Abstract

This paper mainly discusses the application of fine powder in iron tailings in ordinary dry mixed mortar. The effect of fine powder in iron tailings on the durability (frost resistance, impermeability and shrinkage) of common dry mixed mortar after replacing river sand or machined sand with iron tailings was studied. The microcosmic analysis was carried out by SEM. Under the condition of satisfying the mobility and strength of ordinary dry mixed mortar, iron tailings can replace river sand or mechanized sand in different proportion, and the micro powder in iron tailings can improve the durability of dry mixed mortar. Through the study of the influence of fine powder in iron tailings on the properties of ordinary mortar, it can be found that it is feasible to use iron tailings to produce ordinary dry mixed mortar, and can meet the requirements of current engineering, national or industry standards.

摘要

本文主要讨论了细粉在普通干混砂浆中在铁尾矿中的应用。研究了铁尾矿中细粉对普通干混砂浆用铁尾矿代替河砂或机加工砂后的耐久性（抗冻性，抗渗性和收缩性）的影响。微观分析通过SEM进行。在满足普通干混砂浆的流动性和强度的条件下，铁尾矿可以不同比例代替河砂或机械砂，铁尾矿中的微粉可以提高干混砂浆的耐久性。通过研究铁尾矿中细粉对普通砂浆性能的影响，可以发现用铁尾矿生产普通干混砂浆是可行的，