基于正交试验的掺铁尾矿砂水泥基材料性能研究  

Study on the properties of cement-based materials with iron tailings sand based on orthogonal test

作　　者：闵柯 王玲玲[1] MIN Ke;WANG Lingling(School of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang 110168,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

出　　处：《混凝土与水泥制品》2025年第4期109-112,共4页China Concrete and Cement Products

摘　　要：通过正交试验研究了水胶比(0.30、0.35、0.40)、铁尾矿砂取代率(20%、40%、60%)、粉煤灰掺量(10%、20%、30%)对水泥基材料流动度、28 d抗折强度和抗压强度的影响。结果表明:掺铁尾矿砂水泥基材料的最佳配合比为水胶比0.35、铁尾矿砂取代率40%、粉煤灰掺量10%,此时,掺铁尾矿砂水泥基材料的流动度为174.7 mm,28 d抗折强度和抗压强度分别为9.3 MPa和53.5 MPa。The effects of water-binder ratio(0.30,0.35,0.40),substitution rate(20%,40%,60%)of iron tailings sand,and content(10%,20%,30%)of fly ash on the fluidity,28 d flexural strength and compressive strength of cement-based materials were investigated using orthogonal experimental design.The results show that,the optimal mix proportion of cement-based materials with iron tailings sand is as follows:water-binder ratio of 0.35,substitution rate of iron tailings sand of 40%,and content of fly ash of 10%.And the fluidity of the cement-based materials with iron tailings sand is 174.7 mm,the 28 d flexural strength and compressive strength of 9.3 MPa and 53.5 MPa,respectively.

关 键 词：铁尾矿砂 水泥基材料 正交试验 配合比优化 力学性能 微观形貌 

分 类 号：TU528.0[建筑科学—建筑技术科学]