PVA-ECCのひび割れ面でのせん断伝達機構と部材のせん断耐力評価

概要

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In this research, PVA-ECC (Engineered Cementitious Composites with Polyvinyl alcohol fiber), which is one of the composites showing pseudostrain hardening behavior in uniaxial tension, is focused. Method of single plane shear test under tensile stress as normal stress on crack surface is conducted to clarify shear transfer mechanism on crack surface. From the test results, tensile shear strength on crack surface is about half of uniaxial tensile strength. This means that normal stress for crack surface is possible to keep tensile strength under shear. Predicting method for shear strength of beams is proposed based on multiplying the reduction coefficient for tensile strength obtained from evaluation of tensile properties using bending test. The reduction coefficient derived from beam test results is 0.41.
社団法人日本建築学会の論文
2007-09-30