Abstract: The feasibility of using municipal solid waste incinerated (MSWI) bottom ash powder (BAP) to replace limestone powder in different proportions for porous asphalt mixture (PAM) was discussed, and the influence of replacement rate on the properties of the mixture were studied through experiments. Marshall test method was used to design the mix proportion of conventional porous asphalt mixture. On this basis, the mix proportion design of porous slag asphalt mixture with different replacement rates of BAP (mass fractions of 25%, 50% and 100% respectively) was carried out, and the influence of BAP replacement rate on the optimal asphalt dosage was analyzed. Based on the laboratory test results, the effects of BAP replacement rate on the high temperature performance, low temperature performance, water stability and water permeability of the mixture were analyzed. Results indicate that the performance indexes of the designed porous slag asphalt mixture can meet the requirements of the corresponding specifications. The optimal asphalt content and water permeability of the mixture are highly affected by the replacement content of BAP; however, the high and low temperature performance and water stability of the mixture are limited affected.

Key words: highway engineering; porous asphalt mixture; bottom ash powder (BAP); pavement performance; permeability

摘要： 通过试验研究了采用生活垃圾焚烧炉渣粉料(BAP)以不同比例替代石灰岩矿粉用于多孔沥青混合料的可行性及替代率对混合料各项性能的影响；采用马歇尔试验方法对常规多孔沥青混合料进行了配合比设计，以此为基准使用不同替代率炉渣粉料(质量分数分别为25%、50%和100%)的多孔炉渣沥青混合料进行了配合比设计，并分析了炉渣粉料替代率对最佳沥青用量的影响；基于室内试验结果，分析了炉渣粉料替代率对混合料高温性能、低温性能、水稳定性和透水性能的影响。试验结果表明：所设计的多孔炉渣沥青混合料各项性能指标均能满足相应规范的要求；炉渣粉料替代率对混合料的最佳沥青用量和透水性能影响显著，对混合料的高低温性能和水稳定性影响非常有限。

关键词: 道路工程；多孔沥青混合料；炉渣粉料；路用性能；透水性能