調合設計および実環境条件を考慮した高強度コンクリートのひび割れポテンシャル評価に関する研究

概要

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High-strength concrete using various types of cement, considering mix design and real environmental conditions, was studied on the cracking potential. As a result, behavior of autogenous shrinkage in portland cement concrete showed a change from shrinkage to expansion at the temperature peak under temperature-history cure, but it remained in shrinkage in the blast furnace slag cement concrete. The cracking potential in concrete subject to temperature-history cure was higher than that in concrete under other conventional cure, and stress strength ratio was independent of cure condition. An estimation method for the age of cracking was shown by evaluating strain of reinforcing bar on tensile loading.
社団法人日本建築学会の論文
2008-01-30