本文選題：溫拌　切入點(diǎn)：抗車轍　出處：《東南大學(xué)》2015年碩士論文

【摘要】：進(jìn)入21世紀(jì)后,環(huán)境污染和能源危機(jī)已然成為全球共識(shí),2014年11月APEC會(huì)議上,中美發(fā)布聯(lián)合聲明,中國(guó)政府承諾2030年左右碳排放達(dá)到峰值,節(jié)能減排勢(shì)在必行,綠色低碳成為各行業(yè)發(fā)展的共同主題。與此同時(shí),隨著交通量的增長(zhǎng),交通渠化以及超載現(xiàn)象的日益加劇,瀝青路面出現(xiàn)了諸多早期病害,如開裂、變形、水損害等,其中高溫車轍病害影響程度較為嚴(yán)重,危及行車安全,并縮短道路的使用壽命。在新的時(shí)代背景下,如何在減少能源消耗、降低對(duì)環(huán)境污染的基礎(chǔ)上,建設(shè)具有優(yōu)良使用性能,尤其是具有顯著高溫抗車轍性能的瀝青路面成為眾多道路建設(shè)者們的夙愿。本文依托與蘇州拓博琳新材料科技有限公司的產(chǎn)學(xué)研項(xiàng)目“SG復(fù)合溫拌抗車轍改性劑的應(yīng)用研究”,嘗試將瀝青混合料溫拌技術(shù)與抗車轍劑技術(shù)進(jìn)行有機(jī)結(jié)合,并進(jìn)行一復(fù)合的室內(nèi)試驗(yàn)研究,研究的主要內(nèi)容包括以下三個(gè)方面：首先是對(duì)溫拌改性瀝青的性能研究,從常規(guī)指標(biāo)(針入度、軟化點(diǎn)、延度等)、高溫流變特性、低溫流變特性三個(gè)角度分析溫拌改性瀝青的高溫、低溫特性,通過與基質(zhì)瀝青性能的對(duì)比得出改性劑對(duì)瀝青性能的影響。此外,通過等黏溫度原則與等體積原則等方法來探究SG溫拌抗車轍改性瀝青混合料的合理拌和與壓實(shí)溫度；其次是對(duì)SG溫拌抗車轍改性瀝青混合料的路用性能研究,選用具有代表性的四類級(jí)配(SMA-13、AC-13、AC-20、SUP-20)作為試驗(yàn)級(jí)配進(jìn)行改性劑的路用性能研究,通過車轍試驗(yàn)、低溫小梁彎曲試驗(yàn)、浸水馬歇爾試驗(yàn)、凍融劈裂試驗(yàn)、小梁四點(diǎn)彎曲疲勞試驗(yàn)來分析改性瀝青混合料的高溫穩(wěn)定性能、低溫抗裂性能、水穩(wěn)定性能以及抗疲勞性能,并以基質(zhì)瀝青混合料的性能作為參照,綜合評(píng)價(jià)SG復(fù)合溫拌抗車轍改性劑對(duì)瀝青混合料的改性效果；最后是對(duì)SG改性后瀝青路面車轍的預(yù)估與分析,利用ABAQUS有限元軟件,建立典型路面結(jié)構(gòu)模型,基于改進(jìn)的Theta-4本構(gòu)模型進(jìn)行瀝青路面在不同改性劑摻量下的車轍預(yù)估與分析,為SG復(fù)合溫拌抗車轍改性劑的工程應(yīng)用提供理論指導(dǎo)。研究結(jié)果表明：SG-A組份能夠提升瀝青的高溫抗變形性能以及抗熱老化性能,而對(duì)低溫性能有一定的負(fù)面影響；與此同時(shí),在SG兩個(gè)組份的影響下,瀝青混合料的高溫穩(wěn)定性、低溫抗裂性、水穩(wěn)定性均有不同程度的提高,而基于常應(yīng)變的疲勞性能試驗(yàn)反映出改性后的瀝青混合料疲勞壽命有所下降；此外,基于車轍預(yù)估的改性劑應(yīng)用研究給出了不同路面結(jié)構(gòu)中不同層位對(duì)改性劑摻量的敏感性,并針對(duì)不同交通量,給出了與之對(duì)應(yīng)的改性劑添加方案。通過本文的研究,能夠?qū)G復(fù)合溫拌抗車轍改性劑的改性效果有一個(gè)較為全面的認(rèn)知,希望通過一復(fù)合有序的試驗(yàn)理論研究,為其將來的工程應(yīng)用提供指導(dǎo),并為溫拌抗車轍改性劑的研究發(fā)展提供有力的幫助。
[Abstract]:After entering the 21st century, environmental pollution and energy crisis have become a global consensus. At the APEC meeting in November 2014, China and the United States issued a joint statement that the Chinese government promised that carbon emissions will peak around 2030, and energy conservation and emission reduction is imperative.Green low carbon has become the common theme of the development of various industries.At the same time, with the increase of traffic volume, traffic channelization and overloading, many early diseases appear in asphalt pavement, such as cracking, deformation, water damage and so on.Endangers traffic safety and shortens the service life of roads.On the basis of reducing energy consumption and environmental pollution, how to build asphalt pavement with excellent performance of high temperature and rutting resistance has become the long-cherished wish of many road builders.Based on the project of "Application of SG compound warm mix Anti-rutting modifier" and Suzhou Tuoborin New material Technology Co., Ltd., this paper tries to combine asphalt mixture warm mix technology with anti-rutting agent technology organically.The main contents of the study include the following three aspects: firstly, the performance of warm mixed modified asphalt was studied, from the conventional indexes (penetration, softening