| 再生沥青混合料疲劳性能试验研究 |
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| 引用本文： | 张志祥,吴建浩.再生沥青混合料疲劳性能试验研究[J].中国公路学报,2006,19(2):31-35. |
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| 作者姓名： | 张志祥 吴建浩 |
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| 作者单位： | 1. 东南大学,交通学院,江苏,南京,210096;江苏省交通科学研究院,江苏,南京,210017
2. 江苏省交通科学研究院,江苏,南京,210017 |
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| 摘 要： | 为了评价掺有再生沥青路面(RAP)材料的沥青混合料的疲劳性能,以及不同RAP材料用量对沥青混合料疲劳性能的影响,进行了室内再生沥青混合料疲劳试验研究。疲劳试验中采用了沥青路面表面层沥青混合料,选用了间接拉伸(IDT)强度试验和半圆弯曲(SCB)疲劳试验方法,进行了RAP材料质量分数分别为0%、10%、20%和30%的疲劳试验。试验结果表明:沥青混合料中RAP材料质量分数小于20%时,对沥青混合料疲劳性能影响不大,而RAP材料质量分数为30%时,疲劳性能明显下降。初步建议了表层沥青混合料合适的RAP材料质量分数不宜超过20%。
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| 关 键 词： | 道路工程 再生沥青混合料 试验研究 疲劳性能 表层沥青混合料 |
| 文章编号： | 1000-7372（2006）02-0030-05 |
| 收稿时间： | 2005-06-02 |
| 修稿时间： | 2005年6月2日 |
Experimental Research on Fatigue Characteristics of RAP Mixtures |
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| ZHANG Zhi-xiang,WU Jian-hao.Experimental Research on Fatigue Characteristics of RAP Mixtures[J].China Journal of Highway and Transport,2006,19(2):31-35. |
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| Authors: | ZHANG Zhi-xiang WU Jian-hao |
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| Institution: | 1. School of Transportation, Southeast University, Nanjing 210096, Jiangsu, China; 2. Transportation Research Institute of Jiangsu Province, Nanjing 210017, Jiangsu, China |
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| Abstract: | Authors presented the preliminary findings of a laboratory study,in which the fatigue characteristics of hot-mix asphalt mixtures containing recycled asphalt pavement(RAP) were evaluated.A typical surface mixture was evaluated at 0,10,20,and 30 percent of RAP content.Fatigue characteristics of mixtures were evaluated through indirect tensile strength,semi-circular bending(SCB).The result of tests shows that the influence of RAP material to the fatigue characteristics of mixture is smaller when the RAP content is lower than 20%,and the fatigue characteristics of RAP mixture drop down rapidly when the RAP content is 30%.To ensure the fatigue characteristics of RAP mixture,the proper RAP content in the surface mixture was recommended. |
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| Keywords: | road engineering RAP mixture experimental research fatigue characteristic surface asphalt mixture |
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