| 蠕变试验下的橡胶沥青粘弹性能研究 |
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| 引用本文： | 张得文,;冯小伟.蠕变试验下的橡胶沥青粘弹性能研究[J].中南公路工程,2014(4):82-85. |
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| 作者姓名： | 张得文 ;冯小伟 |
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| 作者单位： | [1]甘肃省交通科学研究院有限公司,甘肃兰州730050; [2]甘肃省道路材料工程实验室,甘肃兰州730050 |
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| 基金项目： | 甘肃省科技计划资助项目（1305PCYA024） |
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| 摘 要： | 通过弯曲梁流变试验（BBR）得到的蠕变劲度指标,是表征沥青胶结料在低温条件下变形和拉应力的可靠指标。通过不同低温条件下得到的蠕变劲度模量,推导橡胶沥青在BBR试验中的蠕变规律,并建立模型对结果进行模拟分析,最后通过理论模型与试验结果的对比,认为所建立的本构模型能够较准确的反映橡胶沥青的粘弹性能,具有非常明确的物理意义。
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| 关 键 词： | 橡胶沥青 BBR试验 蠕变劲度 粘弹性能 本构模型 |
Viscoelastic Research on Asphalt Rubber Based on Creep Test |
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| Institution: | ZHANG Dewen, FENG Xiaowei(1. Gansu Communications Research Institute Co. , LTD, Lanzhou, Gansu 730050, China; 2. Gansu Provincial Engineering Laboratory for Road Materials, Lanzhou, Gansu 730050, China) |
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| Abstract: | The creep stiffness index which obtained by bending beam rheological test（BBR） is a reliable indicator to characterize deformation and tensile stress at low temperature of asphalt binder. Based on the creep stiffnessmodulus that obtained under different low temperature test, this paper mainly wants to derived rubber asphalt creep law in BBR tests, and modelling constitutive model to analyze the test results. Finally, by comparing the experimental results and theoretical model that established the constitutive model can accurately reflect the viscoelastic properties of rubber asphalt, has a very clear physical meaning. |
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| Keywords: | asphalt rubber BBT test creep stiffness viscoelastic properties constitutive model |
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