Physical Properties of Cement Mortar using Aluminum Sulfate as Admixture for Early Strength

초기강도 증진을 위한 황산알루미늄 혼입 시멘트 모르타르의 물리적 특성

The purpose of this study is to examine the effect of aluminium sulfate on setting time and compressive strength of cement mortar as focused on formation of ettringite by the reaction between aluminium sulfate and calcium hydrate. The specific parameter was the addition ratio of aluminium sulfate to cement mortar. After specimens made by admixing aluminium of 0~7% by weight of cement, respectively, to cement mixtures, the experimental items such as setting time, compressive strength and heat of hydration in this study were carried out. As a result of this study, it is possible that aluminium sulfate could be added into cement mixture from a standpoint of increasing early compressive strength as considering the setting time and heat of hydration.