[1]彭勇,孙立军,石永久,等.沥青混合料抗剪强度的影响因素[J].东南大学学报(自然科学版),2007,37(2):330-333.[doi:10.3969/j.issn.1001-0505.2007.02.029]
　Peng Yong,Sun Lijun,Shi Yongjiu,et al.Influence factors of shear resistance of asphalt mixture[J].Journal of Southeast University (Natural Science Edition),2007,37(2):330-333.[doi:10.3969/j.issn.1001-0505.2007.02.029]
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沥青混合料抗剪强度的影响因素()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
37
期数:
2007年第2期
页码:
330-333
栏目:
交通运输工程
出版日期:
2007-03-20

文章信息/Info

Title:
Influence factors of shear resistance of asphalt mixture
作者:
彭勇1;  孙立军2;  石永久1;  王元清1
1 清华大学土木工程系, 北京 100084; 2 同济大学教育部道路与交通工程重点实验室, 上海 200092
Author(s):
Peng Yong1;  Sun Lijun2;  Shi Yongjiu1;  Wang Yuanqing1
1 Department of Civil Engineering, Tsinghua University, Beijing 100084, China
2 Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 200092, China
关键词:
沥青混合料;  剪强度;  影响因素;  单轴贯入试验
Keywords:
asphalt mixture;  shear resistance;  influence factor;  uniaxial penetrating test
分类号:
U414
DOI:
10.3969/j.issn.1001-0505.2007.02.029
摘要:
为了研究沥青混合料抗剪强度的影响因素,基于单轴贯入试验,在温度为60 ℃时,直接对集料级配、集料性质、沥青性质、含油量、空隙率以及均匀对沥青混合料抗剪强度的影响进行研究.研究结果表明:集料级配和公称最大集料粒径对沥青混合料抗剪强度有显著的影响; 沥青混合料抗剪强度受其集料中针片状含量的影响较大,集料中针片状含量增大,沥青混合料抗剪强度减小; 结合料的性质,特别是针入度、软化点和粘度对沥青混合料抗剪强度有较大的影响,随着针入度减小,软化点和粘度增大,沥青混合料抗剪强度增大; 含油量对沥青混合料抗剪强度有较大影响,随着油石比的增大,沥青混合料抗剪强度减小; 沥青混合料抗剪强度受其空隙率的影响较大,一般随着空隙率的增大,其抗剪强度减小; 沥青混合料均匀性与沥青混合料抗剪强度绝对数值间没有明显的关联,而与数值间的变异性有着很好的相关性.
Abstract:
Based on uniaxial penetrating test, the effects of aggregate gradation, aggregate physical properties, asphalt binder properties, asphalt content, air void and homogeneity on shear resistance of asphalt mixture were investigated directly at 60 ℃. The research results show that aggregate gradation and the nominal maximum aggregate size evidently influence the shear resistance of asphalt mixture; aggregate flakiness content influences the shear resistance of asphalt mixture, and with the increase of aggregate flakiness content the shear resistance of asphalt mixture decreases; asphalt binder properties, especially penetration, softening point and viscosity influence the shear resistance of asphalt mixture, and the latter increases with the decrease of penetration and the increase of softening point and viscosity; asphalt content influences shear resistance of asphalt mixture, and with the increase of binder/aggregate ratio the shear resistance of asphalt mixture decreases; air void influences shear resistance of asphalt mixture, and usually with the increase of air void the shear resistance of asphalt mixture decreases; homogeneity does not have a direct and obvious relationship with absolute value of shear resistance of asphalt mixture, but does with variation of shear resistance of asphalt mixture.

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备注/Memo

备注/Memo:
基金项目: 国家杰出青年科学基金资助项目(50325825)、中国博士后基金资助项目(20060390446).
作者简介: 彭勇(1976—),男,博士, ypeng@tsinghua.edu.cn.
更新日期/Last Update: 2007-03-20