- 侯景鵬， 陳 群，史 巍，劉俊龍
2020年第11期
摘要
引用本文
摘 ? 要：研究了鋼渣和粉煤灰對C30重晶石防輻射混凝土工作性、力學性能、收縮性能、抗凍性能、抗碳化性能以及抗滲性能的影響。結果表明：重混凝土的坍落度隨粉煤灰摻量的增加而增加，隨鋼渣摻量的增加而降低；重混凝土的28 d抗壓強度隨粉煤灰摻量的增加而先增加后降低，粉煤灰摻量為30%時，28 d抗壓強度最大；重混凝土的收縮隨鋼渣和粉煤灰摻量的增加而降低，粉煤灰摻量為40%、鋼渣摻量為30%時重混凝土的60 d收縮最小，為191 με；鋼渣摻量為30%、粉煤灰摻量為40%時重混凝土凍融循環后的相對動彈性模量降低最小，抗凍性能最好；重混凝土的28 d碳化深度隨粉煤灰摻量的增加而線性增加；重混凝土的滲水高度隨鋼渣和粉煤灰摻量的增加而降低，粉煤灰摻量為40%、鋼渣摻量為30%的重混凝土滲水高度最小，為基準組的9.3%，抗滲性能大幅提高。
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.
侯景鵬, 陳群,史巍,等.鋼渣和粉煤灰對重混凝土性能的影響[J].混凝土與水泥制品,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.
