海砂 混合率 變化에 따른 水中不分離性 콘크리트의 特性에 관한 硏究

Abstract

The objective of this study is to investigate the characteristics change of antiwashout underwater concrete with variation of blen ratio of sea sand to total fine aggregates through experimental studies. The flowability(slump flow test), antiwashout properties(pH and suspension test), filling property(box test), air and chloride contents property, and the unit weight and the compressive strength of both cast-in-fresh water and cast-in-sea water have been examined experimentally. According to the experimental results, when sea sand are mixed in antiwashout underwater concrete mixture by about 40% per total fine aggregates, it is found that the flowability fit and the compressive strength is higher than others.