水泥稳定钢渣碎石基层材料实验研究  

Experimental study of cement stabilized steel slag crushed stone base material test

作　　者：赵毅 田昌 郑煜 胡楠 陈南京 赵倩 ZHAO Yi;TIAN Chang;ZHENG Yu;HU Nan;CHEN Nan-jing;ZHAO Qian(College of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Shengzan Construction Engineering Co.,Ltd.,Chongqing 404100,China)

机构地区：[1]重庆交通大学材料科学与工程学院,重庆400074 [2]重庆晟赞建设工程有限公司,重庆404100

出　　处：《应用化工》2023年第12期3321-3324,3327,共5页Applied Chemical Industry

基　　金：河北省交通运输厅科技项目(QC2018-3);重庆市研究生联合培养基地建设项目(JDLHPYJD2021011)。

摘　　要：采用钢渣替代碎石,设计了5种配比的水泥稳定钢渣碎石混合料。通过力学和抗裂性能实验,得出钢渣和石料的最佳掺配比例。研究表明,使用钢渣代替局部粗骨料可以大幅提高水泥稳定碎石混合料的抗压强度和劈裂强度。干缩系数随钢渣掺量增大呈现减小趋势,掺加钢渣后能够明显减少因失水产生的干缩变形,但钢渣掺量不能过多,否则会导致水泥稳定碎石混合料温度收缩变形增大。经过综合评估,建议采用粗钢细石(粗集料采用钢渣,细集料采用石灰石)的替代组合。Steel slag is used instead of gravel,and five kinds of cement stabilized steel slag gravel mixtures are designed.The optimum mixing ratio of steel slag and stone was obtained through the experiments of mechanics and crack resistance.The results show that the compressive strength and splitting strength of cement-stabilized macadam mixture can be greatly improved by using steel slag instead of local coarse aggregate.The dry shrinkage coefficient decreases with the increase of steel slag content.The dry shrinkage deformation caused by water loss can be significantly reduced after steel slag is added,but the steel slag content should not be too much,otherwise the temperature shrinkage deformation of cement stabilized crushed stone mixture will increase.After comprehensive evaluation,the alternative combination of coarse steel and fine stone(steel slag for coarse aggregate and limestone for fine aggregate)is recommended.

关 键 词：钢渣 水泥稳定钢渣碎石基层 力学性能 抗裂性能 

分 类 号：TQ178[化学工程—硅酸盐工业] TQ172.44[建筑科学—建筑技术科学] TU528.041