[1]葛折圣,黄晓明,许国光.用弯曲应变能方法评价沥青混合料的低温抗裂性能[J].东南大学学报(自然科学版),2002,32(4):653-655.[doi:10.3969/j.issn.1001-0505.2002.04.026]
 Ge Zhesheng,Huang Xiaoming,Xu Guoguang.Evaluation of asphalt-mixture’s low-temperature anti-cracking performance by curvature strain energy method[J].Journal of Southeast University (Natural Science Edition),2002,32(4):653-655.[doi:10.3969/j.issn.1001-0505.2002.04.026]
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用弯曲应变能方法评价沥青混合料的低温抗裂性能()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
32
期数:
2002年第4期
页码:
653-655
栏目:
交通运输工程
出版日期:
2002-07-20

文章信息/Info

Title:
Evaluation of asphalt-mixture’s low-temperature anti-cracking performance by curvature strain energy method
作者:
葛折圣1 黄晓明1许国光2
1 东南大学交通学院,南京 210096; 2 安徽省港航路桥公司芜湖一分公司,芜湖 231001
Author(s):
Ge Zhesheng1 Huang Xiaoming1 Xu Guoguang2
1 Transportation College, Southeast University, Nanjing 210096, China
2 Anhui Harbor-Route Road-Bridge Company, Wuhu 231001, China
关键词:
沥青混合料 低温 抗裂性能 弯曲应变能 影响因素 灰关联
Keywords:
asphalt mixtures low temperature anti-cracking performance curvature strain energy effect factors grey relation degree
分类号:
U414.75
DOI:
10.3969/j.issn.1001-0505.2002.04.026
摘要:
通过对沥青混合料低温开裂机理的分析和对大量试验结果的总结,以弯曲应变能密度临界值为指标来评价沥青混合料的低温抗裂性能.首先,分析了沥青混合料低温开裂机理; 其次,在MTS810材料试验系统上进行了0 ℃下的沥青混合料的低温弯曲试验; 最后,用灰关联的方法分析了沥青混合料的弯拉强度、临界弯拉应变、油石质量比、表观密度及所用沥青的针入度等指标对混合料的应变能密度临界值的影响程度.研究表明,一般情况下,沥青混合料储存的弹性应变能越多,沥青混合料的低温抗裂性能就越好; 由于沥青混合料的应变能密度临界值指标是混合料临界弯拉应变和弯拉强度2个指标的综合,用它来评价沥青混合料的低温抗裂性能更加科学; 低温时沥青混合料的允许变形能力较差,提高混合料的允许变形能力可明显增强沥青路面的低温抗裂性能.
Abstract:
Through the analysis of cracking mechanism and test results, it was found that the curvature strain energy of asphalt mixture at low temperature could reflect its low-temperature anti-cracking performance. Asphalt mixtures were experimented with the curvature tests using MTS810 at 0 ℃. Relation degree between each factor and curvature strain energy density was analyzed by grey relation degree method. It is shown that the more strain energy of asphalt mixtures deposited, the better its anti-cracking performance at low temperature. The curvature strain energy method is more effective since it reflects asphalt mintures anti-cracking performance at low temperature accurately. Improving permissible distortion ability in asphalt mixture at low temperature would increase its anti-cracking performance.

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备注/Memo

备注/Memo:
基金项目: 高等学校博士学科点末项基金资助项目.
作者简介: 葛折圣(1974—),男,博士生; 黄晓明(联系人),男,博士,教授,博士生导师.
更新日期/Last Update: 2002-07-20