本文選題：瀝青路面 + 裂縫修補(bǔ)材料��； 參考：《合肥工業(yè)大學(xué)》2015年碩士論文

【摘要】：我國(guó)的大部分瀝青路面己進(jìn)入了養(yǎng)護(hù)維修的高峰期,其中裂縫是瀝青路面最主要的一種破損形式。路面一旦出現(xiàn)了裂縫,不但破壞路面結(jié)構(gòu)的完整性,還大大的降低了行車(chē)舒適性和安全性,縮短路面的使用壽命,因此需要對(duì)裂縫進(jìn)行及時(shí)修補(bǔ)。目前的修補(bǔ)材料,在性能和價(jià)格都存在著不足,需要研發(fā)新型的高性?xún)r(jià)比的修補(bǔ)材料。本文通過(guò)自制的高固含量(70.13%)的乳化瀝青和水泥為基材配制了一種新型復(fù)合型修補(bǔ)材料。研究了不同聚灰比(0-0.2)和油灰比(0-1)下,聚合物改性水泥乳化瀝青膠漿的抗壓強(qiáng)度、彎曲抗折強(qiáng)度和變形等性能,并分析了不同配比下膠漿的單軸壓縮應(yīng)力應(yīng)變曲線特征；研究了不同配合比下復(fù)合材料作為裂縫修補(bǔ)材料的彈性恢復(fù)率、粘結(jié)強(qiáng)度、高溫流動(dòng)性等路用性能；優(yōu)化了適用于裂縫修補(bǔ)材料的配比,并將最優(yōu)配合比下的復(fù)合材料與市售裂縫修補(bǔ)材料進(jìn)行性能比較；通過(guò)微觀實(shí)驗(yàn)觀察復(fù)合材料的微觀結(jié)構(gòu)與各項(xiàng)性能之間的聯(lián)系。研究結(jié)果表明：隨著油灰比的增大,抗壓強(qiáng)度、彎曲抗折強(qiáng)度、收縮都是不斷減小,稠度為同水灰比下在一定范圍內(nèi)是增長(zhǎng)的,隨著聚灰比的增大,抗壓強(qiáng)度在油灰比小的時(shí)候是降低,油灰比大時(shí)是增大的。彎曲抗折強(qiáng)度和彈性變形能力均呈現(xiàn)出增長(zhǎng)的趨勢(shì),隨著油灰比和聚灰比的增大,材料的韌性越來(lái)越好。復(fù)合材料隨著油灰比的增大和聚灰比的增大,其彈性恢復(fù)率也在增加,粘結(jié)強(qiáng)度隨著油灰比的增大而降低,復(fù)合材料中含有大量的水泥石束縛住瀝青膠質(zhì)的流動(dòng)使得其高溫穩(wěn)定性能好,抵抗異物侵入性能較佳。當(dāng)水灰比為0.45、聚灰比為0.2和油灰比為1時(shí)復(fù)合材料的各項(xiàng)路用性能指標(biāo)滿(mǎn)足規(guī)范對(duì)裂縫修補(bǔ)材料的要求,而且高溫流動(dòng)性和粘結(jié)強(qiáng)度都比普通裂縫修補(bǔ)材料變現(xiàn)優(yōu)異,與市售材料進(jìn)行性能對(duì)比其路用性能和性?xún)r(jià)比都存在優(yōu)勢(shì)。
[Abstract]:Most asphalt pavements in China have entered the peak period of maintenance and repair, among which cracks are the most important form of damage. Once the pavement cracks appear, not only destroy the integrity of the pavement structure, but also greatly reduce the driving comfort and safety, shorten the service life of the pavement, so it is necessary to repair the cracks in time. At present, there are shortcomings in performance and price of repair materials, so it is necessary to develop new high cost effective repair materials. In this paper, a new composite repair material was prepared by using emulsified asphalt and cement with high solid content (70.13) as the base material. The compressive strength, flexural flexural strength and deformation of polymer modified cement emulsified asphalt slurry under different ratio of cement to cement (0-0.2) and oil-cement ratio (0-1) were studied. The characteristics of uniaxial compression stress-strain curves were analyzed. The elastic recovery rate, bond strength and high temperature fluidity of composite materials used as crack repairing materials under different mix ratio were studied, and the ratio suitable for crack repair materials was optimized. The properties of the composites under the optimal mix ratio were compared with those of the commercial crack repair materials, and the relationship between the microstructure and the properties of the composites was observed by microscopic experiments. The results show that the compressive strength, bending flexural strength and shrinkage decrease with the increase of oil-cement ratio, and the consistency increases in a certain range under the same water-cement ratio, and increases with the increase of the aggregate cement ratio. The compressive strength decreases when the ratio of oil to cement is small and increases when the ratio of oil to cement is large. The flexural strength and elastic deformability show an increasing trend. With the increase of the ratio of oil to cement and the ratio of aggregate to cement, the toughness of the material becomes better and better. With the increase of the ratio of oil to cement and the ratio of aggregate to cement, the elastic recovery rate of the composite also increases, and the bond strength decreases with the increase of the ratio of oil to cement. The high temperature stability and the resistance to foreign body invasion of the composite materials are improved by the flow of asphalt resin bound by a large amount of cement stone. When the water-cement ratio is 0.45, the ratio of aggregate cement to cement is 0.2 and the ratio of oil to cement is 1, the road performance indexes of the composites meet the requirements of the specifications for crack repair materials, and the high temperature fluidity and bond strength are better than the ordinary crack repair materials. Compared with the commercial materials, its road performance and cost-performance have advantages.
【學(xué)位授予單位】：合肥工業(yè)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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