摘要
为了研究碳化钢渣对沥青混合料高温稳定性的影响,对粒径为5~10 mm与3~5 mm的钢渣粗集料进行碳化,与以未碳化钢渣制备的AC-10钢渣沥青混合料进行膨胀性与路用性能对比。研究结果表明:当碳化时间达到6 h,2档钢渣集料的f-CaO含量均低于3.0%,最大降幅达到了51.4%,并且碳化钢渣集料从光滑的界面向复杂致密的界面演变。碳化钢渣提高了钢渣混合料和钢渣沥青混合料的高温稳定性。基于综合性能判断,建议将6 h设置为最佳碳化时间。
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.
作者
朱耀阳
吴少鹏
谢君
涂亮亮
ZHU Yaoyang;WU Shaopeng;XIE Jun;TU Liangliang(State Key Lab Silicate Mat Architectures,Wuhan University of Technology,Wuhan 430070,China;Shenzhen Sez Construction Group Co.,Ltd,Guangdong,Shenzhen,518034,China)
出处
《现代交通与冶金材料》
CAS
2024年第4期18-22,48,共6页
Modern Transportation and Metallurgical Materials
基金
广西重点研发计划项目(2021AB26023)
湖北省重点研发项目(2022EHB006)
广西交通厅科技项目(2022EHB006)。
关键词
钢渣沥青混合料
碳化钢渣
f-CaO含量
高温稳定性
steel slag asphalt mixture
carbonated steel slag
f-CaO content
high temperature stability
