本文選題：環(huán)氧乳化瀝青　切入點(diǎn)：強(qiáng)度增長規(guī)律　出處：《長安大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：近年來,交通行業(yè)迅速發(fā)展的同時(shí)也出現(xiàn)了諸多問題,很多已建成通車的道路在遠(yuǎn)沒有到達(dá)設(shè)計(jì)年限就出現(xiàn)諸如開裂、車轍、松散剝落、坑槽等病害,因此,加大對(duì)現(xiàn)有路面的養(yǎng)護(hù)和維修具有非常重要的現(xiàn)實(shí)意義。以乳化瀝青作為結(jié)合料的路面修護(hù)技術(shù),具有常溫可拌和、易于施工、節(jié)能減排、延長施工季節(jié)等優(yōu)點(diǎn),但以乳化瀝青拌制的混合料粘結(jié)性較差、強(qiáng)度成型慢、早期強(qiáng)度低且成型強(qiáng)度相比于熱拌瀝青混合料也大打折扣,因此并沒有大范圍推廣使用。為彌補(bǔ)乳化瀝青的缺點(diǎn),本課題將水性環(huán)氧樹脂加入到乳化瀝青中,以期改善乳化瀝青粘結(jié)性差、強(qiáng)度低的缺點(diǎn),發(fā)揮水性環(huán)氧樹脂粘結(jié)力強(qiáng)、成型速度快且強(qiáng)度高的優(yōu)點(diǎn),從而制得一種快修補(bǔ)、低能耗的路面修補(bǔ)材料。課題選擇了兩種水性環(huán)氧樹脂及兩種固化劑進(jìn)行試驗(yàn)研究,通過測定水性環(huán)氧樹脂的環(huán)氧值和固體含量,計(jì)算得到固化劑理論最佳摻量;通過測定不同固化劑摻量下不同養(yǎng)生齡期的水性環(huán)氧砂漿抗壓強(qiáng)度,得到固化劑的最佳摻量;通過測定兩種水性環(huán)氧樹脂在最佳固化劑摻量條件下,水性環(huán)氧砂漿強(qiáng)度隨溫度變化的強(qiáng)度增長規(guī)律,得到溫度對(duì)于水性環(huán)氧樹脂固化速度的影響規(guī)律;通過水性環(huán)氧砂漿的抗彎拉試驗(yàn),得到兩種環(huán)氧樹脂在固化劑最佳摻量條件下的抗彎拉強(qiáng)度及應(yīng)力應(yīng)變曲線,得到兩種水性環(huán)氧樹脂的差異,即一種為柔性環(huán)氧,一種為剛性環(huán)氧。課題在分析乳化瀝青破乳機(jī)理及水性環(huán)氧樹脂固化機(jī)理的基礎(chǔ)上,結(jié)合熱拌瀝青混合料摩爾-庫倫理論,分析了環(huán)氧乳化瀝青混合料強(qiáng)度形成機(jī)理及強(qiáng)度形成特點(diǎn)。課題基于交通部陽離子課題協(xié)作組推薦的陽離子乳化瀝青混合料配合比設(shè)計(jì)方法,對(duì)環(huán)氧乳化瀝青混合料進(jìn)行了配合比設(shè)計(jì),并對(duì)混合料的擊實(shí)成型方法、養(yǎng)生條件進(jìn)行了試驗(yàn)研究,提出了用于道路坑槽修補(bǔ)的環(huán)氧乳化瀝青混合料初期強(qiáng)度和成型強(qiáng)度的評(píng)價(jià)方法;課題通過對(duì)比不同類型的混合料的車轍試驗(yàn)、低溫彎曲蠕變?cè)囼?yàn)、殘留穩(wěn)定度試驗(yàn)、凍融劈裂試驗(yàn)、粘附性試驗(yàn)結(jié)果,對(duì)混合料的高溫性能、低溫性能和水穩(wěn)定性進(jìn)行了驗(yàn)證分析。試驗(yàn)研究表明,以環(huán)氧乳化瀝青混合料作為路面修補(bǔ)材料,路用性能優(yōu)異,且有利于節(jié)能減排、提高路面服務(wù)水平,創(chuàng)造更大的經(jīng)濟(jì)效益和社會(huì)效益。
[Abstract]:In recent years, along with the rapid development of the transportation industry, there have also been many problems. Many roads that have been built and opened to traffic appear diseases such as cracking, rutting, loose spalling, potholes and so on, far from reaching the design time. It is of great practical significance to increase the maintenance and maintenance of the existing pavement. The pavement repair technology with emulsified asphalt as the binder has the advantages of mixing at room temperature, easy construction, energy saving and emission reduction, prolonging the construction season, etc. However, the mixture mixed with emulsified asphalt has poor adhesive property, slow strength forming, low early strength and lower formability compared with hot mix asphalt mixture, so it has not been widely used to make up for the shortcomings of emulsified asphalt. In this paper, waterborne epoxy resin is added to emulsified asphalt in order to improve the disadvantages of poor adhesion and low strength of emulsified asphalt, and give full play to the advantages of strong adhesion, fast molding speed and high strength of waterborne epoxy resin. In this paper, two kinds of waterborne epoxy resin and two curing agents are selected for experimental study. The optimum content of curing agent theory is calculated by measuring epoxy number and solid content of waterborne epoxy resin. By measuring the compressive strength of waterborne epoxy mortar with different curing agents and different curing ages, the optimum amount of curing agent was obtained, and the optimum content of two kinds of waterborne epoxy resin was determined under the optimum curing agent content. The influence of temperature on curing speed of waterborne epoxy mortar was obtained by increasing the strength of waterborne epoxy mortar with the change of temperature, and the flexural and tensile tests of waterborne epoxy mortar were carried out. The curves of flexural tensile strength and stress-strain of two kinds of epoxy resin under the optimum content of curing agent were obtained. The difference between two kinds of waterborne epoxy resin was obtained, that is, the flexible epoxy resin. One is rigid epoxy resin. Based on the analysis of emulsified asphalt demulsification mechanism and waterborne epoxy resin curing mechanism, combining with the molar Coulomb theory of hot mix asphalt mixture, The strength forming mechanism and strength forming characteristics of epoxy emulsified asphalt mixture are analyzed. The mixture ratio of epoxy emulsified asphalt mixture is designed, and the compaction molding method and health condition of the mixture are studied experimentally. The evaluation method of initial strength and forming strength of epoxy emulsified asphalt mixture used for road pothole repair is put forward, and the rutting test, low temperature bending creep test, residual stability test of different kinds of mixture are compared. The results of freeze-thaw splitting test and adhesion test are used to verify and analyze the high temperature performance, low temperature performance and water stability of the mixture. The experimental results show that the epoxy emulsified asphalt mixture is used as the pavement repair material, and the pavement performance is excellent. It is beneficial to save energy and reduce emission, improve pavement service level, and create more economic and social benefits.
【學(xué)位授予單位】：長安大學(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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