橡胶沥青混凝土在温州市政道路沥青路面修复工程中的应用和研究

发布时间：2018-10-17 13:20

【摘要】：沥青路面因其行驶舒适、噪声小、路面施工周期短等优势占据了我国当前道路路面90%以上的份额,但因沥青材料的感温特性,沥青路面易出现高温软化、低温开裂等病害,严重影响了沥青路面的使用寿命和通车能力。近些年橡胶沥青混合料因其具有良好的抵抗高温变形能力、抗反射裂缝能力和环保性能在国内外很多地方得到了成功应用。温州市也在部分市政道路进行了试验性摊铺,路用性能良好,但未进行过橡胶沥青混合料本土化的系统性研究。本文首先对温州正在使用的市政道路进行了病害调查、量化分析、析因归类得出了水损害是温州市政道路沥青路面损坏的主要形式。并针对性将水稳性检验作为后续橡胶沥青混合料设计考核的主要指标,增加了浸水车辙试验和改良粘附性试验两项考核。接下来对橡胶沥青生产配方进行了分析研究。对胶粉掺量、胶粉细度和基质沥青种类设计了三因素三水平的正交试验并进行了显著性检验,确定了三个因素对橡胶沥青质量的影响程度：胶粉掺量为特别显著；胶粉细度为一般影响；基质沥青种类为无影响。确定橡胶沥青配方最优比例为胶粉掺量25%,胶粉细度为80目。最后选取了AR-AC-13型和澳大利亚14型橡胶沥青混合料及温州市政道路常用的普通SMA-13沥青混合料做室内高温性能、水稳性能对比检验,确定AR-AC-13型橡胶沥青混合料适合在温州地区使用。并在温州市某市政道路试验摊铺,全过程进行了跟踪验证,路用效果良好。
[Abstract]:Asphalt pavement has occupied more than 90% of our country's current road surface because of its advantages of comfortable driving, low noise and short construction period. However, due to the temperature sensing characteristics of asphalt materials, asphalt pavement is prone to high temperature softening, low temperature cracking and other diseases. The service life and capacity of asphalt pavement are seriously affected. In recent years, rubber asphalt mixture has been successfully applied in many places at home and abroad because of its good resistance to high temperature deformation, anti-reflection crack ability and environmental performance. Wenzhou city has also carried on the experimental paving in some municipal roads, the road performance is good, but has not carried on the rubber asphalt mixture localization systematic research. In this paper, the diseases of the municipal roads in Wenzhou are investigated and analyzed quantitatively. It is concluded that water damage is the main form of asphalt pavement damage in Wenzhou municipal roads. The water stability test is regarded as the main index of the rubber asphalt mixture design test, and the two tests of immersion rutting test and improved adhesion test are added. Then the rubber asphalt production formula was analyzed and studied. The orthogonal test of three factors and three levels was designed for the quantity of rubber powder, the fineness of rubber powder and the type of base asphalt, and the significance test was carried out. The influence degree of three factors on the quality of rubber asphalt was determined: the content of rubber powder was especially significant; The fineness of rubber powder is general and the type of base asphalt has no effect. The optimum proportion of rubber asphalt formulation is 25% rubber powder and 80 mesh rubber powder fineness. In the end, AR-AC-13 type rubber asphalt mixture and Australia 14 rubber asphalt mixture and ordinary SMA-13 asphalt mixture commonly used in Wenzhou municipal road are selected for indoor high temperature performance and water stability test. It is determined that AR-AC-13 rubber asphalt mixture is suitable for use in Wenzhou area. The testing and spreading of a municipal road in Wenzhou City has been carried out and verified in the whole process, and the effect of road use is good.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U414

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