擬似完全拘束下における高強度コンクリートの自己収縮によるひび割れポテンシャル評価に関する研究

概要

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In order to evaluate the effect of autogeneous shrinkage and tensile creep property on stress of concrete under quasi-complete restraint condition as well as cracking behavior, Variable Restraint Testing Machine (VRTM) was developed. Using this machine, cracking potential of variable high-strength concrete in early ages were evaluated. According to those experiments, following results were obtained: (1)Tensile strength of concrete was higher than splitting tensile strength, while concrete under small stress/strength ratio. (2)Tensile strength of concrete under restrained condition was changed according to the amount of tensile creep strain. Larger amount of tensile creep strain reduced the tensile strength.
社団法人日本建築学会の論文
2007-12-30