철근구속을 받는 고강도 콘크리트의 자기수축응력에 관한 실험 연구

An experimental study on the measurement of stress due to autogenous shrinkage of high strength concrete with bar restraint

The purpose of this study is to investigate on the measurement of stress due to autogenous shrinkage of high strength concrete according to the W/C ratio at early age. The main parameters are as follows W/C ratio is 25, 30, 40%. The size of specimen is 10$\times$10$\times$150cm and the autogenous shrinkage strain is measured by the bonded strain gauge at the inside of the specimens. From the test, it is suggested that the autogenous shrinkage stress increased as W/C ratio decreased.