钢渣-纳米SiO_2复掺混凝土抗压强度及耐久性能研究

Research on compressive strength and durability of steel slag concrete with nano SiO_2

研究了钢渣单掺及钢渣与纳米SiO_2复掺的钢渣混凝土工作性能、抗压强度及耐久性能。结果表明,掺加钢渣有利于提高混凝土的流动性、抗压强度及耐久性能,钢渣掺量为20%时,钢渣混凝土抗压强度较未掺钢渣的提高9.98%,氯离子迁移系数降低14.08%。在钢渣混凝土中掺加纳米SiO_2可以进一步改善钢渣混凝土抗压强度、耐久性能,通过掺加纳米SiO_2来进一步提高钢渣混凝土中钢渣取代率是可行的。

This paper studies the working performance, compressive strength and durability of steel slag concrete and steel slag concrete with nano SiO2 composite. The results show that,adding slag powder can improve the fluidity, compressive strength and durability of concrete. When steel slag powder content is 20% of steel slag concrete,compressive strength increased by 9.98%,and chloride ion mobility coefficient decreased by 14.08%. Adding nano SiO2 can further improve compressive strength and durability of steel slag concrete. Methods of adding nano SiO2 to further improve replacement ratio of steel slag is feasible.