摘要
水损害是沥青混凝土路面常见病害之一。该研究首先总结了水对沥青混凝土路面的主要破坏形式;在此基础上,考察了调整沥青胶浆组分对沥青混凝土抗水损害性能的改善效果。结果表明,采用消石灰替代石灰石矿粉和采用SBS改性沥青替代基质沥青均可以改善沥青混凝土的水稳定性,建议将消石灰的掺量控制在60%左右(取代石灰石矿粉的体积比例)。对于水稳定性要求较高的沥青混凝土路面,可考虑将消石灰和SBS改性沥青结合起来使用。
Moisture damage is one of common diseases of asphalt pavement.This study firstly summarized the main damage forms of moisture on asphalt pavement.Based on it,the improvement of the composition adjustment of asphalt mastic on the moisture damage resistance of asphalt concrete was then investigated.Results showed that the moisture stability of asphalt concrete can be improved by using hydrated lime to replace limestone powder or using SBS modified asphalt to replace base asphalt.It was suggested that the amount of hydrated lime should be controlled at about 60%(replacing the volume proportion of limestone powder),and the SBS modified asphalt can also be used for pavement with high requirement on moisture stability.For the asphalt pavement with high requirement on the moisture stability,the simultaneous use of hydrated lime and SBS modified asphalt can be considered.
作者
周云华
ZHOU Yun-hua(China Gezhouba Group Testing Co,Ltd,Yichang 443002,China)
出处
《建材世界》
2022年第3期17-19,共3页
The World of Building Materials
