시멘트 종류에 따른 라텍스개질 콘크리트의 미세공극 구조분석

초록

Linear traverse method and point count method described at ASTM have been widely used to estimate the air void system in hardened concrete. These methods, however, are rarely used at present, because they require many efforts and time consuming works. Also these results depend on each person's decision, and are not repeatable. Thus, new image analysis method using microscope and computer processes has been approached for analyzing air void system in hardened concrete. The purpose of this study was to analysis the air void systems in latex-modified concretes using a reasonable and objective image analysis method with main experimental variables such as cement types(ordinary portland cement, rapid setting cement) and latex contents(0%,15%). In the results of this study, the use of polymer latex showed that it could be attributed to its air void systems, due to the fact that the latex emulsion acts as an air-entraining agent, which thus generally guarantees an adequate air-void system.

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