LASTIKA-13改性沥青混合料级配设计及性能的研究

发布时间：2018-01-13 01:28

本文关键词：LASTIKA-13改性沥青混合料级配设计及性能的研究　出处：《长沙理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：伴随着我国高速公路的迅猛发展,交通量增长迅速,车辆超载现象严重,这些都对高速公路的路面建设带来了严峻的挑战。而沥青路面在实际的使用过程中,出现各种路面病害,大部分使用寿命都未达到设计年限,普遍有早期损坏现象。为此,我们作为路面工程研究者,从路面材料自身的问题出发,提出了一种以Superflex改性沥青为结合料,采用LASTIKA-13级配的新型路面材料。本文先是按照试验规程检验各原材料的技术性能,结果均满足技术要求。然后通过均匀试验、逐级填充试验、正交试验进行LASTIKA-13级配优化设计,根据优化的得到的级配,进行配合比设计得出最适合依托项目的LASTIKA-13。再次,将LASTIKA-13与采用Superflex改性的AC-13-Ⅰ及采用SBS的AC-13-Ⅱ两种的改性沥青混合料进行对比,一起进行高温车辙、低温弯曲、浸水马歇尔与冻融劈裂、中点加载小梁弯曲等试验。通过三种温度下的动稳定度综合评价其高温性能。根据抗弯拉强度、极限应变以及对低温下温度变化的敏感性等指标评价低温性能。水稳定性则以马歇尔残留稳定度和冻融劈裂强度比来评价。耐疲劳等性能通过不同应力比和所对应的疲劳寿命之间的关系来反应。试验表明,LASTIKA-13改性沥青混合料具有良好的高温稳定性、低温抗裂性以及抗水损的能力,还具备较好的疲劳性能,能有效延长道路使用寿命,同时还兼顾一定的经济效益。本文主要以湘乡水府庙旅游连接线工程为依托,经过一系列现场试验后,确定了LASTIKA-13的生产配合比,于项目的试验段进行试验路的铺筑。试验路铺筑后及时进行了跟进检测,通过对试验路进行平整度、弯沉、渗水抗滑以及钻芯取样的检测,检测表明LASTIKA-13改性沥青混合料的路用性能十分良好。为此,本文为Superflex沥青混合料在今后相关工程中的应用提供新的参考及帮助。
[Abstract]:Along with the rapid development of Expressway in China, the rapid growth of traffic volume, vehicle overloading phenomenon, which are on the highway pavement construction has brought severe challenges. And the asphalt pavement in the actual use of the process, the emergence of various pavement diseases, most of life has not reached the design period, generally early damage phenomenon. Therefore, we as the pavement engineering research, starting from the pavement material of its own problems, put forward a kind of Superflex modified asphalt, new pavement materials using LASTIKA-13 gradation. This paper first is in accordance with the test procedures for the inspection of technical performance of the raw materials, the results meet the technical requirements. Then by uniform test, step filling test orthogonal test was carried out, LASTIKA-13 gradation design, according to the result of optimized gradation, mix design the most suitable depending on the project LASTIKA-13. Second, LASTIKA-13 and AC-13- with Superflex modified by SBS I and AC-13- II two kinds of modified asphalt mixture are compared, with high temperature rutting, low temperature bending, Marshall immersion and freeze-thaw, loading point bending beam test. Through three kinds of temperature dynamic stability evaluation the high temperature performance. According to the flexural strength, ultimate strain and low temperature performance of temperature change under low temperature sensitivity index. The water stability in residual Marshall stability and evaluation of freeze thaw splitting strength ratio. Fatigue through the different relationship between the stress ratio and the fatigue life of the reaction. The test shows that LASTIKA-13 modified asphalt mixture has good high-temperature stability, low-temperature cracking resistance and anti water damage ability, but also has good fatigue performance, can effectively extend the life of the road, at the same time Taking into account the certain economic efficiency. This article mainly takes Xiangxiang Shuifumiao tourism connecting line project, through a series of field tests, to determine the LASTIKA-13 production mix, the project test section in the test road. The pavement of test road after timely follow-up detection, based on the test road roughness deflection, seepage, anti sliding and detection of drill core sampling, testing showed that LASTIKA-13 modified asphalt mixture road performance is very good. Therefore, this paper provides reference and help for the new application of Superflex asphalt mixture in the future project.

【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U414

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