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| 沥青紫外线老化后性能衰减的非线性预测 | |
| 引用本文： | 郑南翔,纪小平,侯月琴.沥青紫外线老化后性能衰减的非线性预测[J].公路交通科技,2009,26(4). |
| 作者姓名： | 郑南翔 纪小平 侯月琴 |
| 作者单位： | 1. 长安大学,特殊地区公路工程教育部重点实验室,陕西,西安,710064 2. 长安大学,特殊地区公路工程教育部重点实验室,陕西,西安,710064;中交第一公路勘察设计研究院有限公司,陕西,西安,710075 3. 青海大学,建筑工程系,青海,西宁,810016 |
| 基金项目： | 交通部行业联合科技攻关项目 |
| 摘 要： | 建立了预测沥青因紫外线老化引起的性能衰减规律以及老化速率的非线性方程,并通过90#沥青紫外线老化试验验证了预测方程的可靠性.研究结果表明:非线性方程x(t)=(Lx0),1+(L-1)e-n]能精确预测沥青针入度、粘度、延度因紫外线老化引起的衰减规律,并能量化沥青老化的两个基本特征:老化速率以及最终老化程度;沥青针入度、粘度、延度的老化速率在开始时刻最大,后期随老化时间的延长而逐渐变小,最后达到平衡. |
| 关 键 词： | 道路工程 沥青老化 紫外线 老化速率 非线性预测 |
Nonlinear Prediction of Attenuation of Asphalt Performance after Ultraviolet Aging |
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| ZHENG Nanxiang,JI Xiaoping,HOU Yueqin.Nonlinear Prediction of Attenuation of Asphalt Performance after Ultraviolet Aging[J].Journal of Highway and Transportation Research and Development,2009,26(4). | |
| Authors: | ZHENG Nanxiang JI Xiaoping HOU Yueqin |
| Institution: | 1.Key Laboratory for Special Area Highway Engineering of Ministry of Education;Chang'an University;Xi'an Shaanxi 710064;China;2.The First Highway Survey & Design Institute of China;Xi'an Shaanxi 710075;3.Department of Civil Engineering of Qinghai University;Xining Qinghai 810016;China |
| Abstract: | The characteristics attenuation regularities of penetration,viscosity and ductility of asphalt after ultraviolet aging were discussed.The related aging nonlinear equations were was developed,which reliability was validated by ultraviolet aging test of asphalt No.90.The results of research show that(1) the aging equation x(t)=(Lx0)/1+(L-1)e-rt] can predict the attenuation regularities of penetration,viscosity and ductility caused by ultraviolet aging and can quantify the aging rate and the ultimate degree;(... |
| Keywords: | road engineering asphalt aging ultraviolet aging rate nonlinear prediction |
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