沥青路面双层摊铺与传统摊铺等效厚度转换试验研究

发布时间：2018-07-20 17:18

【摘要】：双层摊铺压实质量控制较传统摊铺更为重要,为了建立在同等压实功下沥青路面双层摊铺与传统摊铺厚度等效转换关系,以中面层AC-20为研究对象通过室内正交试验设计借助非标准马歇尔试验分析了温度、厚度对混合料压实度的影响程度并进行对比分析,在柯布-道格拉斯方程基础上应用麦夸特(Marquardt)方法并借助DPS数据处理系统获得混合料压实度与温度、厚度之间的定量关系。试验分析结果表明:混合料温度对压实度的影响比厚度对压实度影响大,保证了在一定范围内的双层摊铺混合料压实度能够满足规范要求;混合料密度同温度、厚度存在定量关系ρ=2.162T0.119H-0.113;依据混合料密度同温度、厚度定量关系得到,双层摊铺10 cm沥青混凝土相当于传统摊铺8.8 cm。
[Abstract]:The quality control of double-layer paving is more important than that of traditional paving. In order to establish the equivalent conversion relationship between double-layer paving and traditional paving thickness of asphalt pavement under the same compaction work, Taking AC-20 as the research object, the influence of temperature and thickness on the compaction degree of the mixture is analyzed and compared with the non-standard Marshall test through the laboratory orthogonal test design. Based on Cobb-Douglas equation, the quantitative relationship between compaction degree and temperature and thickness of mixture was obtained by using Marquardt method and DPS data processing system. The experimental results show that the influence of mixture temperature on compactness is greater than that of thickness, which ensures that the compactness of double-layer paving mixture in a certain range can meet the requirements of the specification, and the mixture density is the same as the temperature. There is a quantitative relationship between thickness 蟻 _ (2.162T) _ (0.119H-0.113), and according to the mixture density and temperature, the quantitative relationship between thickness and thickness is obtained. The 10cm asphalt concrete with double-layer spreading is equivalent to the traditional paving (8.8 cm).
【作者单位】：长安大学公路学院;上海市政工程设计研究总院(集团)第七设计院;陕西省交通建设集团;
【基金】：陕西省交通运输厅科技项目(09-03R)
【分类号】：U416.217

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