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Shear behavior of geopolymer concrete panels under diagonal tensile stresses
Highlights Shear strength of geopolymer panels is 12% higher than cement panels. Drifts capacities for commercial and alternative silicate geopolymer panels are 0.45% and 0.20%. Alternative silicate from rice husk ash reduces 33% the shear drift of cement panels. Geopolymer concrete could be reliable for construction of low-rise shear walls.
Abstract The use of geopolymers has spread over the last 60 years as an alternative to traditional cementitious systems, due to their environmental benefits and mechanical properties for construction. Nowadays, the state-of-the-art on reinforced geopolymer concrete has focused on the micro-scale analysis of the materials, but it has vaguely dabbled into the macro-scale context. This research experimentally assessed the shear behavior of geopolymer concrete panels that may be promising for construction of low-rise and low-cost housing. The parametric testing program included diagonal tension tests of 27 panels built with three different concrete types and three shear reinforcement ratios. The measured response of the specimens is compared in terms of cracking patterns, shear-capacity and drift demands. Overall results indicated that the shear capacity of panels mainly depends on the concrete type, but it is slightly governed by the reinforcement ratios. Furthermore, the program contributes towards developing new provisions for code-based structural design of geopolymer concrete walls as an environmentally friendly construction option.
Shear behavior of geopolymer concrete panels under diagonal tensile stresses
Highlights Shear strength of geopolymer panels is 12% higher than cement panels. Drifts capacities for commercial and alternative silicate geopolymer panels are 0.45% and 0.20%. Alternative silicate from rice husk ash reduces 33% the shear drift of cement panels. Geopolymer concrete could be reliable for construction of low-rise shear walls.
Abstract The use of geopolymers has spread over the last 60 years as an alternative to traditional cementitious systems, due to their environmental benefits and mechanical properties for construction. Nowadays, the state-of-the-art on reinforced geopolymer concrete has focused on the micro-scale analysis of the materials, but it has vaguely dabbled into the macro-scale context. This research experimentally assessed the shear behavior of geopolymer concrete panels that may be promising for construction of low-rise and low-cost housing. The parametric testing program included diagonal tension tests of 27 panels built with three different concrete types and three shear reinforcement ratios. The measured response of the specimens is compared in terms of cracking patterns, shear-capacity and drift demands. Overall results indicated that the shear capacity of panels mainly depends on the concrete type, but it is slightly governed by the reinforcement ratios. Furthermore, the program contributes towards developing new provisions for code-based structural design of geopolymer concrete walls as an environmentally friendly construction option.
Shear behavior of geopolymer concrete panels under diagonal tensile stresses
Cárdenas-Pulido, Jhon (author) / Reyes, Juan C. (author) / Carrillo, Julián (author) / Ramírez, Fernando (author)
Engineering Structures ; 212
2020-03-09
Article (Journal)
Electronic Resource
English
Shear, diagonal tension, and bond stresses in reinforced concrete beams
| Engineering Index Backfile | 1957