摘   要：采用钢渣石、钢渣砂分别等质量取代碎石、河砂制备了钢渣混凝土，研究了钢渣混凝土的抗碳化性能，并建立了不同保护层厚度钢渣混凝土的碳化寿命预测模型。结果表明：随着钢渣石、钢渣砂取代率的增加，试件的抗碳化性能先增强后减弱，且当钢渣石、钢渣砂取代率均为50%时，试件的抗碳化性能最好；建立的碳化寿命预测模型的精度较高，可为实际工程中钢渣混凝土结构的碳化寿命预测提供参考。

Abstract: Steel slag concrete was prepared by replacing gravel and river sand with steel slag stone and steel slag sand of equal quality. The carbonation resistance of steel slag concrete was studied, and the carbonation life prediction model of steel slag concrete with different protective layer thickness was established. The results show that with the increase of the replacement rate of steel slag stone and steel slag sand, the carbonation resistance of the specimen first increases and then decreases, and when the replacement rate is 50%, the carbonation resistance of the specimen is the best. The established carbonation life prediction model has high accuracy, which can provide a reference for the carbonation life prediction of steel slag concrete structures in practical engineering.