부산대학교 도서관

The purpose of this study is to find out effect of compressive strength according to mixing rate of rice husk powder extraction from digestion into cementless concrete and synergy through chemical composition analysis. The binders of cementless concrete were fly ash, ground granulated blast furnace slag and rice husk powder produced to binary and ternary concrete. In order to examine the physical properties of cementless concrete according to the mixing rate of rice husk powder, the slump test, compressive strength were tested. And to figure out synergy effect with rice husk powder and other binders, SEM and EDS analysis was performed. As a result of the experiment, the slump increased as the mixing rate of rice husk powder increased in the binary concrete, and the slump increased as the mixing rate of fly ash increased in the ternary concrete. When rice husk powder was mixed, the initial compressive strength was higher than that of ordinary portland cement, and the higher the content of ground granulated blast furnace slag, the higher the compressive strength on the 28th. As a result of SEM and EDS analysis, it was confirmed that when rice husk powder was mixed, the Si/Al ratio was high and the compressive strength was improved.