팽창재 사용량 변화에 따른 콘크리트의 건조수축 해석

The present research analyzed various engineering properties and drying shrinkage of concrete using EA and progressed analysis of drying shrinkage by JSCE and an exponential function model, And if the results are summarized, it is as follows. First, the slump and air content as properties of fresh concrete appears to largely fall according to use of EA, and the compressive strength showed a trend to fall a little according to increase of a replacement ratio of EA, but its difference was insignificant. In an aspect of a drying shrinkage property, as the replacement ratio of EA increases, the drying shrinkage fell by maximum 26.2%, and as a result of analysis of drying shrinkage of concrete using EA, it could be known that the existing model equation of JSCE doesn't accurately consider the influence of admixture, and the influence of EA is properly reflected according to use of the exponential function model in the present research, so it is necessary to propose an integrated model equation reflecting the influence of EA through the future research.