point, ductility, etc.), high temperature rheological properties,The low temperature and low temperature properties of the modified asphalt were analyzed from three aspects of low temperature rheological properties. The influence of modifier on the asphalt performance was obtained by comparing the properties of the modified asphalt with that of the base asphalt.In addition, the reasonable mixing and compaction temperature of SG warm mix and rutting modified asphalt mixture are investigated by means of equal viscosity temperature principle and equal volume principle. Secondly, the road performance of SG warm mix anti-rutting modified asphalt mixture is studied.SMA-13AC-13AC-20 (SUP-20) is selected as the test gradation to study the road performance of modifier. Through rutting test, low temperature trabecular bending test, immersion Marshall test, freeze-thaw splitting test, the road performance of the modifier is studied by means of rutting test, low temperature trabecular bending test, immersion Marshall test and freeze-thaw splitting test.Trabecular four-point bending fatigue test is used to analyze the high temperature stability, low temperature crack resistance, water stability and fatigue resistance of modified asphalt mixture.The modification effect of SG compound warm mix anti-rutting modifier on asphalt mixture is evaluated synthetically, and the rut prediction and analysis of SG modified asphalt pavement are finished, and the typical pavement structure model is established by using ABAQUS finite element software.Based on the improved Theta-4 constitutive model, the rut prediction and analysis of asphalt pavement with different modifiers are carried out, which provides theoretical guidance for the engineering application of SG compound warm mix rutting modifier.The results show that the fraction of SG-A can improve the high temperature deformation resistance and thermal aging resistance of asphalt, but has a certain negative effect on the low temperature performance. At the same time, under the influence of SG two components, the asphalt mixture has high temperature stability.The low temperature crack resistance and water stability are improved to some extent, and the fatigue performance test based on constant strain shows that the fatigue life of the modified asphalt mixture has decreased.Based on the application of rut prediction, the sensitivity of different layers in different pavement structures to the amount of modifier is given, and the corresponding scheme of adding modifier is given according to different traffic volume.Through the research in this paper, we can have a comprehensive understanding of the modification effect of SG compound warm mix anti-rutting modifier, and hope to provide guidance for its future engineering application through a compound and ordered experimental theory study.It also provides powerful help for the research and development of warm-mixed anti-rutting modifier.
【學(xué)位授予單位】：東南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U414

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