本文關鍵詞： 瀝青路面水損壞 抗剝落劑 空隙率 改善施工　出處：《山東大學》2014年碩士論文　論文類型：學位論文

【摘要】：20世紀80年代末期我國大陸首條高速公路建成通車,以此為起點我國高速公路進入了一個高速發(fā)展的時期。從1998年,國家開始對交通行業(yè)進行統(tǒng)一部署,到2013年底,我國已建成通車的高速公路已經(jīng)超過十萬公里,位居世界第一,經(jīng)過短短二十幾年發(fā)展,我國的高速公路建設取得的成果達到西方發(fā)達國家?guī)资甑陌l(fā)展水平,發(fā)展之快,成就之大,舉世矚目。根據(jù)我國交通運輸“十二五”規(guī)劃,到2015年底,我國高等級公路通車總長度將會達到10.8萬公里,目前我國修建高速公路85%以上都是瀝青混凝土路面。然而,在取得巨大成就的同時,我國高速公路的水損壞現(xiàn)象也十分嚴重。 瀝青混凝土組合結(jié)構(gòu)是我國高速公路普遍使用的路面結(jié)構(gòu)類型,瀝青路面由于自身所不可避免的具有空隙的原因,使得水分得以相對比較容易的進入路面結(jié)構(gòu)。而瀝青混合料中的集料所具有的天然的親水性導致瀝青膜易被水取代。而失去粘結(jié)劑的瀝青混凝土就會分崩離析,不再擁有承受荷載的強度。從而使得瀝青路面在荷載的作用下不斷破壞,最終會導致路面結(jié)構(gòu)的整體破壞,使得道路失去其自身具有的社會和經(jīng)濟價值,引發(fā)嚴重的后果。因此,對于瀝青路面抵抗水損害的研究十分必要。國內(nèi)外的道路研究人員已經(jīng)進行了大量的卓有成效的研究,但大多集中于室內(nèi)試驗研究,沒有同具體建設項目結(jié)合起來。 本文以四川樂自高速公路建設項目為依托,結(jié)合國內(nèi)外研究人員的研究成果,從室內(nèi)試驗和現(xiàn)場施工兩方面入手對如何控制預防瀝青路面的水損害問題進行了研究。 首先,總結(jié)分析了國內(nèi)外對于瀝青路面水損害的研究成果,并以這些結(jié)論為基礎,分析了四川省已建成的高速公路出現(xiàn)水損害的成因,對四川以后的高速公路的新建與養(yǎng)護施工起到一定的參照作用。 其次,根據(jù)調(diào)查研究的樂自高速公路所屬的氣候條件與地理位置,設計并實施了室內(nèi)試驗,確定了樂自高速設計階段所需考慮的提高路面抵抗水損害能力的措施,即所需添加的抗剝落劑的種類以及添加量。并且確定了上面層的最佳空隙率,對路面的現(xiàn)場施工具有指導意義。 最后,作者根據(jù)多年來在四川進行高速公路瀝青路面的施工和項目管理的經(jīng)驗,結(jié)合當?shù)氐臍夂驐l件、交通條件以及路面的結(jié)構(gòu)組合情況,提出了改善施工的具體措施以及關鍵控制節(jié)點,最大限度的減少人為因素導致的路面的水損壞,具有良好的實用性和適用性。 本文既從理論上對瀝青路面水損害的發(fā)生進行了研究,又設計實施了大量的室內(nèi)試驗進行驗證,最后得以應用于具體的建設項目之上,具有理論指導實踐的清晰鏈條,對四川以后新建高速公路項目也具有具體的指導作用。
[Abstract]:In the end of 1980s, the first expressway in mainland China was built and opened to traffic, which is the starting point of China's expressway has entered a period of rapid development. Since 1998. By end of 2013, the highway that had been built and opened to traffic in our country had already exceeded 100,000 kilometers, ranking first in the world, and after 20 years of development. The achievements of highway construction in our country have reached the development level of the western developed countries for several decades. The rapid development and great achievements have attracted worldwide attention. According to the "12th Five-Year Plan" of transportation in China, by end of 2015. The total length of high grade highway in China will reach 108,000 kilometers. At present, more than 85% highway is asphalt concrete pavement in our country. However, great achievements have been made at the same time. The phenomenon of water damage on expressway in China is also very serious. Asphalt concrete composite structure is a common type of pavement structure used in expressway in China. The asphalt pavement has voids due to its own inevitable reasons. Water can relatively easily enter the pavement structure. The natural hydrophilicity of the aggregate in the asphalt mixture leads to the asphalt film being easily replaced by water. The asphalt concrete without binder will fall apart. No longer have the strength to bear the load, so that the asphalt pavement under the action of the continuous damage, eventually will lead to the overall destruction of the pavement structure, making the road has lost its own social and economic value. Therefore, it is necessary to study the asphalt pavement against water damage. Road researchers at home and abroad have carried out a large number of fruitful research, but mostly focused on indoor experiments. It has not been combined with specific construction projects. This paper is based on the Sichuan Lezi Expressway construction project, combined with the research results of domestic and foreign researchers. How to control and prevent water damage of asphalt pavement is studied from two aspects of indoor test and field construction. Firstly, this paper summarizes and analyzes the research results of asphalt pavement water damage at home and abroad, and based on these conclusions, analyzes the causes of water damage on the highway built in Sichuan Province. After Sichuan highway construction and maintenance play a certain reference role. Secondly, according to the climatic conditions and geographical location of Lezi Expressway, an indoor test was designed and implemented. The measures to improve the water damage resistance of the pavement are determined, that is, the type and amount of the anti-flaking agent needed to be added, and the optimum void ratio of the upper layer is determined. It is of guiding significance to the field construction of road surface. Finally, according to the experience of construction and project management of asphalt pavement in Sichuan for many years, combined with the local climate conditions, traffic conditions and pavement structure combination. The concrete measures to improve the construction and the key control nodes are put forward to minimize the water damage caused by human factors, which has good practicability and applicability. This paper not only studies the occurrence of asphalt pavement water damage theoretically, but also designs and implements a large number of indoor tests to verify it. Finally, it can be applied to specific construction projects. It has a clear chain of theoretical guidance and practice, and also has a specific guiding role for the new highway project after Sichuan.
【學位授予單位】：山東大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U416.217;U418.6

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