电弧炉钢渣对温拌沥青混合料静动态力学性能的影响  

Effect of Electric Arc Furnace Slag on the Static and Dynamic Mechanical Properties of Warm Mix Asphalt Mixture

作　　者：谭天锋 王志祥 TAN Tianfeng;WANG Zhixiang(Guangdong Transportation Technology Testing Co.Ltd.,Guangzhou 510420,China)

机构地区：[1]广东交科检测有限公司,广州510420

出　　处：《武汉理工大学学报(交通科学与工程版)》2025年第2期420-426,共7页Journal of Wuhan University of Technology(Transportation Science & Engineering)

基　　金：广东省交通运输厅科技项目(2017-01-001-06);广东华路交通科技有限公司自主立项科技项目(CD4-137-20243)。

摘　　要：采用电弧炉钢渣替代0%、25%、50%、75%的石灰岩粗集料,并添加1.5%用量Sasobit温拌改性剂制备温拌沥青混合料,然后采用静态力学试验(马歇尔和间接拉伸试验)和动态力学试验(动态蠕变和弹性模量试验)探究不同掺量下电弧炉钢渣对温拌沥青(WMA)和热拌沥青(HMA)混合料的力学性能的影响,并采用双因素方差分析电弧炉钢渣和Sasobit温拌剂对混合料静动态力学性能指标的影响作用.结果表明:电弧炉钢渣具有优异的工程集料特性,可替代粗集料大掺量用于HMA和WMA混合料,随着电弧炉钢渣掺量的增加,可提高沥青混合料的静态和动态荷载下抗永久变形能力和抗裂能力,扩大了WMA和HMA混合料在重复荷载下弹性变形区间,而且电弧炉钢渣和Sasobit温拌剂对沥青混合料抗动载变形能力具有协同增益效果.Electric arc furnace slag was used to replace 0%,25%,50%and 75%of limestone coarse aggregate,and 1.5%Sasobit warm mix modifier was added to prepare warm mix asphalt mixture.Then,static mechanical tests(Marshall and indirect tensile tests)and dynamic mechanical tests(dy-namic creep and elastic modulus tests)were used to explore the influence of EAF steel slag on the me-chanical properties of warm mix asphalt(WMA)and hot mix asphalt(HMA)with different content,and the influence of EAF steel slag and Sasobit warm mix agent on the static and dynamic mechanical properties of the mixture was analyzed by two-factor variance.The results show that EAF steel slag has excellent engineering aggregate characteristics and can be used in HMA and WMA mixture instead of coarse aggregate in large amount.With the increase of EAF steel slag content,the permanent de-formation resistance and crack resistance of asphalt mixture under static and dynamic loads can be im-proved,and the elastic deformation range of WMA and HMA mixture under repeated loads can be ex-panded.Moreover,EAF steel slag and Sasobit warm mix agent have synergistic effect on the dynamic deformation resistance of asphalt mixture.

关 键 词：沥青混合料 电弧炉钢渣 温拌沥青 力学性能 固废利用 

分 类 号：U416.2[交通运输工程—道路与铁道工程]