ,Shake table test ,Geology - Abstract
Two techniques for the seismic strengthening of fair faced rubble masonry walls are proposed and tested on a shake table. The first solution entails the use of carbon fibre reinforced polymer connectors installed from outside through the natural stone units, without perforating the entire wall thickness, thus leaving the internal wall surface undisturbed. In the second solution, stainless-steel cords are embedded in repointed mortar joints of the fair face and connected, by means of stainless-steel bars, to a thermo-insulating composite reinforced mortar applied to the internal side. Shake table tests were performed under natural accelerograms on real scale multi-leaf rubble masonry walls, built with the stone units retrieved from the debris of a hamlet heavily damaged in the 2016 Central Italy earthquakes. Both strengthening solutions proved effective in enhancing the seismic capacity by preventing leaf separation and masonry disintegration, and in limiting damage development under earthquake excitation. Thanks to the compatibility with original materials and the preservation of the fair face, they are suitable for mitigating the seismic vulnerability of architectural heritage.
- Published
- 2021
- Full Text
- View/download PDF
10. Shake table tests on a tuff masonry structure strengthened with composite reinforced mortar.
- Author
-
De Santis, Stefano and de Felice, Gianmarco
- Subjects
- *
SHAKING table tests , *MORTAR , *MASONRY testing , *COMPOSITE structures , *EARTHQUAKE hazard analysis , *FAILURE mode & effects analysis , *HORIZONTAL wells , *APPROPRIATE technology - Abstract
• Shake table tests were performed on a real-scale structure strengthened with CRM. • Strengthening was designed based on structural features and damage state. • Acceleration and displacement capacity were significantly enhanced. • Strengthening was applied to the outer wall surface to minimize inconvenience on occupants. • CRM requires fast installation, includes durable materials and is 30 mm thick. The seismic vulnerability of unreinforced masonry structures threatens the life and health of people and the conservation of the built heritage in earthquake prone areas, highlighting the need of gaining a deeper understanding of their dynamic behaviour and of developing appropriate strengthening technologies. This work investigates the effectiveness of a low-impact technology consisting of composite reinforced mortar (CRM) applied to the outer surface of masonry walls for enhancing their seismic capacity, without the need to evacuate the building. Shake table tests were performed under natural accelerograms (applied in horizontal and vertical directions) on a real-scale structure, built with tuff blocks and consisting of a façade with a window, two side walls (one of which with a door near the corner) and an inclined timber roof. The mock-up was tested unstrengthened, then repaired and strengthened by applying a glass fibre reinforced polymer mesh embedded in a lime-based plaster to the outer surface of damaged walls. The experimental investigation showed the effects of CRM on damage accumulation, failure mode and on the increase of base acceleration and displacement capacities. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
11. Mortar-based systems for externally bonded strengthening of masonry
- Author
-
Fabrizio Paolacci, Daniel V. Oliveira, Stefano De Santis, Bahman Ghiassi, Pello Larrinaga, Gianmarco de Felice, Leire Garmendia, Catherine G. Papanicolaou, Paulo B. Lourenço, DE FELICE, Gianmarco, DE SANTIS, Stefano, Garmendia, L, Ghiassi, B, Larrinaga, P, Lourenço, Pb, Oliveira, Dv, Paolacci, Fabrizio, Papanicolaou, Cg, and Universidade do Minho
- Subjects
Bond tests ,Materials science ,0211 other engineering and technologies ,Uniaxial tension ,02 engineering and technology ,Tensile tests ,Mortar-based composites ,Homogenization (chemistry) ,Mortar-based composite ,Engenharia e Tecnologia::Engenharia Civil ,021105 building & construction ,General Materials Science ,Composite material ,Reinforcement ,Masonry ,Civil and Structural Engineering ,Science & Technology ,business.industry ,Bond ,Building and Construction ,Structural engineering ,021001 nanoscience & nanotechnology ,Shear bond ,Mechanics of Materials ,Solid mechanics ,Engenharia Civil [Engenharia e Tecnologia] ,Mortar ,0210 nano-technology ,business - Abstract
Mortar-based composite materials appear particularly promising for use as externally bonded reinforcement (EBR) systems for masonry structures. Nevertheless, their mechanical performance, which may significantly differ from that of Fibre Reinforced Polymers, is still far from being fully investigated. Furthermore, standardized and reliable testing procedures have not been defined yet. The present paper provides an insight on experimental-related issues arising from campaigns on mortar-based EBRs carried out by laboratories in Italy, Portugal and Spain. The performance of three reinforcement systems made out of steel, carbon and basalt textiles embedded in inorganic matrices has been investigated by means of uniaxial tensile coupon testing and bond tests on brick and stone substrates. The experimental results contribute to the existing knowledge regarding the structural behaviour of mortar-based EBRs against tension and shear bond stress, and to the development of reliable test procedures aiming at their homogenization/standardization.
- Published
- 2014
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.