钢渣砂、石英砂混合骨料级配对水泥灌浆料性能影响的研究  

Study on the effect of mixed aggregate gradation on the performance of cement-based grouting material

作　　者：孙小巍[1] 何苗 礼航[1] 崔文军 张帆 刘小萱 宋泓霖 李思仪 SUN Xiaowei;HE Miao;LI Hang;CUI Wenjun;ZHANG Fan;LIU Xiaoxuan;SONG Honglin;LI Siyi(College of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang 110168,China;Shenyang Yatai Group Building Materials Co.,Ltd.,Shenyang 110136,China)

机构地区：[1]沈阳建筑大学材料科学与工程学院,辽宁沈阳110168 [2]亚泰集团沈阳建材有限公司,辽宁沈阳110136

出　　处：《混凝土》2019年第3期82-85,共4页Concrete

基　　金：沈阳建筑大学大学生创新训练计划项目(2017X04038)

摘　　要：将钢渣砂和石英砂作为骨料制备水泥基灌浆料,重点研究混合骨料级配对水泥基灌浆料工作性和力学性能的影响规律,并通过扫描电子显微镜对硬化浆体进行微观结构分析。试验结果表明:将钢渣砂(A砂、B砂)和石英砂(C砂)作为混合骨料可以制备性能符合标准的水泥基灌浆料;混合骨料级配对灌浆料流动度影响较大,当由3种砂组成连续开级配时,灌浆料流动度最优;灌浆料抗压强度受混合骨料堆积密度影响较大。当3种砂占比为30%∶30%∶40%时,灌浆料性能最优,初始流动度为350 mm,1、3、28 d抗压强度分别为33.9、46.2、67.7 MPa。The steel slag sand and quartz sand used as the aggregate in cement-based grouting material was studied in this research.The influence of mixed aggregate gradation on the workability and mechanical property of the cement-based grouting material were studied.Then the microscopic structure of hardened paste was analyzed by the scanning electron microscope (SEM).The experimental result shows the steel slag sand (A sand and B sand) and quartz sand (C sand) can be used as mixed aggregate to prepare cement-based grouting material with standard.The mixed aggregate gradation has a great influence on the fluidity of grouting material,and the fluidity is optimal with the continuous open gradation composed of three kinds of sand.The compressive strength of grouting material is greatly influenced by the bulk density of the mixed aggregate.When the proportion of three kinds of sand is 30%∶30%∶40%,the grouting material has the best performance,the initial fluidity is 350 mm,and the compressive strengths at 1,3 and 28 d are 33.9,46.2 and 67.7 MPa respectively.

关 键 词：钢渣砂 石英砂 灌浆料 级配 流动度 抗压强度 

分 类 号：TU528.041[建筑科学—建筑技术科学]