FraMCoS 8 2013 Toledo, Spain

Shear Strength of ASR-Deteriorated RC Members and Shear Reinforcing Effect of Repair by Adding Rebar

This study aims at clarifying the effects of rebar rapture caused by ASR on the mechanical performance of RC members. Rapture of tensile or shear reinforcement was simulated in RC beam specimens, which were subjected to a bending test after…

First page of: Shear Strength of ASR-Deteriorated RC Members and Shear Reinforcing Effect of Repair by Adding Rebar
Year 2013
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Abstract

This study aims at clarifying the effects of rebar rapture caused by ASR on the mechanical performance of RC members. Rapture of tensile or shear reinforcement was simulated in RC beam specimens, which were subjected to a bending test after deteriorated by ASR. Some of the beams were repaired by adding rebars, and the effects of the repair were investigated. The results showed that the ASR increased the shear strength of the beams with less shear reinforcement, and caused a reduction in bond between the tensile rebar and cover concrete. It was also found out that the repair by adding rebar may not necessarily be effective when the integrity of the concrete has been lost due to cracks propagating by the ASR.