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首页> 外文期刊>Journal of materials in civil engineering >Laboratory Investigation for the Road Performance of Asphalt Mixtures Modified by Rock Asphalt-Styrene Butadiene Rubber
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Laboratory Investigation for the Road Performance of Asphalt Mixtures Modified by Rock Asphalt-Styrene Butadiene Rubber

机译：岩沥青丁二烯橡胶改性沥青混合物道路性能实验室调查

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摘要

In this paper, styrene butadiene rubber (SBR) was utilized to improve the low-temperature performance of Buton-rock asphalt (BRA)-modified asphalt. Firstly, the optimum content of SBR modifier agent was determined by basic mechanical property tests, including penetration, ductility, and soft point tests. The comprehensive road performance, including high- and low-temperature performance, moisture resistance, and antifatigue performance at a low-temperature condition, of SBR-BRA-modified asphalt mixtures was evaluated by comparison with a base asphalt mixture, SBR-modified asphalt mixture, BRA-modified asphalt, and styrene-butadiene-styrene (SBS)-modified asphalt mixture. The fatigue test under the experimental temperature of -10°C and loading frequencies of 0.01, 0.1, 1, 5, and 10 Hz were designed to evaluate the antifatigue capacity of SBR-BRA-modified asphalt mixture under the low-temperature region. The S-N fatigue equation with the stress ratio related to loading rates was proposed to characterize the fatigue property of asphalt mixtures and reveal the different effects of loading frequency and materials on the fatigue property of asphalt mixtures. The tests results demonstrated that the SBR-BRA-modified asphalt has an equal road performance to SBS-modified asphalt. Analyzed by the S-N fatigue equation with the stress ratio related to loading rates, the fatigue test results under different loading frequencies could be fitted to a fatigue curve, and the fatigue curves of different asphalt mixtures exist at an angle and intersect at point (1,1).
机译：本文利用苯乙烯丁二烯橡胶（SBR）来改善Buton-岩石沥青（BRA）级沥青的低温性能。首先，通过基本机械性能试验，包括渗透，延展性和软点测试，确定SBR改性剂的最佳含量。通过与基础沥青混合物，SBR改性沥青混合物进行比较，评价SBR-BRA改性沥青混合物的综合性道路性能，包括高温和低温性能，耐湿性和抗脱毛性能，SBR-BRA改性沥青混合物评价，改性沥青和苯乙烯 - 丁二烯 - 苯乙烯（SBS）制浆沥青混合物。设计在-10℃和0.01,0.1,1,5和10Hz的实验温度下的疲劳试验旨在评估低温区域下SBR-BRA改性沥青混合物的抗衰叠能力。提出了具有与负载率相关的应力比的S-N疲劳方程，以表征沥青混合物的疲劳性能，揭示负载频率和材料对沥青混合物疲劳性能的不同效果。测试结果表明，SBR-BRA改性沥青对SBS改性沥青具有相同的道路性能。通过与装载速率相关的应力比分析，在不同装载频率下的疲劳试验结果可以安装在疲劳曲线上，并且不同沥青混合物的疲劳曲线以一定角度存在并在点处相交（1， 1）。

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  • 来源
    《Journal of materials in civil engineering》 |2021年第3期|04020504.1-04020504.10|共10页
  • 作者

    Chaochao Liu; Songtao Lv; Dongzhao Jin; Fangting Qu;

  • 作者单位

    National Engineering Laboratory of Highway Maintenance Technology Changsha Univ. of Science and Technology Hunan 410004 PR China;

    National Engineering Laboratory of Highway Maintenance Technology Changsha Univ. of Science and Technology Hunan 410004 PR China;

    Dept. of Civil and Environmental Engineering Michigan Technological Univ. 1400 Townsend Dr. Houghton MI 49931-1295;

    National Engineering Laboratory of Highway Maintenance Technology Changsha Univ. of Science and Technology Hunan 410004 PR China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Styrene butadiene rubber (SBR); Road performance; Buton-rock asphalt (BRA); Modified asphalt mixture;

    机译：苯乙烯丁二烯橡胶（SBR）;道路性能;Buton-rock沥青（胸罩）;改性沥青混合物;

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