Basic Characteristics of Steel Slag and Its Application in Pavement Base Layer
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.
steel slagcement stabilizationmechanical characteristicspavement base layer
万方数据
维普
