基于加速加載試驗的高性能表面處治的研究
發(fā)布時間:2018-06-24 07:20
本文選題:水性環(huán)氧樹脂 + 高性能表面處治; 參考:《華南理工大學》2015年碩士論文
【摘要】:近年來,我國高速公路建設發(fā)展迅速,加上交通量增長迅速、超載嚴重等,一些高等級公路出現(xiàn)較嚴重的早期損壞,大量已經(jīng)建成通車的公路進入維修養(yǎng)護期,高速公路養(yǎng)護工作成為了一個大的發(fā)展趨勢,而如何推廣經(jīng)濟、有效、便于操作的預防性養(yǎng)護方法成為了重要研究方向。本文針對改性乳化瀝青和表面處治技術研究現(xiàn)狀及存在的問題,通過添加外摻劑,研究了水性環(huán)氧樹脂改性乳化瀝青和巖瀝青改性瀝青的性能指標,然后分別將其與集料、水和填料等按一定配比拌合成高性能表面處治混合料,采用華南理工大學自主研發(fā)的 主驅動輪式路面表面功能材料加速加載試驗系統(tǒng)‖,加載輪通過摩擦力驅動試件輪(大輪)轉動,實現(xiàn)輪胎與路面間相互作用的真實模擬,評價路面表面高性能功能性加鋪材料的路用性能,進行高性能表面處治的研究。研究表明,添加水性環(huán)氧樹脂和巖瀝青,均提高了瀝青乳液的粘結性和高低溫性能,室內濕輪磨耗試驗及加速加載試驗表明,相對于常規(guī)微表處,高性能表面處治的耐磨耗性、抗滑性及抗水損壞性能均得到明顯的改善提高,可以大幅提高路面使用壽命,減緩路面性能衰減趨勢,具有良好的推廣應用前景。本文基于加速加載試驗系統(tǒng),提出了水性環(huán)氧樹脂改性乳化瀝青及巖瀝青改性瀝青表面處治材料設計與評價方法,為建立高性能表面處治的室內評價體系奠定了基礎。通過鋪筑試驗路,表明水性環(huán)氧樹脂是一種良好的瀝青改性材料,基于壽命周期費用分析原理,利用效益費用比方法,設定10年分析周期,對高性能表面處治進行了工程經(jīng)濟分析,得出水性環(huán)氧樹脂改性乳化瀝青表面處治技術具有較高的效益費用比,具有明顯的經(jīng)濟優(yōu)勢,此技術不僅具有很好的路用性能,而且在應用上具有可行性,是一種高性能的表面處治,綜合分析認為該技術可以在工程中推廣應用。本文是高速公路高性能表面處治技術的初步探索,研究成果對于改善提升現(xiàn)有的預防性養(yǎng)護評價措施,提高預防性養(yǎng)護的效果具有重要的指導推廣意義。
[Abstract]:In recent years, with the rapid development of highway construction in our country, and the rapid growth of traffic volume, serious overload and so on, some high-grade highways appear serious early damage, and a large number of highways that have been built and opened to traffic have entered the period of maintenance and maintenance. Highway maintenance has become a great trend of development, and how to promote economic, effective and easy to operate preventive maintenance method has become an important research direction. In this paper, the performance indexes of waterborne epoxy resin modified emulsified asphalt and rock asphalt modified asphalt were studied by adding admixture to the research status and existing problems of modified emulsified asphalt and surface treatment technology, and then the properties of waterborne epoxy resin modified emulsified asphalt and rock asphalt modified asphalt were compared with aggregate. The high performance surface treatment mixture is prepared by mixing water and fillers according to a certain proportion. The surface functional material of the main driving wheel pavement is developed independently by South China University of Technology, and the accelerated loading test system is adopted. The loading wheel drives the wheel (large wheel) rotation through friction to realize the real simulation of the interaction between the tire and the road surface, evaluate the pavement performance of the high performance functional overlay material on the pavement surface, and carry on the research of the high performance surface treatment. The results show that the bindability and high and low temperature properties of asphalt emulsion are improved by adding waterborne epoxy resin and rock asphalt. The indoor wet wheel wear test and accelerated loading test show that the wear resistance of high performance surface treatment is higher than that of conventional micro-surface. The anti-skid property and anti-water damage performance are obviously improved, which can greatly improve the pavement service life, slow down the road performance attenuation trend, and have a good prospect of popularization and application. Based on the accelerated loading test system, the design and evaluation methods of waterborne epoxy resin modified emulsified asphalt and rock asphalt modified asphalt surface treatment materials are presented in this paper, which lays a foundation for the establishment of an indoor evaluation system for high performance surface treatment. The experimental results show that waterborne epoxy resin is a good asphalt modified material. Based on the principle of life cycle cost analysis and using the method of ratio of benefit to cost, a 10-year analysis period is set up. The engineering economic analysis of high performance surface treatment is carried out. It is concluded that the surface treatment technology of waterborne epoxy resin modified emulsified asphalt has higher benefit / cost ratio and obvious economic advantage, and this technology not only has good road performance. It is a kind of high performance surface treatment. It is concluded that the technology can be popularized and applied in engineering. This paper is a preliminary exploration of the high performance surface treatment technology of expressway. The research results have important guiding significance for improving the existing preventive maintenance evaluation measures and improving the effect of preventive maintenance.
【學位授予單位】:華南理工大學
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:U418.6
【引證文獻】
相關期刊論文 前1條
1 陳永新;;瀝青混凝土路面施工的質量控制[J];江西建材;2016年08期
,本文編號:2060574
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