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Abstract

Steel slag aggregate has good building material properties, but the utilization rate of steel slag in road engineering is low at present. In this paper, the chemical composition, basic physical and mechanical indexes, f⁃CaO, f⁃MgO, pulverization rate, CRB expansion rate, and other indexes of open-air aged steel slag aggregate in Fangchenggang, Guangxi Province for 0, 6, and 12 months were studied. The results show that the physical and mechanical properties of steel slag aggregate basically meet the requirements of road base materials and subgrade fillers, but the indexes of f⁃CaO, pulverization rate, and CRB expansion rate of steel slag aggregate aged 0 and 6 months fail to meet the requirements of road base and backfill materials. The steel slag aggregate aged 12 months is slightly less than the standard limit. It can be seen that the steel slag aggregate used for road base and backfill materials must be aged in the open air for at least 12 months to meet the road stability requirements.

Publication Date

3-17-2023

DOI

10.14048/j.issn.1671-2579.2023.01.036

First Page

203

Last Page

206

Submission Date

March 2025

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