摘要
为了探究纳米材料对沥青性能的影响,采用三种纳米材料对沥青进行改性,通过常规试验和流变试验评价沥青的性能,同时进行混合料的车辙试验和低温抗裂性试验研究。结果表明,纳米Ca2O3对沥青的软化点、黏度和车辙因子提升最明显,其次为纳米黏土。纳米Zycosoil对沥青的车辙因子和动稳定度有所提升,但效果并不明显。纳米黏土和纳米Ca2O3对沥青混合料的低温劲度模量有所提升;纳米Zycosoil会严重降低沥青混合料的低温性能。
In order to study the influence of nanomaterials on the performance of asphalt,this study uses three kinds of nano-materials to modify asphalt,evaluates the performance change of asphalt through conventional performance test and rheological performance test,and analyzes the high-temperature behavior and lowtemperature crack resistance through mixture tests.The results show that the softening point,viscosity,and rutting index of asphalt are improved most obviously by nano-Ca_(2)O_(3) and nano-clay.Nano-Zycooil can improve the rutting index and dynamic stability of asphalt,but the influence was not obvious.Nano-clay and nano-Ca_(2)O_(3) can improve the low-temperature stiffness modulus of asphalt mixture.The nano-Zycooil will reduce the low-temperature performance of asphalt mixture.
作者
李增杰
童福坤
秦亮
LI Zengjie;TONG Fukun;QIN Liang(Shandong Provincial Communications Planning and Design Institute Group Co.,Ltd.,Shandong Jinan 250101 China;Tongyuan Design Group Co.,Ltd.,Shandong Jinan 250031 China;Anhui Provincial Transportation Planning,Design and Research Institute Co.,Ltd.,Anhui Hefei 230088 China)
关键词
道路工程
改性沥青
流变性能
纳米材料
road engineering
modified asphalt
rheological properties
nano-material
