基于GTM设计方法的钢渣沥青混凝土试验研究  

Test of steel slag asphalt concrete based on GTM design method

作　　者：张智聪 申铁军 ZHANG Zhicong;SHEN Tiejun(Shanxi Road&Bridge No.1 Engineering Co.,Ltd.,Shanxi Taiyuan 030006 China;Shanxi Road&Bridge Construction Group Co.,Ltd.,Shanxi Taiyuan 030006 China)

机构地区：[1]山西路桥第一工程有限公司,山西太原030006 [2]山西路桥建设集团有限公司,山西太原030006

出　　处：《山东交通科技》2023年第1期70-72,共3页

摘　　要：为提高沥青混凝土上面层的力学性能及稳定性能,提出GTM设计方法对沥青混合料进行设计,设计参数采用力学指标,成型采用旋转压实方式,得到SMA-13型改性沥青混合料目标配合比并应用于山西省首个钢渣沥青混凝土路面工程,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于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。混合料的抗水破坏的能力、抗高温车辙能力、抗疲劳能力及低温抗裂能力都有所提高。In order to improve the mechanical properties and stability of asphalt concrete upper layer,GTM design method is proposed to design the asphalt mixture,the design parameters are mechanical indexes,and the forming method is rotary compaction.The target mix ratio of SMA-13 modified asphalt mixture is obtained and applied to the first steel slag asphalt concrete pavement project in Shanxi province.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.The asphalt mixture specimen density is higher,the cement content is lower,the saturation is larger,the voidage and the mineral clearance ratio is smaller.The ability of water damage resistance,high temperature rutting resistance,fatigue resistance and low temperature crack resistance of the mixture are improved.

关 键 词：道路路面 沥青混凝土 GTM方法 钢渣 试验 

分 类 号：U414[交通运输工程—道路与铁道工程]