セメント硬化体の乾燥の程度と乾燥収縮ひずみの関係 : 乾燥条件の影響

概要

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Dynamic drying shrinkage strain-weight loss curves of thin cement paste specimen (4×40×150mm) with various curing times (3, 7, 28 and 104 days) were obtained under the drying condition of 0, 20, 45, 58 and 79 % RH, respectively. These results showed that there was a unique relationship between drying shrinkage strain and water loss, regardless of the age at the start of drying. Water loss and drying shrinkage strain vs. relative humidity were obtained for curing times of 3, 7, 28 and 56 days. It was shown that water loss vs. relative humidity curves was deoendent on the amount of hydration products (degree of hydration). Drying shrinkage strain vs. relative humidity curves were also influenced by degree of hydration. Ultimate drying shrinkage strain was nearly proportional to the amount of hydration products which were the source of drying shrinkage.
社団法人日本建築学会の論文
1992-09-30