| 细集料对沥青混合料体积和高温特性的影响 |
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| 引用本文： | 陈华鑫,陈拴发,王秉纲.细集料对沥青混合料体积和高温特性的影响[J].武汉理工大学学报,2010(1). |
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| 作者姓名： | 陈华鑫 陈拴发 王秉纲 |
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| 作者单位： | 长安大学材料科学与工程学院;长安大学特殊地区公路工程教育部重点实验室; |
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| 基金项目： | 交通部联合攻关项目(2003-353-313-020) |
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| 摘 要： | 通过2种细集料(天然砂、机制砂)、2种级配(AC-13、Sup-12.5)沥青混合料的试验研究,分析了细集料类型和禁区对混合料体积指标和高温动稳定度的影响,结果表明机制砂更能有效提高混合料的高温性能,禁区的存在可有效限制细集料特别是天然砂的用量,以明显提高沥青混合料重载作用下混合料的动稳定度。而体积参数结果表明,Superpave设计方法中用固定空隙率4%标准来确定最佳沥青用量的方法是否合理有待进一步验证。
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| 关 键 词： | 沥青混合料 体积特性 动稳定度 禁区 Superpave设计方法 |
Effects of Fine Aggregate on Volume and High-temperature Properties of Asphalt Mixtures |
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| CHEN Hua-xin,CHEN Shuan-fa,WANG Bing-gang.Effects of Fine Aggregate on Volume and High-temperature Properties of Asphalt Mixtures[J].Journal of Wuhan University of Technology,2010(1). |
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| Authors: | CHEN Hua-xin CHEN Shuan-fa WANG Bing-gang |
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| Affiliation: | CHEN Hua-xin1,2,CHEN Shuan-fa1,WANG Bing-gang2 (1.School of Materials Science , Engineering,Chang\'an University,Xi\'an 710061,China,2.Key Laboratory for Special Area Highway Engineering of Ministry of Education,Xi\'an 710064,China) |
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| Abstract: | Based on the test results of asphalt mixtures composed of two types of fine aggregate(natural sand and manufactured sand) and two types of gradation (AC-13 and Sup-12.5),the effects of fine aggregate type and restricted zone on the volume characteristics and high temperature dynamic stability of asphalt mixture are discussed.The results show that manufactured sand can improve the high-temperature properties of asphalt mixture and restricted zone can limit quantify of fine aggregate,especially of nature sand... |
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| Keywords: | asphalt mixture volume characteristics dynamic stability restricted zone superpave design method |
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