环境及荷重变化条件下的沥青混合料车辙试验研究

车辙的出现严重影响了路面的使用质量并威胁着交通安全。通过对同一批次沥青混合料进行车辙试验研究,系统分析了荷载、温度以及湿度等对沥青混合料动稳定度(DS)的影响规律,研究成果表明:随着荷载、温度、湿度的增加,动稳定度均逐渐减小,但不同因素对动稳定度的影响差别较大;在荷载增加的过程中,每个阶段均对动稳定度有显著影响,而温度上升和湿度增加对动稳定度的影响分别呈现先弱后强和先强后弱的趋势。温度、湿度、荷载等主要外部因素对沥青路面抗车辙性能有明显影响,是优化沥青混合料配合比设计必须考虑的问题。

Rutting Performance Test of Asphalt Mix Subjected to Different Environmental and Loading Conditions

The rutting of asphalt pavement seriously impacs the pavement performance,and also could cause the bad traffic accident.The research of rutting performance test about the same batch of the asphalt conc-rete has been done,and the effect of the loading,temperature and moisture on the dynamic stability（DS） has been discussed in this paper.The research results show that the dynamic stability decease with the increase of loading,temperature and moisture,but the different factors has significantly different effects on the dynamic stability,the loading increase influences the dynamic stability in every stage,the temperature increase slightly influ-ences the dynamic stability first and then more significantly,the moisture increase significantly influences the dynamic stability first and then more slightly.The results show that the loading,temperature and moisture have obvious influence on the asphalt pavement′s anti-rutting performance,they should be considered in asphalt mixture design.