钢渣对高原混凝土耐久性影响的研究进展

摘要/Abstract

摘要： 钢渣大量堆存会对生态环境造成严重危害,将钢渣应用于混凝土是提高钢渣利用率的有效途径之一。然而在低压及干燥耦合作用下,活性低等问题制约了钢渣在高原混凝土中的应用和发展。本文基于高原气候特点,综合评述了钢渣对高原混凝土抗冻性、抗盐蚀性及抗干燥收缩方面的影响,分析了钢渣性质,总结了钢渣作为掺合料及骨料存在的问题。通过对现有研究的归纳发现,预处理钢渣及加入适量矿物外加剂有助于改善钢渣活性,促进混凝土结构致密,提高钢渣在高原混凝土中的适用性。

关键词: 混凝土, 钢渣, 高原气候, 耐久性, 界面过渡区, 预处理, 矿物外加剂

Abstract: The extensive accumulation of steel slag poses a severe threat to ecological environment. Utilizing steel slag in concrete effectively enhances the utilization rate. Under the coupling effect of low pressure and drying, the low activity problem restricts the application and development of steel slag in plateau concrete. This study focuses on the unique characteristics of plateau climate and comprehensively reviews the impact of steel slag on the frost resistance, salt erosion resistance, and shrinkage resistance of plateau concrete. Additionally, it analyzes the properties of steel slag and summarizes the challenges associated with using steel slag as an admixture and aggregate. Through a thorough analysis of existing research, we find that appropriate pretreatment of steel slag and the addition of suitable mineral admixtures can enhance the reactivity of steel slag, promote the development of more compact concrete structures, and improve the applicability of steel slag in plateau concrete.

Key words: concrete, steel slag, plateau climate, durability, interface transition zone, pretreatment, mineral admixture

中图分类号:

TU528

白卿, 邓威, 陆福洋, 翟健梁, 赖淏, 毛楠, 师长春, 熊锐. 钢渣对高原混凝土耐久性影响的研究进展[J]. 硅酸盐通报, 2023, 42(12): 4332-4340.

BAI Qing, DENG Wei, LU Fuyang, ZHAI Jianliang, LAI Hao, MAO Nan, SHI Changchun, XIONG Rui. Research Progress on Effect of Steel Slag on Durability of Plateau Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(12): 4332-4340.

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