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砂当量变化对微表处混合料性能的影响分析
引用本文:王世杰,王丽荣,丁剑霆.砂当量变化对微表处混合料性能的影响分析[J].森林工程,2009,25(4):74-76.
作者姓名:王世杰  王丽荣  丁剑霆
作者单位:黑龙江工程学院,哈尔滨,150050
基金项目:黑龙江省建设厅重点科技攻关项目资助 
摘    要:细集料是组成沥青混合料的主要矿质材料之一,细集料的洁净程度直接关系到沥青与集料的裹附程度和粘聚力,显著影响沥青混合料的路用性能。通过室内实验,探讨砂当量变化对微表处混合料拌和时间和乳化沥青用量,以及成型后性能的影响。试验表明,砂当量高的集料可以减少乳化沥青用量,降低生产成本;施工时乳化剂品种的选择应以其用量对砂当量变化及拌和时间不敏感为原则;砂当量高的混合料成型后耐磨能力以及抗水损害能力明显提高。

关 键 词:砂当量  微表处  拌和时间  湿轮磨耗值  乳化剂用量

Effects of Sand Equivalent Changes on Micro-surfacing Mixture Performance
Wang Shijie,Wang Lirong,Ding Jianting.Effects of Sand Equivalent Changes on Micro-surfacing Mixture Performance[J].Forest Engineering,2009,25(4):74-76.
Authors:Wang Shijie  Wang Lirong  Ding Jianting
Institution:(Heilongjiang Institute of Technology, Harbin 150050)
Abstract:As one of the major mineral materials in bitumen mixture, fine aggregate has remarkable influence on bitumen mixture's pavement pefformance, because its clean degree is directly related to the adhesion effect and binding force between bi-tumen and aggregate. Through indoor experiments, the influence of sand equivalent changes on the mixing time of micro-surfacing mixture, the emulsifier dosage and the performance after shaped was discussed. The result showed less emulsified asphalt was used to reduce the production cost ff the sand equivalent in aggregate is high, and the principle that the emulsifier dosage is not sensitive to sand equivalent changes and mixing time should be followed when choosing emulsifier types in construction. The wear-resisting ability and anti-water ability were improved significantly after the mixture with high sand equivalent was formed.
Keywords:sand equivalent  micro-surfacing  mixing time  WTAT value  emulsifier dosage
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