[1]吴正光,蒋德安,吕 阳,等.玄武岩纤维沥青混合料韧性研究及机理分析[J].南京理工大学学报(自然科学版),2015,39(04):500.
 Wu Zhengguang,Jiang Dean,Lv Yang,et al.Toughness research and mechanism analysis of basalt fiber asphalt mixtures[J].Journal of Nanjing University of Science and Technology,2015,39(04):500.
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玄武岩纤维沥青混合料韧性研究及机理分析
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
39卷
期数:
2015年04期
页码:
500
栏目:
出版日期:
2015-08-31

文章信息/Info

Title:
Toughness research and mechanism analysis of basalt fiber asphalt mixtures
作者:
吴正光1蒋德安1吕 阳1肖 鹏1丁泽民2余 晖2
1.扬州大学 建筑科学与工程学院,江苏 扬州 225127; 2.扬州市公路管理处,江苏 扬州 225002
Author(s):
Wu Zhengguang1Jiang Dean1Lv Yang1Xiao Peng1Ding Zemin2Yu Hui2
1.College of Civil Science and Engineering,Yangzhou University,Yangzhou 225127,China; 2.Yangzhou Highway Department,Yangzhou 225009,China
关键词:
玄武岩纤维 韧性 抗开裂性能 间接拉伸 微观观测 机理分析 马歇尔试件 沥青混合料
Keywords:
basalt fiber toughness anti-cracking performance indirect tensile tests microscopic observation mechanism research Marshall specimens asphalt mixture
分类号:
U414
摘要:
为研究玄武岩纤维对沥青混合料韧性的影响,选用AC-13C和SMA-13两种混合料,使用UTM-25试验机对添加纤维前后的马歇尔试件进行间接拉伸试验; 通过扫描电镜对纤维沥青混合料进行微观观测,分析纤维对混合料韧性的影响及增韧机理。试验结果表明:掺加玄武岩纤维对混合料的韧性指标有较大幅度提高,改善了混合料的抗开裂性能; 纤维在沥青混合料中形成三维网状结构,且与沥青间有良好的粘结能力,使得裂纹扩展时的能量释放率减少从而延缓裂缝的扩展。
Abstract:
In order to study the toughness of asphalt mixture affected by basalt fiber,AC-13C and SMA-13 are selected,and Marshall specimens are chosen to do the indirect stretching tests by using the UTM-25 test machine.Based on the microscopic observation of fiber asphalt mixture by using scanning electron microscopy,the influence and toughening mechanism of mixtures affected by fiber are analyzed.The results show that mixture's toughness index increases greatly by adding the basalt fiber,and also the anti-cracking performance of the mixtures are improved.Fiber forms a three-dimensional network structure in the asphalt mixture and has a good cohesive force with the asphalt,which makes the energy release rate be reduced and the extension of cracks be delayed.

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备注/Memo

备注/Memo:
收稿日期:2014-01-13 修回日期:2015-03-25
基金项目:江苏省交通科学研究计划项目(2012Y07-1)
作者简介:吴正光(1970-),男,讲师,主要研究方向:道路工程和材料工程,E-mail:zgwu@yzu.edu.cn。
引文格式:吴正光,蒋德安,吕阳,等.玄武岩纤维沥青混合料韧性研究及机理分析[J].南京理工大学学报,2015,39(4):500-505.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2015-08-31