钢渣在道路工程中的应用研究进展
2021-01-11段德峰刘润喜王晓川周恒玉
段德峰 刘润喜 王晓川 周恒玉


摘 要:工业钢渣是工业炼钢生产过程中容易排出的固体残渣,是一种用于工业的固体废物,占工业生产中使用粗钢的15%~20%。钢渣具有碱性强、棱角丰富等特点,其主要金属矿物和有机化学成分与其他水泥料和熟料相似,具有潜在的有机水化学和反应活性。近年来,我国高速公路建设成就显著,其集料需求增大,使得常规的天然集料已经不能满足需求。钢渣集料是否能在高速道路上广泛应用发展是目前备受业界关注的一个热点。因此,本文总结大型钢渣的化学性质、活化特性、流动特性及稳定性的相关研究进展,并重点介绍了钢渣在城市道路交通工程设计中的实际应用情况。
关键词:钢渣利用;活性激发;道路工程
中图分类号:U414 文献标识码:A 文章编号:1003-5168(2021)23-0129-04
Abstract: Industrial steel slag is generally used as a solid residue that is easily discharged during industrial steelmaking production. It is a solid waste for industrial use, accounting for 15%~20% of crude steel used in industrial production. Steel slag has the characteristics of strong alkalinity, rich edges and corners, and its main metal minerals and organic chemical composition are similar to other cement materials and clinker, and it has potential organic water chemistry and reactivity. In recent years, China’s highway construction has achieved remarkable results, so the demand for aggregates has increased. Conventional natural aggregates can no longer meet the demand. Whether steel slag aggregates can be widely used on highways has become a hot spot in the industry. This paper mainly summarizes the research progress of the chemical properties, activation characteristics, flow characteristics and stability of large-scale steel slag, and focuses on the practical application of steel slag in the design of urban road traffic engineering.
Keywords: steel slag utilization;active excitation;pavement engineering
目前,我國钢铁工业产量居世界第一,每年钢铁产生的钢渣量占世界钢铁工业产量的15%~20%,钢渣每年排放量近亿吨。钢渣是加热炼钢生铁过程中的一种重要副产品,由生铁中的硅、锰、磷、硫等金属杂质在加热熔炼生铁过程中受热氧化所生成的各种惰性氧化物以及这些各种氧化物与其有助于热熔的溶剂(如石灰粉)进行反应后所生成的各种盐类混合组成[1]。大量的废钢渣长期积累,不仅占据大量施工场地,而且严重污染现场环境。合理利用钢渣资源不仅有利于环境保护,还能为企业带来经济效益。目前,我国工业钢渣综合利用率为50%~60%,远低于世界其他生产大型钢渣产品的国家。……
