REPLACEMENT OF COARSE AGGREGATE WITH STEEL SLAG IN HOT MIX ASPHALT

Pramukh N, Jayadeva M N, Rahul Sona H R, S Shashank, Anand Sagar

Abstract: Flexible pavement is a structure consisting of a mixture of asphaltic or bituminous material and aggregates placed on a bed of compacted granular material of suitable nature in layers over the subgrade. The pavement should possess some characteristics such as riding quality, adequate skid resistance, favorable light reflecting characteristics, and low noise pollution. The main aim is to distribute of vehicular load to sub-grade. Hot mix asphalt (HMA) is a merger of 95% stone, sand, or gravel bound together by asphalt cement. Steel slag is a byproduct of the steel making process. The use of Steel slag in HMA can have a large economical, environmental, and engineering impact in pavement construction. Introduction of steel slag as aggregates reduces the demand for primary aggregates in nearby areas allowing the preservation of resources and reducing the indirect environmental impact caused by quarrying activities.

Keywords: Hot Mix Asphalt, Steel slag

DOI: https://doi.org/10.15623/ijret.2018.0707015