文档介绍：河北工业大学
硕士学位论文
沥青路面反射裂缝的防治研究
姓名:胡镇卿
申请学位级别:硕士
专业:结构工程
指导教师:杨春风;张建文
20070901
防止沥青路面反射裂缝的研究
THE STUDY OF PREVENTION AND CURE AGAINST ASPHALT
PAVEMENT REFLECTION CRACK
ABSTRACT
The path reflection crack is one kind of disease phenomenon existed in the asphalt
monly, it is caused by the path grass roots crack. It is one kind of
extremely effective preventing and controlling measure, that the geotextile is parked
between asphalt surface and grass roots. The article based on the analysis of he
geotextile material performance 、the action mechanism and in the correlation material
request, take the Xing-qing highway k32+500 ~k35+700 as the test section, make the
technique study to the geotextile and glass fiber geogrid in the felted fastness 、filled
strong lay thickness 、construct measures 、quality control and so on divided two issues
separately. Through to two test sections under the different time, the different
environment service condition carries on the scene track observation and the
application effect, the economic cost contrast analysis, consider: the gridding and
geotextile are the effective 、the price being suitable essful method reduced the
asphalt surface reflection crack , they have the broad application value and the
promoted prospect in the major rebuilding of the Xingtai area path.
KEY WORDS: Asphalt pavement, Reflection crack , Geotextile, Prevention and cure
application, Technique study
ii
河北北工业大学工程硕士学位论文
第一章绪论
§§§1§111----1111 研究背景及工程应用价值
111-1---1111----11 研究背景
作为公路和和城市道路路面的结构构形式,沥青混凝土路面存在的突出问题:一是耐久性差。目前前国内
沥青混凝土路面较长的使用寿命命为 3~5 年,普遍短于设计使用寿命命(8~10 年)。而且因自然环境和和
运行状况不同,有的路面甚至 3~5 年即需要整体翻修改造。二是路面的早期破坏严重。有的新路面开
通后 2~3 年,长的 4~5 年就出现坑糟、开裂、车辙、抗滑性能不足等病害而需要维修。早期破坏的原
因,除设计和和施工方面的原因以外,主要外因是交通量增长过快、重载、超载严重,使道路长期处于超
负荷运转状态;主要内因是材材料(沥青、骨料等)性能差,导致路面抵抗拉应力力(如冷热、干湿的胀缩
应力力、荷载弯拉与疲劳劳应力力、反射裂缝的扩张应力力等)、剪剪应力力、渗水和和粘结老化化等能力力相对不足。由
上述原因产生的不良后