沥青混合料组成设计研究  

Design and Research on Bituminous Mixture Composition

作　　者：李腾云 

机构地区：[1]中铁三局集团有限公司,太原030001

出　　处：《铁道工程学报》2013年第7期80-84,94,共6页Journal of Railway Engineering Society

摘　　要：研究目的:本文主要从对沥青混合料组成设计要求、理论分析、具体工程实例几方面来开展研究,研究嵌挤紧密骨架型结构的粗细矿料级配较开级配与密集型悬浮级配的优异性。研究结论:(1)规范的级配范围修改趋向也证明S型密实嵌挤型级配在一定程度上已被普遍接受;(2)沥青混合料的组成设计应充分考虑原材料成本、混合料拌合生产成本、施工控制成本、后期养护成本,把沥青混合料的综合施工成本控制到最低;(3)在容许情况下,应尽可能把粗骨料的矿料间隙率设计的小一些,通过调整细骨料、填料调整混合料整体间隙率,优化混合料性能。(4)该研究成果适用于各等级公路工程、高速铁路基床表层热拌沥青混合料的生产。Research purposes： This paper researches the advantages of the coarse and fine aggregate gradation of embedded crowed skeleton structure compared with the intensive suspended gradation mainly in the areas of the design requirement of the bituminous mixture composition, the theoretical analysis and the concrete project application. Research conclusions：The revision trend of the normative gradation scope has proved that the S - shaped embedded crowed skeleton gradation has been generally accepted in a certain extent. To control the cost of bituminous mixture to the lowest level , the design of the bituminous mixture composition should fully consider the raw material cost, the production cost of the mixture materials, the construction cost and the later - stage maintenance cost. In the allowable circumstances, the coarse aggregate g VMA should be designed as small as possible, and the overall clearance rate of the mixture materials should be adjusted by adjusting fine aggregate and filling material so as to optimize the performance of mixture materials.

关 键 词：沥青混合料 组成设计 密实嵌挤型级配 

分 类 号：TU535[建筑科学—建筑技术科学]