earticle

영어

The purpose of this study is to find out effect of compression strength according to mixing rate of rice husk powder extraction from digestion into cementless mortar and synergy through chemical composition analysis. The binders of cementless mortar were fly ash, ground granulated blast furnace slag and rice husk powder produced to unary, binary and ternary mortar. In order to examine the physical properties of cementless mortar according to the mixing rate of rice husk powder, the table flow, compressive strength and flexural strength were tested. And to figure out synergy effect with rice husk powder and other binders, XRF analysis was performed. As a result of the experiment, the mixing rate of rice husk powder was increased, the table flow was higher than ordinary portland cement because of the lignin amount being increased according to the mixing rate of rice husk powder. The early compressive strength of the binary and ternary mortar were higher than ordinary portland cement, and the compression strength on the 28 days was higher in the order of ternary, binary and unary mortar. The XRF analysis results showed that the Si/Al ratio was higher when rice husk powder was mixed than excluding, resulting higher compressive strength. This means that mixing rice husk powder increases the Si/Al ratio, contributing the development of compressive strength.