Abstract
The present study aimed at evaluating autogenous and drying shrinkage of high strength concrete quantitatively. For this purpose, bound water content of concrete sealed as well as exposed to drying at different ages was measured and the relationship between autogenous shrinkage strain and bound water content of sealed concrete was obtained. Assuming that autogenous shrinkage strain depends only on bound water content even under drying, autogenous shrinkage strain under drying was estimated and then drying shrinkage was calculated. The present method showed that the conventional method based on the superposition principle overestimated autogenous shrinkage strain under drying, which also gave the percentages of autogenous shrinkage strain for total strain.
