沥青混合料补强剂的路用性能研究及应用

摘要/Abstract

摘要： 为综合分析补强剂的路用性能,针对不同质量分数补强剂(0%、0.2%、0.35%、0.5%)的AC-13沥青混合料进行车辙试验、低温弯曲试验、浸水马歇尔试验、冻融劈裂试验及汉堡车辙试验(HWTD),测试其高温抗车辙性能、低温抗裂性能及水稳定性,然后从路用性能、成本、工法等角度与目前常用的某国产抗车辙剂A及SBS(热塑性丁苯橡胶)改性剂进行对比,最后通过试验路补充验证。结果表明,AC-13沥青混合料的路用性能随着补强剂掺量的提高呈非线性增长,推荐掺量为质量分数0.35%。与SBS改性剂相比,补强剂的掺加使沥青混合料具有更高的高温抗车辙性能,尽管低温抗裂性稍低,但成本更低,工法更简单;与抗车辙剂A相比,尽管沥青混合料成本稍高,但高温、低温和水稳定性均更优;试验路使用情况则表明,补强剂具有工法简单、使用方便、效果显著的优点。

关键词: 道路工程, 沥青混合料, 改性剂, 补强剂, 路用性能

Abstract: In order to comprehensively analyze the road performance of the reinforcing agent, the rutting test, low temperature bending test, submerged Marshall test, freeze-thaw splitting test and Hamburg rutting test (HWTD) were carried out on the AC-13 asphalt mixture with different mass fraction of reinforcing agent (0%, 0.2%, 0.35%, 0.5%), to test its high-temperature anti-rutting performance, low-temperature anti-cracking performance and water stability performance, and then compare it with the currently commonly used domestic anti-rutting agent A and SBS modifier from the perspectives of road performance, construction method and cost, and finally pass the test road supplementary verification. The test results show that the road performance of AC-13 asphalt mixture increases non-linearly with the increase of the dosage of reinforcing agent, and the recommended mass fraction is 0.35%. Compared with the SBS modifier,the asphalt mixture with reinforcing agent has a higher high-temperature anti-rutting performance. Although low-temperature anti-cracking performance is slightly lower, its cost is lower and the construction method is simpler. Compared with anti-rutting agent A, although the cost of asphalt mixture is slightly higher, its high temperature, low temperature and water stability are better. The use of test rode shows that the reinforcing agent has the advantages of simple construction method, convenient use and significant effect.

Key words: road engineering, asphalt mixture, modifier, reinforcing agent, road performance

中图分类号:

U414

刘合锋, 田周义, 许辉, 寇小舟, 韩森. 沥青混合料补强剂的路用性能研究及应用[J]. 硅酸盐通报, 2021, 40(2): 683-691.

LIU Hefeng, TIAN Zhouyi, XU Hui, KOU Xiaozhou, HAN Sen. Research and Application on Road Performance of Asphalt Mixture Reinforcing Agent[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(2): 683-691.

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