| 掺外加剂的橡胶沥青SMA混合料设计方法 |
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| 引用本文： | 刘亚敏,韩森,徐鸥明.掺外加剂的橡胶沥青SMA混合料设计方法[J].长安大学学报(自然科学版),2011(3). |
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| 作者姓名： | 刘亚敏 韩森 徐鸥明 |
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| 作者单位： | 长安大学特殊地区公路工程教育部重点实验室;长安大学材料科学与工程学院; |
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| 基金项目： | 国家西部交通建设科技项目(2007318223018); 陕西省高速公路建设集团项目(KY08-01) |
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| 摘 要： | 为了研究橡胶沥青SMA混合料的配合比设计和路用性能,在普通SMA配合比设计方法的基础上,选择3种橡胶粉、1种基质沥青和4个间断级配,对橡胶沥青混合料配合比设计过程进行了详细的介绍;利用车辙试验和疲劳试验,分析了不同油石比、外加剂(如SBS、高模量耐久剂)等对混合料高温稳定性能和抗疲劳性能的影响。结果表明:与普通SMA混合料相比,橡胶沥青SMA混合料具有较小的矿粉用量和较大的目标空隙率;随着油石比的增大,橡胶沥青SMA混合料的高温稳定性能逐渐降低,抗疲劳性能则不断提高;车辙试验结果和疲劳试验结果呈现一致的规律,即油石比较大时,高模量耐久剂对混合料路用性能的提高作用更为明显。
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| 关 键 词： | 道路工程 橡胶沥青 SMA 路用性能 高模量耐久剂 |
Design method of crumb rubber modified SMA mixture using different additives |
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| LIU Ya-min,HAN Sen,XU Ou-ming.Design method of crumb rubber modified SMA mixture using different additives[J].JOurnal of Chang’an University:Natural Science Edition,2011(3). |
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| Authors: | LIU Ya-min HAN Sen XU Ou-ming |
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| Institution: | LIU Ya-min1,HAN Sen1,XU Ou-ming2(1.Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'an 710064,Shaanxi,China,2.School of Material Science and Engineering,Xi'an 710061,China) |
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| Abstract: | In order to study the design and performance of asphalt rubber SMA mixture,based on the design method of ordinary SMA mixture,three crumb rubbers,one base asphalt and four gap-graded gradations were selected for studying the design progress.Employing wheel tracking test and fatigue test,the effect of several factors,such as asphalt rubber content,SBS and high modulus additive,on high-temperature performance and fatigue resistance of mixture were analyzed.The results indicate that: compared to ordinary SMA m... |
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| Keywords: | road engineering asphalt rubber SMA road performance high modulus additive |
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