超高強度コンクリート実大柱の自己収縮応力に及ぼす水和熱の影響

概要

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This paper deals with autogenouse shrinkage stress of reinforced ultra high-strength concrete column. Two full scale reinforced concrete columns were constructed ; one was constructed in summer and the other was constructed in winter. The influence of heat of hydration on the autogenouse shrinkage stresses of these columns was investigated experimentally. In addition, Young's modulus and creep of concrete at early ages were tested. As the result, the magnitude of autogenouse shrinkage stress in summer was higher than that in winter. On the other hands, Young's modulus of concrete in summer developed more rapidly than that in winter. It was found that heat of hydration strongly affected the autogenouse shrinkage stress of concrete. Based on the Young's modulus and creep of concrete at early ages, a step-by-step method could predict the autogenouse shrinkage stresses of these columns.
社団法人日本建築学会の論文
1998-01-30