基于GTM设计方法的钢渣沥青混凝土试验研究  

Experimental Study on Steel Slag Asphalt Concrete Based on GTM Design Method

作　　者：申铁军 SHEN Tie-jun

机构地区：[1]山西路桥建设集团有限公司,山西太原030006

出　　处：《内蒙古公路与运输》2022年第5期18-22,共5页Highways & Transportation in Inner Mongolia

摘　　要：为提高沥青混凝土上面层的力学性能和稳定性能,文章通过对山西省首个钢渣沥青混凝土工程应用的详细介绍,采用力学指标作为设计参数和以旋转压实的成型方式,提出了GTM设计方法对沥青混合料进行设计,同时得到SMA-13型改性沥青混合料目标配合比,以达到良好的路用性能。研究结果表明:相比于马歇尔试验方法,GTM法设计沥青混合料路用性能与体积参数均体现出新特点,沥青混合料试件的胶结料含量较低、密度较高,空隙率及矿料间隙率较小、饱和度较大;混合料的抗水破坏能力、抗高温车辙能力有所提高。In order to improve the mechanical properties and stability of the top layer of asphalt concrete,this paper introduces in detail the engineering application of the first steel slag asphalt concrete in Shanxi Province,uses the mechanical index as the design parameter and the forming method of rotary compaction,proposes the GTM design method to design the asphalt mixture,and obtains the target mix ratio of SMA-13 modified asphalt mixture to achieve good road performance.The results show that compared with the traditional Marshall test method,the volume parameters and road performance of asphalt mixture designed by GTM method show new characteristics:asphalt mixture specimens have lower binder content,higher density,smaller porosity and mineral interstitial ratio,and higher saturation.The ability of water damage resistance and high temperature rutting resistance of the mixture are improved.

关 键 词：道路路面 沥青混凝土 GTM方法 钢渣 

分 类 号：TU753.8[建筑科学—建筑技术科学]