钢渣-磨细粉煤灰复合矿物掺合料对混凝土性能的影响  

Influence of steel slag-superfine fly ash composite mineral admixture on the properties of concrete

作　　者：王喆[1] 王强[2] 杨建伟[2] 王栋民[1] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]清华大学土木工程系土木工程安全与耐久教育部重点实验室,北京100084

出　　处：《混凝土》2015年第5期79-82,共4页Concrete

基　　金：国家自然科学基金资助项目(51278277)

摘　　要：为了提高钢渣作为矿物掺合料在混凝土中的利用率,研究了掺入磨细粉煤灰对钢渣混凝土性能的改善效果。研究结果表明:在高水胶比情况下,复合矿物掺合料混凝土抗压强度明显高于钢渣混凝土,可以接近纯水泥混凝土;磨细粉煤灰含量较高时(40%)后期抗渗透性能优于纯水泥混凝土。在低水胶比情况下,磨细粉煤灰含量较低时(30%)抗压强度可以接近纯水泥混凝土,含量较高时(40%)抗压强度超过纯水泥混凝土;混凝土的后期抗渗透性能优于纯水泥混凝土。The improving effect of adding superfine fly ash on the properties of the concrete containing steel slag was investigated in or-der to enhance the utilization ratio of steel slag as the mineral admixture in concrete. The results show that in the case of high water binder ratio,the compressive strength of the concrete containing complex binder is much higher than that of the concrete containing steel slag and even close to that of the pure cement concrete.The long - term chloride permeability of the concrete containing complex binder with high superfine fly ash content is lower to that of the pure cement concrete.In the case of low water binder ratio,the compressive strength of the concrete containing complex binder with low superfine fly ash content is close to that of the pure cement concrete,and the compressive strength of the concrete containing complex binder with high superfine fly ash content is higher than that of the pure ce-ment concrete,and the long - term chloride permeability of the concrete containing complex binder is lower than that of the pure cement concrete.

关 键 词：钢渣 磨细粉煤灰 抗压强度 渗透性 

分 类 号：TU528.041[建筑科学—建筑技术科学]