掺钢渣SMA-13沥青混合料配合比设计与路用性能评价  

Mix Design and Pavement Performance Evaluation of SMA-13 Steel Slag Asphalt Mixture

作　　者：宋军兴 蔡乾东 张有民 赵飞龙 SONG Junxing;CAI Qiandong;ZHANG Youmin;ZHAO Feilong(Gansu Road and Bridge Third Highway Engineering Co.,Ltd.,Lanzhou Gansu 730050,China;Shaanxi Dongdao Special Pavement Technology Co.,Ltd.,Xi'an Shaanxi 712000,China;Gansu Gerui Engineering Testing Co.,Ltd.,Lanzhou Gansu 730050,China)

机构地区：[1]甘肃路桥第三公路工程有限责任公司,甘肃兰州730050 [2]陕西东道特种路面科技有限公司,陕西西安712000 [3]甘肃格瑞工程检测有限公司,甘肃兰州730050

出　　处：《交通节能与环保》2024年第4期201-206,共6页Transport Energy Conservation & Environmental Protection

摘　　要：为探索钢渣在河西戈壁地区高速公路沥青路面功能性修复中的应用,本文开展了掺钢渣SMA-13沥青混合料配合比设计与路用性能对比试验,试验结果表明:当用钢渣替代同规格天然集料(总掺量为30%),颗粒木质纤维掺量为0.4%时,钢渣集料最佳油石比为6.2%;掺30%钢渣的集料与天然集料SMA-13相比,油石比增加0.2%,颗粒木质纤维掺量增加0.1%,沥青混合料析漏与飞散损失分别降低55%、30.3%,动稳定度增加18.2%,浸水残留稳定度增加2.5%,冻融劈裂强度比增加1.4%,路面芯样15℃劈裂强度增加9.4%,路面构造深度增加5.4%;沥青集料中掺加钢渣后,其功能性修复罩面的路用性能得到了全面改善。In order to explore the application of steel slags in the functional repair of asphalt pavement on highways in the Gobi region of Hexi,a comparative experimental analysis was conducted on the mixing design and pavement performance of SMA-13 asphalt mixture with steel slags.The results showed that with 30%of total amount of steel slags replacing the same specification,and the mixing ratio of granular cellulose fiber was 0.4%,the optimum proportion of the oil and stone was 6.2%.When 30%steel slag aggregate was added,its oil stone ratio increases by 0.2%compared to natural aggregate SMA-13.Content of granular cellulose fiber increased by 0.1%,the leakage and scattering losses of asphalt mixture decreased by 55%and 30.3%respectively,the dynamic stability increased by 18.2%,the residual stability after immersion increased by 2.5%,the freeze-thaw splitting strength ratio increased by 1.4%,the splitting strength of the pavement core sample at 15℃increased by 9.4%,and the depth of the pavement structure increased by 5.4%.The addition of steel slag comprehensively improved the road performance of functional repair covers.

关 键 词：沥青混合料 SMA-13 钢渣 配合比设计 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程]