摘要
泡沫沥青混合料是一种全新的道路材料 ,其有关特性尚不完全清楚。本文以泡沫沥青稳定 2种骨料 (新砂石料和回收料 )为基础 ,从材料的选取与级配的组成、沥青的最佳发泡条件、混合料拌和方法及养护方案等几个方面提出一种泡沫沥青混合料的研究方法 ,并对该材料的物理性质和强度特性进行了研究。结果表明泡沫沥青混合料密度较小 ,空隙率较大 ,其强度能够满足路面设计规范关于基层设计参数的要求。水泥作为填料对泡沫沥青混合料强度影响不大 。
As a new type of road material, the characteristics of foamed bitumen mixture are not understood fully. On the basis of two kinds of aggregates (Well graded clean gravels and recycled pavement material) treated with foamed bitumen, a research plan on foamed bitumen mix is put forward from the selection of material, gradation, the best foaming condition of bitumen mixing method, and curing means in this paper. According to this plan, the physical and strength characteristics of these materias are discussed The results indicate that the density of these two kinds of materials is lower, but thevoidiscontrary,andthestrengthofthematerialscanmeettherequirementsofroadbasein China The cement as one kind of fillers which hardly enhances the strength plays a great role in improving water resistance
出处
《公路》
北大核心
2004年第5期142-146,共5页
Highway
基金
上海市重点学科建设项目资助
