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Alkali-silica reaction (ASR) is one of the expansion phenomena on concrete. Most of the actual inspection site, even if cracks due to ASR are confirmed, it is difficult to judge the degree of deterior...ation quantitatively. That is because the reference length before the expansion based on the ASR expansion rate is not usually measured in the actual structure. This study focuses on the quantitative evaluation of damaged state on actual ASR damaged concrete structures. In order to clarify ASR deterioration degree of actual structure, comparative investigation of concrete properties were conducted: core specimens collected from actual structure and ASR induced specimens in the laboratory test. This investigation worked out with focusing several parameters such as compressive strength, Young's modulus, internal crack density, and crack width. As a result, a relationship was found between ASR expansion and the residual Young's modulus until ASR expansion reaches 1000μ. Thus, the possibility to presume the expansion ratio due to ASR in the actual structure approximately even if there is no information of the reference length was suggested.続きを見る
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Mendeley出力
