隧道路面温拌沥青混合料磨耗层研究与应用
发布时间：2019-04-22 16:03
【摘要】：由于隧道路面所处的环境和使用条件的特殊性，决定了其路面不宜使用常规热拌沥青混合料来铺筑。本文结合郴州至宁远高速公路（郴宁高速公路）的虎形山隧道右洞，选用温拌NovaChip Type C型沥青混合料进行隧道路面磨耗层的研究。 通过对不同压实温度下两种温拌沥青混合料（DAT和Sasobit）的路用性能和结构设计参数进行试验研究，对热拌沥青混合料和温拌沥青混合料的路用性能进行了对比分析并较为系统的阐述了压实温度对两种温拌沥青混合料性能的影响，为NovaChip Type C型磨耗层在隧道路面的推广应用提供参考。 试验数据的分析及试验路段的检测表明：（1）当压实温度为135~165℃时，温拌NovaChip Type C型沥青混合料的高温稳定性、水稳定性、低温抗裂性均能满足技术规范要求，两种温拌剂的降温效果可以达到30℃；压实温度为135℃的温拌沥青混合料的路用性能与压实温度为165℃常规热拌沥青混合料的大体相当，高温性能优于热拌沥青混合料，水稳定性能略有减小，低温抗裂性能变化不明显。（2）随着压实温度从135℃提高到165℃，温拌NovaChip Type C型沥青混合料的高温稳定性明显增大，水稳定性变化不明显，且两者均表现出先增大后减小的趋势；低温抗裂性能有所增强，表现出先减小后增大的趋势。（3）随着压实温度从135℃提高到165℃，，温拌NovaChip Type C型沥青混合料的劈裂抗拉强度和抗压回弹模量变化幅度不大，均呈现出先增大后减少的趋势。（4）温拌技术的采用，大量减少了施工过程中CO2、SO2、CO、NOX以及粉尘的排放；大孔隙率NovaChip Type C型沥青混合料的采用，使得试验路段行车噪音降低4～8dB，降噪效果明显。
[Abstract]:Due to the particularity of the environment and operating conditions of the tunnel pavement, it is not suitable to use the conventional hot-mix asphalt mixture to lay the pavement. Based on the right tunnel of Huzhoushan Tunnel on Chenzhou-Ningyuan Expressway (Chenzhou-Ningyuan Expressway), this paper chooses warm mixed NovaChip Type C asphalt mixture to study the wear-up layer of tunnel pavement. The road performance and structural design parameters of two kinds of warm mix asphalt mixtures (DAT and Sasobit) at different compaction temperatures were studied experimentally. The road performance of hot mix asphalt mixture and warm mix asphalt mixture is compared and analyzed, and the influence of compaction temperature on the performance of two kinds of warm mix asphalt mixture is systematically expounded. It provides a reference for the popularization and application of NovaChip Type C wear layer in tunnel pavement. The analysis of the test data and the testing of the test sections show that: (1) when the compaction temperature is 135 鈩
本文编号：2462976
[Abstract]:Due to the particularity of the environment and operating conditions of the tunnel pavement, it is not suitable to use the conventional hot-mix asphalt mixture to lay the pavement. Based on the right tunnel of Huzhoushan Tunnel on Chenzhou-Ningyuan Expressway (Chenzhou-Ningyuan Expressway), this paper chooses warm mixed NovaChip Type C asphalt mixture to study the wear-up layer of tunnel pavement. The road performance and structural design parameters of two kinds of warm mix asphalt mixtures (DAT and Sasobit) at different compaction temperatures were studied experimentally. The road performance of hot mix asphalt mixture and warm mix asphalt mixture is compared and analyzed, and the influence of compaction temperature on the performance of two kinds of warm mix asphalt mixture is systematically expounded. It provides a reference for the popularization and application of NovaChip Type C wear layer in tunnel pavement. The analysis of the test data and the testing of the test sections show that: (1) when the compaction temperature is 135 鈩
本文编号：2462976
本文链接：https://www.wllwen.com/kejilunwen/jiaotonggongchenglunwen/2462976.html
