A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Out-of-plane flexural behavior of autoclaved aerated concrete block masonry walls strengthened with high-ductility concrete
https://orcid.org/0000-0003-4500-2977
Highlights The out-of-plane behavior of AAC masonry walls strengthened with HDC and TR-HDC was studied. Influences of various variables on the failure mode, bearing capacity, and deformability were analyzed. The HDC systems can be used to improve the out-of-plane deformation ability and collapse resistance of AAC masonry walls. The formulas were proposed to estimate the out-of-plane bearing capacity of the AAC masonry walls.
Abstract Masonry walls are susceptible to out-of-plane failures during seismic events. Therefore, this study investigated the out-of-plane flexural behavior of autoclaved aerated concrete (AAC) blocks masonry walls, strengthened with high-ductility concrete (HDC) and HDC with built-in textile grid (TR-HDC), to improve the flexural behavior of AAC block masonry walls. Nine groups of specimens, one group of reference walls, four groups of HDC-based strengthened walls, three groups of TR-HDC-based retrofitted walls, and one group of mortar-based retrofitted walls were built and tested using four-point loadings. The experimental parameters included the thickness of the strengthening layer, retrofitting configuration, shear-to-span ratio, and reinforcing textile ratio. The effects of these parameters on the failure mode, bearing capacity, deformability, and strength index were discussed based on four-point bending test results. The results demonstrated that the HDC and TR-HDC overlays improved the failure mode of the specimens from brittle to ductile fracture and increased their bearing capacity, ductility, and absorbed energy. The loading capacity of the strengthened walls further improved with an increase in the strengthening layer thickness and reinforcing textile ratio. Finally, based on the failure mode of the strengthened specimens, equations for estimating their out-of-plane bending and shear capacities were proposed.
Out-of-plane flexural behavior of autoclaved aerated concrete block masonry walls strengthened with high-ductility concrete
https://orcid.org/0000-0003-4500-2977
Highlights The out-of-plane behavior of AAC masonry walls strengthened with HDC and TR-HDC was studied. Influences of various variables on the failure mode, bearing capacity, and deformability were analyzed. The HDC systems can be used to improve the out-of-plane deformation ability and collapse resistance of AAC masonry walls. The formulas were proposed to estimate the out-of-plane bearing capacity of the AAC masonry walls.
Abstract Masonry walls are susceptible to out-of-plane failures during seismic events. Therefore, this study investigated the out-of-plane flexural behavior of autoclaved aerated concrete (AAC) blocks masonry walls, strengthened with high-ductility concrete (HDC) and HDC with built-in textile grid (TR-HDC), to improve the flexural behavior of AAC block masonry walls. Nine groups of specimens, one group of reference walls, four groups of HDC-based strengthened walls, three groups of TR-HDC-based retrofitted walls, and one group of mortar-based retrofitted walls were built and tested using four-point loadings. The experimental parameters included the thickness of the strengthening layer, retrofitting configuration, shear-to-span ratio, and reinforcing textile ratio. The effects of these parameters on the failure mode, bearing capacity, deformability, and strength index were discussed based on four-point bending test results. The results demonstrated that the HDC and TR-HDC overlays improved the failure mode of the specimens from brittle to ductile fracture and increased their bearing capacity, ductility, and absorbed energy. The loading capacity of the strengthened walls further improved with an increase in the strengthening layer thickness and reinforcing textile ratio. Finally, based on the failure mode of the strengthened specimens, equations for estimating their out-of-plane bending and shear capacities were proposed.
Out-of-plane flexural behavior of autoclaved aerated concrete block masonry walls strengthened with high-ductility concrete
https://orcid.org/0000-0003-4500-2977
Highlights The out-of-plane behavior of AAC masonry walls strengthened with HDC and TR-HDC was studied. Influences of various variables on the failure mode, bearing capacity, and deformability were analyzed. The HDC systems can be used to improve the out-of-plane deformation ability and collapse resistance of AAC masonry walls. The formulas were proposed to estimate the out-of-plane bearing capacity of the AAC masonry walls.
Abstract Masonry walls are susceptible to out-of-plane failures during seismic events. Therefore, this study investigated the out-of-plane flexural behavior of autoclaved aerated concrete (AAC) blocks masonry walls, strengthened with high-ductility concrete (HDC) and HDC with built-in textile grid (TR-HDC), to improve the flexural behavior of AAC block masonry walls. Nine groups of specimens, one group of reference walls, four groups of HDC-based strengthened walls, three groups of TR-HDC-based retrofitted walls, and one group of mortar-based retrofitted walls were built and tested using four-point loadings. The experimental parameters included the thickness of the strengthening layer, retrofitting configuration, shear-to-span ratio, and reinforcing textile ratio. The effects of these parameters on the failure mode, bearing capacity, deformability, and strength index were discussed based on four-point bending test results. The results demonstrated that the HDC and TR-HDC overlays improved the failure mode of the specimens from brittle to ductile fracture and increased their bearing capacity, ductility, and absorbed energy. The loading capacity of the strengthened walls further improved with an increase in the strengthening layer thickness and reinforcing textile ratio. Finally, based on the failure mode of the strengthened specimens, equations for estimating their out-of-plane bending and shear capacities were proposed.
Out-of-plane flexural behavior of autoclaved aerated concrete block masonry walls strengthened with high-ductility concrete
Qiu, Zhengtao (author) / Deng, Mingke (author) / Zhang, Wei (author) / Wu, Zhiyan (author) / Dong, Zhifang (author) / Li, Tong (author)
2023-06-09
Article (Journal)
Electronic Resource
English
PERFORMANCE OF AUTOCLAVED AERATED-CONCRETE MASONRY WALLS IN KUWAIT
| Online Contents | 1996
Performance of Autoclaved Aerated-Concrete Masonry Walls in Kuwait
| British Library Online Contents | 1996
Performance of autoclaved aerated-concrete masonry walls in Kuwait
| Online Contents | 1996