本文選題：橡膠瀝青　切入點：混合料　出處：《重慶交通大學》2015年碩士論文　論文類型：學位論文

【摘要】：隨著國民經(jīng)濟的發(fā)展,對于道路的使用性能要求越來越高,這直接促使瀝青混合料路面的發(fā)展,早年修建的瀝青路面早期破壞嚴重,隨著運輸行業(yè)的發(fā)展,汽車軸載逐漸增大,而且在我國國情下貨車超載現(xiàn)象嚴重,這進而加速瀝青路面的破壞。近年隨著國內(nèi)外瀝青混合料的研究深入,開始關注這一破壞形式。目前,橡膠粉因其對瀝青有良好的改性作用而且廢舊橡膠對環(huán)境的危害很大,將廢舊橡膠回收再利用,這將很好地解決這一問題。本文主要研究在車轍試驗中不同輪壓下橡膠瀝青混合料中水穩(wěn)定性表現(xiàn),選出三種混合料級配,其中有:TYPE-B、AC-13、SMA-13,它們包含了半開級配、連續(xù)級配以及間斷級配。本文采用基本的車轍試驗為原型,設計了非浸水車轍試驗和浸水車轍試驗,在試驗室規(guī)定的標準輪壓(0.7MPa)基礎上,依次提高輪壓到0.8MPa、0.9MPa、1.0MPa進行試驗,以此考察不同級配在輪壓增加的情況下動穩(wěn)定度的變化情況,最終評價不同橡膠混合料的水穩(wěn)定性能。對各級配非浸水與浸水條件動穩(wěn)定度結果進行回歸分析,建立回歸方程、確定回歸系數(shù),以此確定動穩(wěn)定度隨輪壓變化趨勢。并對比各輪壓下不同級配的非浸水與浸水動穩(wěn)定度,提出了殘留動穩(wěn)定度的概念,比較分析各級配動穩(wěn)定度結果,隨輪壓的增加,各混合料的抗車轍能力變差的越快。TYPE-B路用性能及水穩(wěn)定性好,是比較理想的橡膠瀝青混合料;AC-13動穩(wěn)定度表現(xiàn)較好,但在實際試驗中表面紋路差、構造深度很小,綜合路面使用性能較差;相較于TYPE-B和AC-13,由于SMA-13未添加高粘彈添加劑,其動穩(wěn)定度小,高溫穩(wěn)定差,水穩(wěn)定性要差得多。
[Abstract]:With the development of the national economy, the performance of the road is more and more demanding, which directly promotes the development of the asphalt mixture pavement. The early damage of the asphalt pavement built in the early years is serious. With the development of the transportation industry, the axle load of the vehicle increases gradually. Moreover, under the situation of our country, the phenomenon of truck overloading is serious, which accelerates the damage of asphalt pavement. In recent years, with the deep research of asphalt mixture at home and abroad, we begin to pay attention to this damage form. At present, Because rubber powder has good modification effect on asphalt and waste rubber is harmful to environment, waste rubber is recycled and reused. This will solve this problem very well. This paper mainly studies the water stability performance of rubber asphalt mixture under different wheel pressure in rutting test, and selects three kinds of mixture gradation, among them are: 1 TYPE-BU AC-13 SMA-13, which includes semi-open gradation. Continuous grading and discontinuous gradation. Based on the basic rutting test, the non-immersion rutting test and the immersion rutting test are designed in this paper. On the basis of the standard wheel pressure of 0.7MPa prescribed in the laboratory, the wheel pressure is increased successively to 0.8 MPA and 0.9 MPA to 1.0 MPA. The change of dynamic stability of different gradation under the condition of increasing wheel pressure was investigated, and the water stability performance of different rubber mixtures was evaluated finally. The regression analysis was carried out on the results of dynamic stability under the conditions of non-immersion and flooding, and the regression equation was established. The regression coefficient is determined to determine the variation trend of dynamic stability with wheel pressure. The concept of residual dynamic stability is put forward by comparing the non-immersion and immersion dynamic stability of different grades under different wheel pressures, and the results of distribution stability at all levels are compared and analyzed. With the increase of wheel pressure, the faster the rutting resistance of each mixture becomes worse. TYPE-B has better road performance and water stability. It is an ideal rubber asphalt mixture with better dynamic stability. However, in the actual test, the surface grain is poor and the structure depth is very small. Compared with TYPE-B and AC-13, compared with TYPE-B and AC-13, SMA-13 has less dynamic stability, lower high temperature stability and worse water stability.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U414

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本文編號：1586678