高钛重矿渣作为集料用于沥青混合料的可行性分析研究  

Feasibility analysis of high-titanium heavy slag as aggregate for asphalt mixture

作　　者：王伟[1] 汪杰 梁月华 Wang Wei;Wang Jie;Liang Yuehua(School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;School of Civil and Architectural Engineering,Panzhihua University,Panzhihua 617000,Sichuan,China)

机构地区：[1]重庆交通大学土木工程学院,重庆400074 [2]攀枝花学院土木与建筑工程学院,四川攀枝花617000

出　　处：《钢铁钒钛》2022年第4期87-93,共7页Iron Steel Vanadium Titanium

基　　金：钒钛资源综合利用四川省重点实验室(2021FTSZ15)资助。

摘　　要：以攀西地区高钛重矿渣为研究对象,通过理论及试验研究分析了其作为集料用于沥青混合料的可行性,并与目前沥青混合料常用的玄武岩等天然石料进行了对比分析。研究结果表明:高钛重矿渣表观形貌呈粗糙多孔状且为碱性集料,与沥青黏附性能优于天然石料,粘附性等级为5级;高钛重矿渣为五元渣系,属低钙富钛渣、低活性渣,体积稳定性及高温稳定性好;高钛重矿渣具有优异的颗粒形态特性且力学性能、耐久性能良好,但密度略低于天然石料且吸水率更高;高钛重矿渣作为沥青混合料集料的综合性能不低于天然石料,且具有明显的环境、经济效益。Taking the high-titanium heavy slag in Panxi area as the research object,the feasibility of using it as aggregate for asphalt mixture was analyzed through theoretical and experimental research,also it was compared with the natural stone such as basalt commonly used in asphalt mixture at present.The results show that the surface morphology of high-titanium heavy slag is rough and porous,and it is alkaline aggregate.Its adhesion performance with asphalt is better than that of natural stone,and its adhesion grade is grade 5.High-titanium heavy slag is a five-element slag system,belonging to low calcium and titanium-rich slag and low active slag,with good volume stability and high-temperature stability.High-titanium heavy slag has excellent particle morphology,mechanical properties and durability,but its density is slightly lower than that of natural stone and the water absorption is higher.The comprehensive performance of high-titanium heavy slag as aggregate of asphalt mixture is no worse than natural stone,and it has obvious environmental and economic benefits.

关 键 词：高钛重矿渣 沥青混合料 表观特性 稳定性 粘附性 

分 类 号：X757[环境科学与工程—环境工程] TU528[建筑科学—建筑技术科学]