| 基于粘弹性参数的沥青砂紫外光老化研究 |
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| 引用本文： | 郭金敏,杨国洲.基于粘弹性参数的沥青砂紫外光老化研究[J].中南公路工程,2014(3):83-85. |
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| 作者姓名： | 郭金敏 杨国洲 |
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| 作者单位： | 河南城建学院交通工程系,河南平顶山467000 |
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| 基金项目： | 国家自然科学基金青年项目（51108375） |
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| 摘 要： | 采用Burgers模型研究沥青砂的粘弹性力学行为,研究粘弹性参数在沥青砂紫外光老化中的变化,分析其变化规律,评价沥青砂紫外光老化。确定紫外光老化的试验方法和沥青砂试件制作方法,对紫外光老化的沥青砂试件进行单轴压缩蠕变试验得到应变和时间的蠕变曲线,拟合了Burgers模型的4参数。对粘弹性参数随老化程度的变化规律进行研究,根据粘弹性参数随老化程度的变化研究沥青砂性能的变化规律。对不同老化程度和相应的Burgers模型4参数进行拟合得到粘弹性参数和老化程度h之间的表达式J（h）,用该关系式表示沥青砂的老化程度。
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| 关 键 词： | 沥青砂 紫外光老化 粘弹性参数 蠕变试验 老化程度 |
Research on Ultraviolet Aging of Asphalt Mastic Based on Viscoelastic Parameters |
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| GUO Jinmin,YANG Guozhou.Research on Ultraviolet Aging of Asphalt Mastic Based on Viscoelastic Parameters[J].Central South Highway Engineering,2014(3):83-85. |
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| Authors: | GUO Jinmin YANG Guozhou |
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| Institution: | (Department of Traffic Engineering, Henan University of Urban Construction, Pingdingshan, Henan 467000, China) |
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| Abstract: | Burgers model were carried out to study the viscoelastic mechanics behavior of tar sands. By researching the change of viscoelastic parameters in the ultraviolet aging tar sands, analyze its change regulation and evaluate its aging extent. Determine ultraviolet aging test method and asphalt sand specimen producing method. Put the ultraviolet aging of asphalt sand specimen in uniaxial compression creep test to get the creep curves of strain and time, using the least squares fitting of the four parameters of Burgers model. Fitting the aging degree and the corresponding model parameters fitting, get the rela- tion between viscoelastic parameters and aging degree and get the expression ,/（h） between creep com- pliance ./and aging degree of, The aging of asphalt sand was exnressed with J （h）. |
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| Keywords: | asphalt mastic ultraviolet radiation aging viscoelastic parameters creep test agingindex |
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