固体废料磷石膏路面基层综合利用试验研究  

Experimental Study on Comprehensive Utilization of Solid Waste Phosphogypsum Pavement Base

作　　者：谢从莉 XIE Cong-li(The Fifth Engineering Co.,Ltd.of China Railway 18th Bureau Group,Tianjin 300451,China)

机构地区：[1]中铁十八局集团第五工程有限公司,天津300451

出　　处：《广东交通职业技术学院学报》2023年第2期17-21,共5页Journal of Guangdong Communication Polytechnic

摘　　要：磷石膏类似于土,是一种良好的工程材料。为了解其作为路面基层材料的可行性,通过室内试验对磷石膏路用材料进行含水率和力学性能测试,综合分析磷石膏脱水规律,考虑工程应用的便利性,提出适用于工程实际应用的磷石膏含水率定义。根据磷石膏的脱水过程,建议工程中采用120~130℃温度测定磷石膏含水率,且烘干时间在9h以上。随着压实度的增大,磷石膏的力学特性也会提升。Phosphogypsum is similar to soil,which is a good engineering material.In order to understand the feasibility of using phosphogypsum as pavement base material,the moisture content and mechanical properties of phosphogypsum road material are tested through indoor test,the dehydration law of phosphogypsum is comprehensively analyzed,and the convenience of engineering application is considered,and the definition of phosphogypsum moisture content suitable for engineering application is proposed.According to the dehydration process of phosphogypsum,it is suggested that the moisture content of phosphogypsum should be measured at 120~130℃and the drying time should be more than 9 h.With the increase of compaction degree,the mechanical properties of phosphogypsum are better.

关 键 词：磷石膏 路面 固体废料 综合利用 

分 类 号：U414[交通运输工程—道路与铁道工程]