水泥稳定钢渣碎石基层材料的路用性能研究  

Road performance of subgrade consisted of cement stabilized steel slag and crushed stone

作　　者：王清洲 梁瑛硕 赵云飞 张志银 马士宾 WANG Qingzhou;LIANG Yingshuo;ZHAO Yunfei;ZHANG Zhiyin;MA Shibin(School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China;School of Highway,Chang’an University,Xi’an 710061,China)

机构地区：[1]河北工业大学土木与交通学院,天津300401 [2]长安大学公路学院,陕西西安710061

出　　处：《水资源与水工程学报》2023年第1期143-151,共9页Journal of Water Resources and Water Engineering

基　　金：国家自然科学基金项目(51978237)。

摘　　要：为保证公路半刚性基层性能的前提下最大限度地使用钢渣,尝试将级配不良的自然级配水泥稳定钢渣混合料用于低等级道路的基层,探究级配对水泥稳定钢渣混合料力学性能、收缩性能和耐久性的影响,分析自然级配水泥稳定钢渣混合料用于低等级公路半刚性基层的可行性和适用性。结果表明:4类级配的水泥稳定钢渣碎石混合料的力学性能均随着龄期和水泥掺量的增加而增长,中级配各项性能最优,自然级配的性能最差。级配显著影响混合料的力学性能、收缩性能和疲劳性能。尽管掺加自然级配的水泥稳定钢渣混合料因级配不良将降低其路用性能,但各项路用性能指标均能够满足规范中对低等级公路的技术要求,同时因能够最大限度地利用钢渣修筑道路基层,将具有较好的社会和经济效益,推荐掺自然级配钢渣的水泥稳定钢渣混合料应用于低等级公路基层。In order to ensure the performance of semi-rigid subgrade under the premise of maximum use of steel slag,naturally graded cement stabilized steel slag mix with poor gradation was applied to low-grade road subgrade to explore the influence of gradation on the mechanical properties,shrinkage properties and durability of cement stabilized steel slag mix.Moreover,the feasibility and applicability of this mix in the construction of semi-rigid subgrade of low-grade roads were investigated.The results showed that the mechanical properties of the four types of graded cement stabilized steel slag mixes increased with the increase of age and cement dosage,with the best performance of the mix with medium gradation and the worst performance of that with natural gradation.The gradation significantly affects the mechanical properties,shrinkage properties and durability properties of the mix.Although the road preformance of naturally graded cement stabilized steel slag mix is inferior due to poor gradation,its road performance indicators are still able to meet the requirements of the specification for low-grade roads,as well as maximizes the use of steel slag in the construction of road subgrade,which will bring better social and economic benefits.Therefore,it is recommended that the cement stabilized steel slag mix with natural graded steel slag should be adopted for the low-grade road subgrade.

关 键 词：水泥稳定碎石 钢渣 级配不良 自然级配 路用性能 

分 类 号：TU521[建筑科学—建筑技术科学] U416.214[交通运输工程—道路与铁道工程]