初期高温履歴を受ける高強度コンクリート構造体の自己収縮応力の算定法に関する検討

概要

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Autogenous shrinkage and thermal expansion/contraction due to hydration generate complex stress in high-strength concrete structures at early age. However, there are few investigations on the stress induced by autogenous shrinkage under realistic temperature histories in the structures, or mechanical properties of the young, high-strength concrete for the stress analyses. This paper presents developments of Young's modulus and tensile creep coefficient of the concrete and their prediction models. The autogenous shrinkage stress in concrete specimens under semi-adiabatic conditions were also measured. The stress calculated based on the mechanical properties taking a maturity law into account agrees well with the simulated stress in the structures. These results show the prediction models and the calculation method are very useful for the stress analyses in high-strength concrete structures.
社団法人日本建築学会の論文
2000-11-30