【摘要】：隨著我國經(jīng)濟(jì)實力的飛速增長，橋梁建設(shè)進(jìn)入了蓬勃發(fā)展的時期。正交異性鋼橋面板體系憑借其優(yōu)勢成為鋼箱梁橋梁建設(shè)中常用的橋面板體系。然而，鋼橋面板與鋪裝材料協(xié)同變形等問題，一直是亟需解決的難題，國內(nèi)外很多學(xué)者對此做了大量研究。近幾年來，自主研發(fā)的樹脂瀝青組合體系鋼橋面鋪裝技術(shù)在國內(nèi)多座大橋進(jìn)行了鋪裝，取得了良好的效果。作為該鋪裝體系的整體化層，樹脂瀝青混合料的材料性能至關(guān)重要。本文結(jié)合理論分析與試驗驗證，基于表面能理論分析樹脂瀝青與非干燥集料的粘附性能，探究了集料含水率對樹脂瀝青混合料性能的影響，并提出樹脂瀝青混凝土水敏感性的改善措施。 研究了樹脂瀝青的材料性能。由于樹脂瀝青為冷拌瀝青材料，與普通熱拌瀝青的材料性能差異較大，評價指標(biāo)也有所不同，通過試驗探究了樹脂瀝青的粘度變化規(guī)律、施工和易性及斷裂強(qiáng)度�；诒砻婺芾碚摲治隽藰渲瑸r青與集料的粘附性能，，結(jié)果表明水與集料的粘附功大于樹脂瀝青與集料，當(dāng)集料中存在水時，水比樹脂瀝青更易與集料粘附，在樹脂瀝青與集料之間形成水膜，進(jìn)而影響混合料路用性能。試驗結(jié)果也表明，與集料的粘附功樹脂瀝青遠(yuǎn)大于基質(zhì)瀝青、SBS改性瀝青，體現(xiàn)出與集料優(yōu)異的粘附性。 研究了樹脂瀝青混合料的路用性能，包括允許工作時間、水穩(wěn)定性、高溫穩(wěn)定性、低溫性能等。設(shè)計模擬集料含水率的試驗方法，并探究了集料含水率對混合料路用性能的影響。結(jié)果表明隨著集料含水率的增加，混合料的各項路用性能不同程度地降低。 通過試驗選定生石灰為最佳外摻劑，并根據(jù)馬歇爾試驗探究外摻劑對混合料性能的改善作用。結(jié)果表明摻入生石灰后，與水反應(yīng)生成氫氧化鈣，提高混合料的抗剝落能力。不同含水率下存在最佳生石灰摻量，摻入量較少會降低除水效果；摻入過多會導(dǎo)致生石灰成團(tuán)結(jié)塊，遇水后體積膨脹脹裂混合料。通過理論與試驗結(jié)合，推導(dǎo)出生石灰最佳摻量方程，并提出了樹脂瀝青混凝土水敏感性的改善措施，對結(jié)構(gòu)層施工工藝進(jìn)行研究。
[Abstract]:With the rapid growth of China's economic strength, bridge construction has entered a period of vigorous development. Orthotropic steel bridge panel system has become the bridge deck system in the construction of steel box girder bridge by virtue of its advantages. However, the cooperative deformation of steel bridge deck and pavement materials has always been a difficult problem to be solved, and many scholars at home and abroad have done a lot of research on it. In recent years, the steel deck paving technology of resin asphalt composite system has been applied to many bridges in China, and good results have been obtained. As the integral layer of the pavement system, the material performance of resin asphalt mixture is very important. Combined with theoretical analysis and experimental verification, based on the surface energy theory, the adhesion between resin asphalt and non-dry aggregate is analyzed, and the effect of aggregate moisture content on the performance of resin asphalt mixture is explored. The improvement measures of water sensitivity of resin asphalt concrete are put forward. The properties of resin pitch were studied. Because the resin asphalt is a cold mix asphalt material, the performance of the resin asphalt is different from that of the common hot mix asphalt, and the evaluation index is also different. Through the experiment, the change law of viscosity, the construction and the easiness and the breaking strength of the resin asphalt are studied. Based on the theory of surface energy, the adhesion between resin asphalt and aggregate is analyzed. The results show that the adhesion function of water and aggregate is greater than that of resin asphalt and aggregate. When there is water in aggregate, water adheres to aggregate more easily than resin asphalt. Water film is formed between resin asphalt and aggregate, which affects pavement performance of mixture. The experimental results also show that the adhesion resin asphalt with aggregate is much larger than the base asphalt and SBS modified asphalt, which shows excellent adhesion to aggregate. The pavement performance of resin asphalt mixture was studied, including allowable working time, water stability, high temperature stability, low temperature performance and so on. The test method of simulating aggregate moisture content is designed, and the influence of aggregate moisture content on pavement performance of mixture is explored. The results show that with the increase of aggregate moisture content, the pavement performance of the mixture decreases in varying degrees. The quicklime was selected as the best admixture, and the effect of the admixture on the performance of mixture was studied according to Marshall test. The results show that the mixture can react with water to form calcium hydroxide after adding quicklime to improve the anti-spalling ability of mixture. Under different moisture content, the optimum content of quicklime is the best, and the low content of quicklime will reduce the effect of water removal; too much admixture will lead to the agglomeration of quicklime, and the volume expansion dilatation and crack mixture after water treatment. Through the combination of theory and experiment, the equation of the optimum content of quicklime was deduced, and the improvement measures of water sensitivity of resin asphalt concrete were put forward, and the construction technology of structure layer was studied.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U414

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