A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence of Alkali-Silica reaction (ASR) on aggregate interlock and shear-friction behavior of reinforced concrete members
https://orcid.org/0000-0001-7091-8376
Highlights The influence of ASR on aggregate interlock was investigated with push-off tests. ASR was not found to reduce aggregate interlock of affected concrete. Aggregate interlock of ASR concrete relies on the stresses at a crack and its width. Vecchio and Collins’ model can predict aggregate interlock of ASR concrete.
Abstract Alkali-silica reaction (ASR) is one of the most damaging mechanisms affecting concrete structures worldwide. ASR effects on the durability and serviceability of damaged concrete are widely known and fairly well understood. However, the structural implications are still unclear, and a number of contradictory data are found in the literature, especially regarding shear behavior. The influence of ASR distressed reinforced concrete on aggregate interlock is presented in this paper. Push-off specimens having different transverse reinforcement ratios were fabricated with ASR reactive coarse aggregates. The specimens were monitored over time and displayed different levels of expansion. Results indicated that ASR-induced expansion and damage were affected by the transverse reinforcement ratio. However, little to no aggregate interlock reduction was observed on ASR-affected specimens up to moderate expansion levels (about 0.12%). It was found that there were two controlling and competing mechanisms that affected aggregate interlock for ASR-affected specimens: the beneficial effects of chemical prestressing and the detrimental ASR-induced damage.
Influence of Alkali-Silica reaction (ASR) on aggregate interlock and shear-friction behavior of reinforced concrete members
https://orcid.org/0000-0001-7091-8376
Highlights The influence of ASR on aggregate interlock was investigated with push-off tests. ASR was not found to reduce aggregate interlock of affected concrete. Aggregate interlock of ASR concrete relies on the stresses at a crack and its width. Vecchio and Collins’ model can predict aggregate interlock of ASR concrete.
Abstract Alkali-silica reaction (ASR) is one of the most damaging mechanisms affecting concrete structures worldwide. ASR effects on the durability and serviceability of damaged concrete are widely known and fairly well understood. However, the structural implications are still unclear, and a number of contradictory data are found in the literature, especially regarding shear behavior. The influence of ASR distressed reinforced concrete on aggregate interlock is presented in this paper. Push-off specimens having different transverse reinforcement ratios were fabricated with ASR reactive coarse aggregates. The specimens were monitored over time and displayed different levels of expansion. Results indicated that ASR-induced expansion and damage were affected by the transverse reinforcement ratio. However, little to no aggregate interlock reduction was observed on ASR-affected specimens up to moderate expansion levels (about 0.12%). It was found that there were two controlling and competing mechanisms that affected aggregate interlock for ASR-affected specimens: the beneficial effects of chemical prestressing and the detrimental ASR-induced damage.
Influence of Alkali-Silica reaction (ASR) on aggregate interlock and shear-friction behavior of reinforced concrete members
https://orcid.org/0000-0001-7091-8376
Highlights The influence of ASR on aggregate interlock was investigated with push-off tests. ASR was not found to reduce aggregate interlock of affected concrete. Aggregate interlock of ASR concrete relies on the stresses at a crack and its width. Vecchio and Collins’ model can predict aggregate interlock of ASR concrete.
Abstract Alkali-silica reaction (ASR) is one of the most damaging mechanisms affecting concrete structures worldwide. ASR effects on the durability and serviceability of damaged concrete are widely known and fairly well understood. However, the structural implications are still unclear, and a number of contradictory data are found in the literature, especially regarding shear behavior. The influence of ASR distressed reinforced concrete on aggregate interlock is presented in this paper. Push-off specimens having different transverse reinforcement ratios were fabricated with ASR reactive coarse aggregates. The specimens were monitored over time and displayed different levels of expansion. Results indicated that ASR-induced expansion and damage were affected by the transverse reinforcement ratio. However, little to no aggregate interlock reduction was observed on ASR-affected specimens up to moderate expansion levels (about 0.12%). It was found that there were two controlling and competing mechanisms that affected aggregate interlock for ASR-affected specimens: the beneficial effects of chemical prestressing and the detrimental ASR-induced damage.
Influence of Alkali-Silica reaction (ASR) on aggregate interlock and shear-friction behavior of reinforced concrete members
Fiset, M. (author) / Sanchez, L.F.M. (author) / Bilodeau, S. (author) / Mitchell, D. (author) / Bastien, J. (author)
Engineering Structures ; 233
2021-01-07
Article (Journal)
Electronic Resource
English
Aggregate Interlock and Shear Friction Behaviour of ASR Affected Concrete
| Springer Verlag | 2024
The shear friction aggregate interlock resistance across sliding planes in concrete
| Online Contents | 2010
Alkali-aggregate (silica) reaction in concrete
| TIBKAT | 1978