Influence of Asphalt Species on Fatigue Performance of Gussasphalt Concrete

doi:10.3969 /j.issn.1674-0696.2013.05.11

Journal of Chongqing Jiaotong University(Natural Science) ›› 2013, Vol. 32 ›› Issue (5): 950-952.DOI: 10.3969 /j.issn.1674-0696.2013.05.11

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Influence of Asphalt Species on Fatigue Performance of Gussasphalt Concrete

Hao Zengheng^1,2

1. School of Civil Engineering ＆ Architecture，Chongqing Jiaotong University，Chongqing 400074，China; 2. Chongqing Communication Ｒesearch ＆ Design Institute Co. Ltd. ，Chongqing 400060，China

Received:2012-03-08 Revised:2012-05-30 Online:2013-10-15 Published:2014-10-27

沥青品种对浇筑式沥青混凝土疲劳性能的影响

郝增恒^1,2

1. 重庆交通大学土木建筑学院，重庆400074; 2. 招商局重庆交通科研设计院有限公司，重庆400060

作者简介:郝增恒( 1978—) ，男，河北石家庄人，副研究员，博士，主要从事道路材料、桥面铺装方面的研究。E-mail: 55978839@ qq． com。
基金资助:
中国博士后科学基金项目( 2011M501396)

Abstract

Abstract: The influence of 3 kinds of asphalt species on the fatigue performance of gussasphalt concrete was studied by means of four-point fatigue bending test under strain-controlled mode． The results show that different asphalt species influence the fatigue performance of gussasphalt concrete significantly; the fatigue performance of gussasphalt concrete is excellent when SK70 and lake asphalt compound modified asphalt and ZX-30 modified asphalt are chosen． Different asphalt species significantly influence the visco-elasticity of gussasphalt concrete as well; the bigger lag angles of gussasphalt concrete are，the better fatigue life is．

Key words: gussasphalt concrete, asphalt species, stiffness modulus, fatigue performance, lag angle

摘要： 根据应变控制模式下的四点小梁弯曲疲劳试验方法，研究了3 种不同改性沥青对浇筑式沥青混合料疲劳的影响。结果显示: 不同的改性沥青对浇筑式沥青混合料的疲劳性能影响非常显著，SK70 基质沥青与湖沥青复合改性的沥青和ZX-30 改性沥青成型的浇筑式沥青混凝土具有优异的抗疲劳性能，不同改性沥青对浇筑式沥青混合料的粘弹性能影响较大，浇筑式沥青混合料的滞后角愈大则疲劳寿命愈好。

关键词: 浇筑式沥青混合料, 沥青品种, 劲度模量, 疲劳性能, 滞后角

CLC Number:

U 416.217

Hao Zengheng. Influence of Asphalt Species on Fatigue Performance of Gussasphalt Concrete[J]. Journal of Chongqing Jiaotong University(Natural Science), 2013, 32(5): 950-952.

郝增恒. 沥青品种对浇筑式沥青混凝土疲劳性能的影响[J]. 重庆交通大学学报（自然科学版）, 2013, 32(5): 950-952.

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Influence of Asphalt Species on Fatigue Performance of Gussasphalt Concrete

沥青品种对浇筑式沥青混凝土疲劳性能的影响

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