Nghiên cứu hiệu quả kỹ thuật của tỷ lệ thay thế đá dăm bằng cốt liệu xỉ thép trong chế tạo bê tông thủy công

Abstract

In the study, used mineral additives such as Fly Ash (FA) and Granulated Blast Furnace Slag (GBFS), coarse aggregates such as crushed stone and Steel slag replaces crushed stone at 25%, 50%, 75%, 100% respectively to design concrete components reaching design grades from M40 to M50. When the content of steel slag aggregate replaces crushed stone aggregate from 75% to 100%, the compressive strength of concrete increases very high, increasing from 30,37% to 41,72% at 7 days old and 6,11 % to 13,10% at 28 days of age, the waterproofing grade of the designed concrete ranges from W10 to W14, it’s suitable for irrigation works.