단위수량 변화에 따른 팽창재 혼입 콘크리트의 특성에 관한 연구

A Study on the Propertis of Expansive Additives Concrete with the Variation of Unit Water

The objective of this study is to improve the quality of concrete, which has been getting worse with high amount of unit water, by using Expansive Additives. 6% of addition ratios of expansive additives with the combination of 45%, 55% of W/B are selected under various amount unit water for this experiment. According to the experimental results, less than 180kg/$\textrm{m}^3$ of unit water has little influence on compressive strength and less length-change has been fond in 45% of W/B.