温拌阻燃沥青混合料优化设计与性能评价

杨锐¹，周启伟²，王磊³，袁明园²

1.安徽交通职业技术学院土木工程系，安徽 合肥  230000；2.招商局重庆交通科研设计院有限公司，重庆  400000；

3.安徽交控道路养护有限公司，安徽 合肥  230000

摘要：为开发阻燃性能较好、适用于隧道路面的沥青混合料，基于正交试验设计，确定温拌剂、阻燃剂的最佳质量分数，设计温拌阻燃沥青混合料并进行路用性能评价；试验确定温拌阻燃沥青混合料最佳拌和温度与压实温度，并评价其路用性能、抗疲劳性能及阻燃性能。结果表明：温拌阻燃沥青混合料的最佳拌和温度为150 ℃，最佳压实温度为140 ℃；其水稳定性及抗疲劳性能均得到显著改善，高温、低温性能得到一定提高；从燃烧时间、质量损失水平及残留稳定度等参数分析表明，温拌阻燃沥青混合料可增加路面材料的阻燃性能，提高火灾事故后道路材料的基本路用性能，可为温拌阻燃沥青混合料在隧道工程中的应用提供参考。

关键词：道路工程；温拌阻燃沥青；路用性能；阻燃性能

Optimization design and performance evaluation of flame-retardant warm-mix asphalt mixture

YANG Rui¹, ZHOU Qiwei², WANG Lei³, YUAN Mingyuan²

1. Department of Civil Engineering, Anhui Communications Vocational and Technical College, Hefei 230000, China;

2.China Merchants Chongqing Communications Technology Research and Design Institute Co., Ltd., Chongqing 400000, China;

3. Anhui Traffic Control Road Maintenance Co., Ltd., Hefei 230000, China

Abstract: To develop asphalt mixtures with good flame-retardant performance for tunnel pavement, an orthogonal experimental design is conducted to determine the optimal mass fractions of warm mix additives and flame retardants. The warm-mix flame-retardant asphalt mixture is designed and evaluated for its road performance. The optimal mixing and compaction temperatures for the warm mix flame-retardant asphalt mixture are determined through experiment, and its road performance, fatigue resistance, and flame retardation are evaluated. The results show that the optimal mixing temperature is 150 ℃, and the optimal compaction temperature is 140 ℃. The water stability and fatigue resistance of the warm mix flame-retardant asphalt mixture are significantly improved, and its performance at high and low temperatures is also enhanced. Analysis of parameters such as combustion time, mass loss, and residual stability indicate that the warm mix flame-retardant asphalt mixture can increase the flame retardation of road materials, and improve the basic road performance of materials after fire accidents, and provide data foundation for the application of warm mix flame-retardant asphalt mixtures in tunnel projects.

Keywords: road engineering; warm-mix flame-retardant asphalt; road performance; flame retardancy