An Analysis on the Properties of Undispersed Underwater Mortar for Augered Pile with Expansive Additives

팽창재 혼입율 변화에 따른 오거파일용 수중불분리 모르터의 특성 분석

As a part of the study on the development of augered pile method, this study is intended to investigate the properties of fresh and hardened mortar with the proportion of expansion additives. With the increase of proportion of expansion additives, the fluidity of mortar shows a decrease while air content increases and setting time gets retarded. It show the satisfactory property in strength at 5% of proportion, and shows more expansion with the increase of proportion of expansion additives and sand/cement ratio. In conclusion, both of strength and expansion reveal appropriate at 10% of proportion of expansion additives.