本文選題：改性瀝青 + 增塑劑�。� 參考：《長(zhǎng)安大學(xué)》2015年碩士論文

【摘要】：增塑劑能降低被增塑體的玻璃化轉(zhuǎn)變溫度Tg,改變被增塑體的柔韌性和拉伸性,降低被增塑體的高溫黏度,增加韌性,提高抗沖擊能力,在塑料工業(yè)中被廣泛應(yīng)用,但其在用于改性道路瀝青方面的研究匱乏,屬于一種新型的道路瀝青改性材料,本論文采用增塑劑對(duì)瀝青進(jìn)行改性,以期取得良好的改性效果,滿足道路工作的需要。本論文研究中對(duì)增塑劑改性瀝青做其針入度、感溫性、低溫延度、低溫測(cè)力延度、黏韌性、軟化點(diǎn)、彈性恢復(fù)和TFOT后質(zhì)量損失、針入度、低溫延度、軟化點(diǎn)等相關(guān)試驗(yàn)。立足于全面了解增塑劑對(duì)瀝青性能影響,討論增塑劑這一新型改性劑對(duì)瀝青改性的可行性和應(yīng)用性,分析每種增塑劑和在每個(gè)摻量下瀝青改性后的性能,確定其合適的摻量,摻入天然巖瀝青,進(jìn)行雙摻改性,研究雙摻改性瀝青的性能。對(duì)改性瀝青混合料做其高溫車(chē)轍,低溫彎曲,浸水馬歇爾,凍融劈裂試驗(yàn)和老化前后肯塔堡飛散試驗(yàn),對(duì)混合料高溫穩(wěn)定性,低溫抗裂性,水穩(wěn)定性和耐久性進(jìn)行分析評(píng)價(jià),檢驗(yàn)增塑劑改性效果,推薦合適的增塑劑摻量,在增塑劑改性瀝青混合料的基礎(chǔ)上分別添加天然巖瀝青、橡維聯(lián)和抗車(chē)轍劑,對(duì)比研究改性瀝青混合料的性能。研究結(jié)果表明:增塑劑對(duì)瀝青的感溫性能、低溫性能、抗老化能力有明顯的改善作用,但其對(duì)瀝青的高溫性能有一定的消極影響。雙摻改性瀝青比單摻改性瀝青單一方面性能有所降低,但其互補(bǔ)了單摻改性的優(yōu)勢(shì),兼顧了瀝青的感溫性能和高低溫性能且具有良好的改性效果。增塑劑的改性效果在混合料路用性能中得到了很好的體現(xiàn),混合料低溫抗裂性、水穩(wěn)定性和耐久性都得到了提升,摻入天然瀝青、橡維聯(lián)或抗車(chē)轍劑后高溫性也能得到保證,顯示了良好的應(yīng)用前景。
[Abstract]:Plasticizer can reduce the glass transition temperature of plasticized body Tg, change the flexibility and tensile property of plasticized body, reduce the high temperature viscosity of plasticized body, increase toughness, improve impact resistance, and be widely used in plastic industry. However, the research on modified road asphalt is scarce, so it is a new kind of road asphalt modified material. In this paper, plasticizer is used to modify asphalt in order to obtain good modification effect and meet the needs of road work. In this paper, the penetration, temperature sensitivity, low temperature ductility, low temperature force ductility, viscosity toughness, softening point, elastic recovery, mass loss after TFOT, penetration, low temperature ductility and softening point of plasticizer modified asphalt were studied. Based on the comprehensive understanding of the effect of plasticizer on asphalt performance, the feasibility and application of plasticizer, a new modifier, for asphalt modification are discussed. The properties of each plasticizer and asphalt modified by each amount of plasticizer are analyzed, and the appropriate amount of plasticizer is determined. The properties of bitumen modified by natural rock asphalt were studied. The high temperature rutting, low temperature bending, immersion Marshall, freeze-thaw splitting test and Kentucky Flying test before and after aging are made to analyze and evaluate the high temperature stability, low temperature crack resistance, water stability and durability of the modified asphalt mixture. To test the modification effect of plasticizer, to recommend the appropriate amount of plasticizer, to add natural rock asphalt, rubber and anti-rutting agent respectively on the basis of plasticizer modified asphalt mixture, and to compare and study the performance of modified asphalt mixture. The results show that the plasticizer can improve the temperature sensitivity, low temperature performance and aging resistance of asphalt, but it has a negative effect on the high temperature performance of asphalt. The performance of double-doped modified asphalt is lower than that of single-doped modified asphalt, but it complements the advantages of single-admixture modification, and it has good performance of temperature sensing and high and low temperature. The modification effect of plasticizer is well reflected in the pavement performance of the mixture. The low temperature cracking resistance, water stability and durability of the mixture are all improved, and the high temperature properties of the mixture can also be guaranteed after the addition of natural asphalt, rubber or rutting resistant agent. It shows good application prospect.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：U414

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