건조수축 저감형 유동화제를 사용한 콘크리트의 물리적 특성에 관한 연구

A Study on the Physical Properties of Concrete Using Drying Shrinkage-Reducing Superplasticizer

This paper intended to evaluate the applicability of drying shrinkage reducing superplasticizer (DSRA) by investigating physical properties of concrete using DSRA, The application of flowing concrete method exhibited a less loss of slump and air content with time than those of conventional concrete and had small bleeding. Flowing concrete had larger compressive strength than base and conventional concrete by as much as $3\~5\%$. It also had less drying shrinkage by as much as $20\%$ compared with conventional concrete. This is due to the coupled effect of reduced water content and aqueous type expansive admixture. On the other hand, neutralization depth of flowing concrete showed greater than conventional concrete.