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.
关键词
钢渣沥青混合料/碳化钢渣/f-CaO含量/高温稳定性
Key words
steel slag asphalt mixture/carbonated steel slag/f-CaO content/high temperature stability
维普
万方数据