泡沫沥青温拌沥青混合料配合比设计方法及路用性能研究

摘要

foam asphalt warm mix asphalt mixture is a new material,new energy efficient and envi-ronmentally friendly pavement engineering .draw lessons fromsubstantial warm foam asphalt technolo-gyproject,this article Carry on warm mix asphalt foam mix design method,while the warm mix asphalt foam road performance with the same type of hot mix asphalt were compared.Test results show that:rec-ommend to“4% void method”to determine the mixing temperature of foam warm asphalt mixture,Mar-shall method of foam temperature on the optimum proportion of asphalt mixture,The road performance verification,foam warm mix asphalt mixture has better high temperature stability,but its water stability and low temperature crack resistance is poor,the fatigue performance foam warm mix asphalt mixture is 90% of the same type asphalt mixture.Comprehensive road performance of both foam asphalt warm as-phalt mixture and hot mix asphalt are relatively close.%泡沫沥青温拌沥青混合料是一种全新的节能环保型路面新材料，借鉴实体工程采用的温拌泡沫沥青技术，开展温拌泡沫沥青混合料配合比设计方法研究，同时将温拌泡沫沥青混合料的路用性能与同类型热拌沥青混合料进行了对比。试验结果表明：推荐采用“4％空隙率法”确定泡沫沥青温拌混合料的拌合温度，以马歇尔法确定泡沫温拌沥青混合料的最佳油石比，经路用性能验证，泡沫温拌沥青混合料具有较好的高温稳定性，但其水稳定性和低温抗裂性稍差，泡沫温拌沥青混合料疲劳性能为同类型沥青混合料的90％，泡沫温拌和热拌沥青混合料的综合路用性能比较接近。