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寒区沥青砼路面坑槽冷补材料路用性能研究

Research on Material Performance of Cold Patch Asphalt Mixture in Cold Area

【作者】 杨扬

【导师】 董希斌;

【作者基本信息】 东北林业大学 , 森林工程, 2007, 硕士

【摘要】 沥青砼路面在车辆及各种自然因素作用下,由于面层老化、基层反射裂缝、雨雪侵蚀、层间结合不好等一系列原因会造成坑槽、开裂等病害,并且随着时间的推移逐渐扩大。因此应该及时加以修补以恢复路面的平整性,保持城市道路的良好形象。坑槽及时修补,能有效地阻止坑槽面积扩大,延长路面使用寿命,有利于节约养护费用。目前,修补路面坑洞大都采用热拌沥青混合料,它对于地段集中工程量较大的路面维修是可行的,但对于地段分散工程量小的路面维修,不仅因数量太少而沥青拌和厂难以生产,而且施工单位对沥青混合料的保温和修补操作也感到不便,特别在冬季和雨水较多的春季,沥青路面的修补材料和修补技术仍然是有待研究的课题。冷补沥青混合料是事先将沥青混合料预拌好,用袋装好贮存起来,当发现路面上出现坑洞时,随时运到现场,进行路面修补,具有高效、节能、快速、及时等优点,可满足高等级公路修补的需要。因此,近年来,国内外纷纷开展了冷补沥青混合料的研究,取得了一定的成果,但其性能仍有待进一步考究。本论文根据冷补沥青材料的技术特点,分析了冷补材料的组成结构和强度形成机理。介绍了对于冷补沥青材料的选择及要求,并通过室内试验的不断调整,最后确定了冷补沥青混合料的配合比设计。通过冷补材料马歇尔稳定性与粘附性等室内试验,研究了冷补材料路用性能,各项性能均符合规范要求。同时,分析了影响冷补材料粘附性、强度、高温稳定性、水稳性、低温工作度等性能的主要因素,并在此基础上提出冷补沥青混合料的研究发展展望。

【Abstract】 The asphalt concrete pavement will be damaged by the vehicle and various natural factor function rain, because of facing the layer aging, the basic level glint crack, rain snow erosion, layer combine a series of reason of not good etc. Therefore that should take into the repair in time with the instauration the neat that road face, keep good image of the city road. Currently, repair the road to face the pit to adopt the heat to mix the asphalt admixture to anticipate mostly, it is convenient with bigger road of concentrated amount of engineering of district face maintain, but for district scatter small road of amount of engineering face maintain, special in the winter and rain waters more spring, the repair material and the repair techniques that asphalt road face are still topics that needs the research. Cold repair the asphalt admixture to anticipate to have asphalt mix with anticipate prepare mix good. advantage, can satisfy the demand of the high grade highway repair. Therefore, in recent years, the exhibition in succession at home and abroad cold repair the research that the asphalt admixture anticipate, obtain the certain result, but its function still treats further fashionable.This paper according to cold repair the technique characteristics of the asphalt material, analyze cold repair the material of constitute and strengths, and check up the performance of cold repair road surface. At the same time, analyzed to affect cold repair the material to glue the main factor of attach sex, strength, heat stability, the water steady, the low temperature work an etc. and put forward on this foundation cold repair the research development outlook that the asphalt admixture anticipate.

  • 【分类号】U414
  • 【被引频次】45
  • 【下载频次】535
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