废弃尾矿料在路面(底)基层中的应用

分析了废弃尾矿料的化学和物理性质及环境影响情况，结果表明其用作（底）基层材料和路基填料是安全可行的。利用正交试验方法，提出石灰粉煤灰（简称“二灰”）、掺加外剂和水泥的二灰（综合）稳定废弃尾矿料优选配合比，分析混合料强度增长机理和影响因素，并确定优选配合比混合料的路用技术参数。优选配合比将在连云港市旧路改造中作为1km长的试验路基层材料，以便进行现场试验验证和应用机理分析，为其推广应用于路面（底）基层提供技术上可行、经济上合理的优选配合比，并提供工程施工可操作性和质量保证体系。

Application of WKL to pavement subbase

The analysis of WKL chemical and physical properties,and environment effects was carried out.The results show that it can be applied to the subbase and roadbed.By the orthogonal test method, this paper proposed the optimized mixing for WKL stabilized by use of the lime fly ash,mixture mixed into the lime fly ash and cement mixed into the lime fly ash,analyzed various factors that may influence strength of the mixture,and determines their technical parameters for road applications.In Lianyungang,the optimized mixing was applied to pave the base of 1 km test road so as to examine the practical test and analyze the application mechanism.This study can provide the feasible and rational optimized mixing for the popularization and application of this material to pavement subbase,and provide the system of feasibility and guarantee for engineering construction.10 tabs,1 fig,4 refs.