잔골재 종류 및 감소제 첨가율에 따른 콘크리트의 공학적 특성에 관한 실험적 연구

An Experimental Study on the Engineering Properties of Concrete with Kind of Fine Aggregate and Addition Ratio of Water Reducing Agents

Recently, trouble of sand supply is occurred according to exhaustion of natural sand resources. To solve this problem, sea sand and crushed sand are used. But, necessity of water reducing agent because quality of concrete that use sea sand and crushed sand is deteriorated. Therefore in this study was examined on the engineering properties of concrete with kind of fine aggregate and addition ratio of water reducing agents. As a result, compressive strength appeared similar standard regardless of kind of fine aggregate. Compressive strength, durability was similar in decrease of the unit water content by increase of addition ratio of the water reducing agent. Also, drying shrinkage resistivity was improved because the unit water content decreased.