铁尾矿砂中石粉含量对硫铝酸盐水泥基高性能混凝土耐久性能的影响  

Effect of Stone Powder Content in Iron Tailings Sand on Durability of Aluminum Sulfate Cementitious High-Performance Concrete

作　　者：孙志磊 杜冲冲 

机构地区：[1]山东华森凤山建材有限公司,山东 济南 [2]济南高新控股集团有限公司,山东 济南

出　　处：《材料化学前沿》2024年第1期1-6,共6页Advances in Material Chemistry

摘　　要：铁尾矿砂是一种细骨料,其材料性质与天然砂相近,具有其表面粗糙、棱角多的特点;铁尾矿砂是铁加工矿场在特定的经济技术条件下,对铁矿石进行精细研磨并选择有用成分的废料。本文探讨了铁尾矿砂中石粉含量对硫铝酸盐水泥基高性能混凝土耐久性的影响,主要研究铁尾矿砂中石粉含量对硫铝酸盐水泥基高性能混凝土性能(抗渗性和抗冻性)影响。研究得出:随着其铁尾矿砂中石粉含量的增加,其高性能混凝土抗渗性能和抗冻性能都逐渐提高。Iron tailings sand is a fine aggregate with material properties similar to that of natural sand, with the characteristics of rough surface and multiple edges and angles;iron tailings sand is the waste discharged by iron processing ore factories that grind iron ore finely and select useful components under specific economic and technical conditions. This paper discusses the effect of stone powder content in iron tailings sand on the durability of aluminum sulfate cementitious high-performance concrete, and studies the effect of stone powder content in iron tailings sand on the properties of high-performance concrete (impermeability and frost resistance) of aluminum sulfate cementitious. Test results: With the increase of stone powder content in iron tailings sand, the impermeability and freeze resistance of high-performance concrete are gradually improved.

关 键 词：铁尾矿砂 硫铝酸盐水泥基高性能混凝土 抗渗性 抗冻性 

分 类 号：TU5[建筑科学—建筑技术科学]