내구성증진용 혼화제(DIA) 및 부순 잔골재의 복합 치환이 순환잔골재를 사용한 고로슬래그 벽돌의 특성에 미치는 영향

Effects of Crushed Fine Aggregate and Durability Improvement Agent (DIA) on Blast Furnace Slag-Based Brick

This study investigates the effect of crushed fine aggregate and chemical admixture (durability improvement agent, named DIA) on blast furnace slag-based brick. The control brick was made with recycled fine aggregate of 100% and, no cement was used. Test results showed that all specimens developed similar strength, except for the specimen without partial replacement of crushed fine aggregate at 3 days. However, it is interesting to note that this specimen without crushed fine aggregate resulted in the highest strength at 7 days. In addition, the DIA had a major effect on the absorption ratio of brick specimens. For the brick specimens with partial replacement of crushed fine aggregate with 10%, the addition of DIA with only 1% was enough to satisfy the code regulated by KS F 4004.