China has a huge stock of steel slag with complex compositions and a low utilization rate,occupying a large amount of land and polluting the environment.This paper conducted an experimental study of the basic characteristics of the steel slag and the mechanical characteristics of the cement-stabilized steel slag from a steel mill in Shanxi Province to analyze the mineral compositions,expansibility,crushing value,and pulverization rate.The cement-stabilized steel slag with different ratios was prepared,the optimal water content and maximum dry density were determined by compaction test,and the 7-d unconfined compressive strength was tested.The study results showed that at the cement dosage of 5％,the steel slag mixture's optimal water content was 6.43％,the maximum dry density was 2.54 g/cm3,and the 7-d unconfined compressive strength was 6.48 MPa,with an optimal compaction effect.The basic characteristics of the steel slag and the compressive strength of the cement-stabilized steel slag all met the specification requirements,which can be used in the pavement base layer with most highway grades and traffic load grades.
关键词
钢渣/水泥稳定/力学特性/路面基层
Key words
steel slag/cement stabilization/mechanical characteristics/pavement base layer
维普
万方数据