Setting and Mechanical Properties of Concrete Under Various Types and Contents of Super retarders

초지연제의 종류 및 혼입율 변화에 따른 콘크리트의 응결 및 역학적 특성

In this paper, setting and strength properties of concrete with contents of super retarding agent are discussed. Gluconic acid and sucrose and used for super retarding agent. According to experimental results, as super retarding agent content increases, slump show to be increased, while air content decrease about 1~2%. In case of setting properties, as super retarding agent content increases, setting time delays considerable. When gluconic acid and sucrose is added about 0.3%, it delays more than 10days. Compressive strength of concrete of concrete with super retarding agent shows to be higher than that without it. Retarding of setting time of concrete using gluconic acid is longer than that using sucrose.