Lime-Based Mortar Reinforced by Randomly Oriented Short Fibers for the Retrofitting of the Historical Masonry Structure
Recent seismic events prompted research to develop innovative materials for strengthening and repair of both modern and historic masonry constructions (buildings, bridges, towers) and structural components (walls, arches and vaults, pillars, and columns). Strengthening solutions based on composite m...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-08-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/16/3462 |
| _version_ | 1797560016396353536 |
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| author | Michele Angiolilli Amedeo Gregori Marco Vailati |
| author_facet | Michele Angiolilli Amedeo Gregori Marco Vailati |
| author_sort | Michele Angiolilli |
| collection | DOAJ |
| description | Recent seismic events prompted research to develop innovative materials for strengthening and repair of both modern and historic masonry constructions (buildings, bridges, towers) and structural components (walls, arches and vaults, pillars, and columns). Strengthening solutions based on composite materials, such as the Fiber Reinforced Polymers (FRP) or the Fiber Reinforced Cementitious Matrix (FRCM), have been increasingly considered in the last two decades. Despite reinforcement made of short-fibers being a topic that has been studied for several years from different researchers, it is not yet fully considered for the restoration of the masonry construction. This work aims to experimentally investigate the enhancement of the mechanical properties of lime-based mortar reinforced by introducing short glass fibers in the mortar matrix with several contents and aspect ratios. Beams with dimensions of 160 mm × 40 mm × 40 mm with a central notch were tested in three-point bending configuration aiming to evaluate both the flexural strength and energy fracture of the composite material. Then, the end pieces of the broken beams were tested in Brazilian and compressive tests. All the tests were performed by a hydraulic displacement-controlled testing machine. Results highlight that the new composite material ensures excellent ductility capacity and it can be considered a promising alternative to the classic fiber-reinforcing systems. |
| first_indexed | 2024-03-10T17:53:27Z |
| format | Article |
| id | doaj.art-054bcc30fbdf4987b9d99ba121e54856 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T17:53:27Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-054bcc30fbdf4987b9d99ba121e548562023-11-20T09:15:30ZengMDPI AGMaterials1996-19442020-08-011316346210.3390/ma13163462Lime-Based Mortar Reinforced by Randomly Oriented Short Fibers for the Retrofitting of the Historical Masonry StructureMichele Angiolilli0Amedeo Gregori1Marco Vailati2Department of Civil, Building and Environmental Engineering, University of L’Aquila, 67100 L’Aquila, ItalyDepartment of Civil, Building and Environmental Engineering, University of L’Aquila, 67100 L’Aquila, ItalyDepartment of Civil, Building and Environmental Engineering, University of L’Aquila, 67100 L’Aquila, ItalyRecent seismic events prompted research to develop innovative materials for strengthening and repair of both modern and historic masonry constructions (buildings, bridges, towers) and structural components (walls, arches and vaults, pillars, and columns). Strengthening solutions based on composite materials, such as the Fiber Reinforced Polymers (FRP) or the Fiber Reinforced Cementitious Matrix (FRCM), have been increasingly considered in the last two decades. Despite reinforcement made of short-fibers being a topic that has been studied for several years from different researchers, it is not yet fully considered for the restoration of the masonry construction. This work aims to experimentally investigate the enhancement of the mechanical properties of lime-based mortar reinforced by introducing short glass fibers in the mortar matrix with several contents and aspect ratios. Beams with dimensions of 160 mm × 40 mm × 40 mm with a central notch were tested in three-point bending configuration aiming to evaluate both the flexural strength and energy fracture of the composite material. Then, the end pieces of the broken beams were tested in Brazilian and compressive tests. All the tests were performed by a hydraulic displacement-controlled testing machine. Results highlight that the new composite material ensures excellent ductility capacity and it can be considered a promising alternative to the classic fiber-reinforcing systems.https://www.mdpi.com/1996-1944/13/16/3462cultural heritagedurabilitymechanical characterizationretrofittingstrengtheningquasi-brittle material |
| spellingShingle | Michele Angiolilli Amedeo Gregori Marco Vailati Lime-Based Mortar Reinforced by Randomly Oriented Short Fibers for the Retrofitting of the Historical Masonry Structure Materials cultural heritage durability mechanical characterization retrofitting strengthening quasi-brittle material |
| title | Lime-Based Mortar Reinforced by Randomly Oriented Short Fibers for the Retrofitting of the Historical Masonry Structure |
| title_full | Lime-Based Mortar Reinforced by Randomly Oriented Short Fibers for the Retrofitting of the Historical Masonry Structure |
| title_fullStr | Lime-Based Mortar Reinforced by Randomly Oriented Short Fibers for the Retrofitting of the Historical Masonry Structure |
| title_full_unstemmed | Lime-Based Mortar Reinforced by Randomly Oriented Short Fibers for the Retrofitting of the Historical Masonry Structure |
| title_short | Lime-Based Mortar Reinforced by Randomly Oriented Short Fibers for the Retrofitting of the Historical Masonry Structure |
| title_sort | lime based mortar reinforced by randomly oriented short fibers for the retrofitting of the historical masonry structure |
| topic | cultural heritage durability mechanical characterization retrofitting strengthening quasi-brittle material |
| url | https://www.mdpi.com/1996-1944/13/16/3462 |
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