市政技术2026，Vol.44Issue(8)：22-29,8.DOI:10.19922/j.1009-7767.2026.08.022
钢渣水泥稳定碎石强度及膨胀特性影响研究
Study on Strength and Expansion Characteristics of Steel Slag Cement-Stabilized Macadam
摘要
Abstract
Steel slag can be used as a substitute for natural aggregates in cement-stabilized macadam to prepare steel slag cement-stabilized macadam(SSCSM).This approach alleviates the shortage of natural aggregates and provides an effective route for the disposal of steel slag solid waste.To investigate the strength and expansion characteristics of SSCSM,the chemical composition and physical properties of steel slag were analyzed,and the influences of steel slag content and cement dosage on the compaction performance,unconfined compressive strength and expansion behavior of SSCSM were revealed.The test results show that when the steel slag content increases by 25％,the maximum dry density of SSCSM rises by 0.023 g/cm3,the optimum moisture content increases by 0.13％,while the unconfined compressive strength decreases by 4.26％.When the cement dosage increases by 0.5％,the maximum dry density and unconfined compressive strength of SSCSM increase by 0.032 g/cm3 and 2.97％,respectively,whereas no obvi-ous variation trend is observed for the optimum moisture content.Under the effect of cement temperature shrinkage,the water immersion expansion rate of SSCSM decreases first and then increases,and this descending trend becomes more significant at higher cement dosages.Taking economic efficiency and specification requirements into compre-hensive consideration,a cement dosage of 3.0％with 100％steel slag content is recommended for subbase courses,and a cement dosage of 3.5％with 50％steel slag content is suggested for base courses.The research findings can guide the material design of SSCSM and promote the engineering application of steel slag in pavement construction.关键词
路面基层/水泥稳定碎石/钢渣/强度/膨胀特性Key words
pavement base/cement-stabilized macadam/steel slag/strength/expansion characteristics分类
交通工程引用本文复制引用
余辉,张文升,徐瑞鑫,万铜铜,高杰..钢渣水泥稳定碎石强度及膨胀特性影响研究[J].市政技术,2026,44(8):22-29,8.基金项目
国家自然科学基金项目(52508499) （52508499）
江西省自然科学基金项目(20252BAC200342) （20252BAC200342）
