Study on the effect of carbonated steel slag on the high temperature stability of asphalt mixtures
In order to study the effect of carbonated steel slag on the high temperature stability of as-phalt mixture,the steel slag coarse aggregate with particle size of 5～10 mm and 3～5 mm is carbon-ated,and the expansion and road performance of AC-10 steel slag asphalt mixture prepared with uncar-bonated steel slag are compared.The results show that when the carbonation time reaches 6 h,the f-CaO content of the second grade steel slag aggregate is less than 3.0%,and the maximum decrease reaches 51.4%.Moreover,the carbonated steel slag aggregate evolves from a smooth interface to a complex and dense interface.Finally,carbonated steel slag improves the high temperature stability of steel slag mixture and steel slag asphalt mixture.Based on the comprehensive performance judgment,it is recommended to set 6 h as the optimal carbonation time.
steel slag asphalt mixturecarbonated steel slagf-CaO contenthigh temperature stability
万方数据
维普
