【摘要】：隨著我國高等級公路建設規(guī)模持續(xù)提高，對道路建筑材料提出了更嚴格的要求。因此，如何提高瀝青混合料的路用性能，延長道路服役壽命，成為道路材料領域的研究重點。隨著我國汽車保有量的不斷增長，國內每年產生的廢舊橡膠輪胎數(shù)量呈加速增長趨勢。將廢舊輪胎顆粒用于瀝青改性，可以實現(xiàn)“黑色垃圾”的再利用，實現(xiàn)廢舊材料的再利用和環(huán)境保護，具備良好的經(jīng)濟和社會價值。 但已有研究成果表明橡膠顆粒的加入使得橡膠改性瀝青混合料的拌合及壓實溫度顯著提升，有害氣體的排放量增加，并且容易導致瀝青老化。如何降低橡膠改性瀝青混合料的拌合及壓實溫度，增強其適用性和經(jīng)濟型具備重要研究意義。 因此，本文在國內外已有研究基礎上，開展了如下工作： （1）對橡膠改性瀝青所采用的基質瀝青的基本性能進行了測試，確定了橡膠顆粒的篩分結果，對所采用的溫拌劑的有效成分進行闡述。 （2）詳細分析了剪切溫度、剪切時間、剪切速率、溶脹時間以及橡膠顆粒摻量等因素對橡膠改性瀝青針入度、軟化點以及延度等指標影響，確定了橡膠改性瀝青最優(yōu)制備工藝。制定了本文所采用的橡膠改性瀝青技術評價指標體系。 （3）選用AC-16C礦料級配，通過室內試驗確定了橡膠改性瀝青混合料的最佳油石比。車轍試驗動穩(wěn)定度測試結果表明，橡膠顆粒的摻入顯著改善了混合料的高溫穩(wěn)定性；低溫小梁彎曲試驗結果表明橡膠改性瀝青混合料的抗彎拉強度、破壞應變以及勁度模量均有所提升；浸水殘留馬歇爾穩(wěn)定度以及凍融劈裂抗拉強度比的測試結果顯示，橡膠改性瀝青混合料的水穩(wěn)定性能要優(yōu)于基質瀝青。 （4）針對溫拌橡膠瀝青及其混合料的試驗結果表明，，溫拌劑的加入可以改善橡膠改性瀝青的高溫穩(wěn)定性能、溫度敏感性和高溫粘度等，但對瀝青的低溫抗裂性能有所影響。路用性能試驗結果表明，溫拌劑的摻入可以顯著改善橡膠改性瀝青混合料的高溫穩(wěn)定性能，對低溫抗裂性會有不利影響，對水穩(wěn)定性的影響較小。
[Abstract]:Therefore, how to improve the pavement performance of asphalt mixture and prolong the service life of road has become the research focus in the field of road materials. With the increasing of automobile ownership in China, the number of waste rubber tires produced every year is increasing rapidly. The application of waste tire particles in asphalt modification can realize the reuse of "black garbage", reuse of waste materials and environmental protection, which has good economic and social value. However, the research results show that the addition of rubber particles can increase the mixing and compaction temperature of rubber modified asphalt mixture, increase the emission of harmful gases, and easily lead to asphalt aging. Therefore, on the basis of existing research at home and abroad, this paper has carried out the following work: (1) the basic properties of the base asphalt used in rubber modified asphalt are tested, and the screening results of rubber particles are determined. The effective components of the warm mix agent are described. (2) the factors such as shear temperature, shearing time, shear rate, swelling time and the amount of rubber particles on the penetration of rubber modified asphalt are analyzed in detail. The optimum preparation process of rubber modified asphalt was determined by the influence of softening point and ductility. The technical evaluation index system of rubber modified asphalt was established. (3) AC-16C aggregate gradation was selected to determine the optimum asphalt ratio of rubber modified asphalt mixture through laboratory test. The dynamic stability test results of rutting test show that the mixing of rubber particles improves the high temperature stability of the mixture remarkably, and the low temperature trabecular bending test results show that the flexural tensile strength of the rubber modified asphalt mixture is obviously improved. The failure strain and stiffness modulus are improved, and the test results of residual Marshall stability and the ratio of freeze-thaw splitting tensile strength show that, The water stability of rubber modified asphalt mixture is better than that of base asphalt. (4) the test results for warm rubber asphalt and its mixture show that the addition of warm mix agent can improve the high temperature stability of rubber modified asphalt. Temperature sensitivity and high temperature viscosity influence the low temperature cracking resistance of asphalt. The results of road performance test show that the high temperature stability of rubber modified asphalt mixture can be significantly improved with the addition of warm mixing agent, and the low temperature crack resistance will be adversely affected, and the water stability will be less affected.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U414

【參考文獻】

相關期刊論文 前10條

1 王嵐;常春清;邢永明;;膠粉改性瀝青混合料彎曲蠕變試驗研究[J];工程力學;2011年S1期

2 楊志峰,李美江,王旭東;廢舊橡膠粉在道路工程中應用的歷史和現(xiàn)狀[J];公路交通科技;2005年07期

3 黃文元;張隱西;;路面工程用橡膠瀝青的反應機理與進程控制[J];公路交通科技;2006年11期

4 張雅濤;吳奇峰;張爭奇;楊博;;Sasobit~汶溫拌橡膠瀝青性能評價分析[J];中外公路;2012年03期

5 曹衛(wèi)東,王超,韓恒春;廢舊輪胎在道路工程中的應用綜述[J];交通標準化;2005年06期

6 張鎮(zhèn);劉黎萍;湯文;;Evotherm溫拌瀝青混合料性能研究[J];建筑材料學報;2009年04期

7 王翼;劉黎萍;孫立軍;;溫度對溫拌橡膠瀝青混合料體積參數(shù)的影響[J];建筑材料學報;2013年03期

8 耿立濤;楊新龍;任瑞波;王立志;;穩(wěn)定型橡膠改性瀝青混合料動態(tài)模量預估[J];建筑材料學報;2013年04期

9 陳永云;孫文浩;馮逸;劉津銘;;Evotherm溫拌劑對橡膠瀝青老化性能的影響研究[J];華東交通大學學報;2013年06期

10 葉智剛,孔憲明,余劍英,魏連啟,蔣中林;橡膠粉改性瀝青的研究[J];武漢理工大學學報;2003年01期

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