혼합재를 사용한 고강도 콘크리트의 제조와 물성에 관한 연구

A Study on Production and Physical Properties of High-Strength Concrete with Blending Additives

High-strength concrete were produced with super-plasticizer, silica fume, fly ash and blast furnace slag powder. Topics investigated inclued mix proportion, and effects of unit weight of binder, W/C ratio, additive type on the physical properties of high-strength concrete. As the result, at 20% of silica fume, unit weight of binder 700kg/$\textrm{m}^3$ and W/C=0.24, 28days compressive strength of concrete was over 1,000kgf/$\textrm{cm}^2$. And in cases of blending with silica fume 10% and fly ash or slag 10%, it was able to produce economical high-strength concrete with 28 days strength similar to silica fume 20% only, and higher strength after 90days.