- 侯景鹏， 陈 群，史 巍，刘俊龙
2020年第11期
摘要
引用本文
摘 要：研究了钢渣和粉煤灰对C30重晶石防辐射混凝土工作性、力学性能、收缩性能、抗冻性能、抗碳化性能以及抗渗性能的影响。结果表明：重混凝土的坍落度随粉煤灰掺量的增加而增加，随钢渣掺量的增加而降低；重混凝土的28 d抗压强度随粉煤灰掺量的增加而先增加后降低，粉煤灰掺量为30%时，28 d抗压强度最大；重混凝土的收缩随钢渣和粉煤灰掺量的增加而降低，粉煤灰掺量为40%、钢渣掺量为30%时重混凝土的60 d收缩最小，为191 με；钢渣掺量为30%、粉煤灰掺量为40%时重混凝土冻融循环后的相对动弹性模量降低最小，抗冻性能最好；重混凝土的28 d碳化深度随粉煤灰掺量的增加而线性增加；重混凝土的渗水高度随钢渣和粉煤灰掺量的增加而降低，粉煤灰掺量为40%、钢渣掺量为30%的重混凝土渗水高度最小，为基准组的9.3%，抗渗性能大幅提高。
Abstract: The influence of steel slag and fly ash on the workability, mechanical properties, shrinkage, frost resistance, carbonation resistance and water permeability of C30 barite shield concrete was studied. The results show that the slump of heavy concrete increases with the increase of fly ash content, and decreases with the increase of steel slag content. The 28 d compressive strength of heavy concrete increases first and then decreases with fly ash content, and when the fly ash content is 30%, the 28 d compressive strength is the highest. The shrinkage of heavy concrete decreases with the addition of steel slag and fly ash, and when fly ash content is 40%, steel slag content is 30%, the shrinkage of heavy concrete at 60 d is the lowest, which is 191 με. When steel slag content is 30% and fly ash content is 40%, the relative dynamic elastic modulus of heavy concrete after freeze-thawing cycle decreases the least and the frost resistance is the best. The 28 d carbonation depth of heavy concrete increases linearly with fly ash content. The water seepage depth of heavy concrete decreases with the addition of fly ash and steel slag, and when fly ash content is 40%, steel slag content is 30%, the heavy concrete has the lowest water seepage depth, which is 9.3% of the reference heavy concrete, and the water seepage performance is greatly improved.
侯景鹏, 陈群,史巍,等.钢渣和粉煤灰对重混凝土性能的影响[J].混凝土与水泥制品,2020(11):92-95.
HOU J P,CHEN Q,SHI W,et al.Effect of Steel Slag and Fly Ash on the Performance of Heavy Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11):92-95.
