시멘트 및 Fly Ash 모르타르의 해수·담수 습윤양생에 따른 물리적 특성에 관한 연구

Abstract

The mortar and concrete made by cement are extensively used construction materials, the research and development of complex materials used cement have operated remarkable growth about durability and the quality of materials. Accordingly, to compare with physical characteristics of chloride ion permeation on fly ash added mortar and concrete analyzed physical characteristics that ordinary portland cement mortar and fly ash cement mortar carry out wet curing each for one, three, seven, twenty-eight day on fresh water·sea water. 1. The Fly ash cement value of uniaxial compressive strength, brazilian strength, direct shear strength test, specific gravity, schmidt hammer test, point road test is initially about 5~20% lower than ordinary portland cement at the physical characteristics but an increase ratio of fly ash cement in the long term is higher than ordinary portland cement. 2. The friction angle of direct shear strength test wholly approximate 90° and cohesion is 29.42~593.34 bigger than rocks because the cement mortar made wet curing is high water content in ratio of dry weight. On this study, fly ash cement indicated an high increase ratio in sea water. Through the experiment and valuation of various view point, methods make up for data if so we will be advanced application probability of construction site.