セメント硬化体の乾燥の程度と乾燥収縮ひずみの関係 : 数式表示

概要

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The relationship between the degree of dryness and the drying shrinkage strain of hardened cement paste with various W/C ratios and ages was expressed mathematically. In this paper it was assumed that the static and the dynamic relationships ( W-S relationship) were same, and the mathematical expression was made in the following procedure; 1)the static relationship between relative humidity and water loss of specimen was expressed mathematically. This relationship was assumed to be dependent on the ratio of free water to evaporable water. 2)the static mathematical expression of the relationship between relative humidity and drying shrinkage strain of specimen was made.lt was assumed that the drying shrinkage strain consisted of the sum of two components occuring in high and low humidity ranges, and this strain corresponded to the combined water content. 3)the relationship between water loss and drying shrinkage strain was derived by eliminating relative humidity from above two relationships. It was found that the calculated values agreed well with experimental data.
社団法人日本建築学会の論文
1994-05-30