本文選題：道路工程　切入點：溫拌瀝青混合料　出處：《新疆大學》2014年碩士論文　論文類型：學位論文

【摘要】：在全球能源緊缺以及環(huán)境污染加劇的大環(huán)境下，我國的公路建設(shè)面臨著新的挑戰(zhàn)。瀝青路面作為主要的道路交通運輸系統(tǒng)路面形式，，除了滿足基本的技術(shù)要求還應(yīng)向著綠色、節(jié)能、環(huán)保的新型路面材料方向發(fā)展。溫拌瀝青混合料技術(shù)起源于歐洲，該項技術(shù)能夠顯著降低瀝青混合料的拌和溫度，但其各項技術(shù)性能卻不亞于熱拌瀝青混合料，在國外已得到廣泛的應(yīng)用。由于積累的技術(shù)經(jīng)驗不足，溫拌瀝青混合料技術(shù)在國內(nèi)仍處于試驗研究階段，還未得到大量的工程實際應(yīng)用。造成這種現(xiàn)象的原因比較復雜，主要存在缺乏完善的溫拌瀝青混合料設(shè)計方法指導、行業(yè)內(nèi)對溫拌瀝青混合料的某些路用性能抱有質(zhì)疑、采用溫拌瀝青混合料技術(shù)的經(jīng)濟效益不甚明顯等問題。 為促進溫拌瀝青混合料技術(shù)的應(yīng)用，本文在已有研究成果的基礎(chǔ)上，依托國家自然科學基金項目“基于CT掃描技術(shù)的溫拌瀝青混合料壓實特性及其演化過程”，著重在溫拌瀝青混合料優(yōu)化設(shè)計方法上展開研究。以溫拌劑對基質(zhì)瀝青性能的影響作為參考，分析國產(chǎn)有機添加劑型溫拌劑對瀝青混合料性能的影響。借鑒熱拌瀝青混合料級配設(shè)計方法，將多級嵌擠密實型級配應(yīng)用于溫拌瀝青混合料，嘗試從級配方面優(yōu)化溫拌瀝青混合料路用性能。根據(jù)Superpave的設(shè)計理念，將GTM設(shè)計方法關(guān)于計算瀝青用量的計算式用于馬歇爾擊實的溫拌瀝青混合料，并用試驗論證該方法的可行性。采用新型的瀝青浸漬法測定瀝青混合料理論最大密度以及集料有效密度，歸納測定混合料和集料密度方面的技巧。以等體積參數(shù)設(shè)計原則為指導，探究溫拌瀝青混合料拌和溫度的降低程度，總結(jié)出具體的確定溫拌瀝青混合料拌和溫度設(shè)計方法。結(jié)合馬歇爾試驗、車轍試驗、低溫劈裂試驗驗證溫拌瀝青混合料的路用性能，提出確定溫拌劑摻量的詳細方法。以離散單元法軟件為依托，推導集料級配轉(zhuǎn)化計算式，建立骨架嵌擠密實型混合料數(shù)值模型，通過虛擬試驗研究級配對溫拌瀝青混合料穩(wěn)定性的影響。參考現(xiàn)有的溫拌瀝青混合料研究成果并結(jié)合本文的研究成果，概括基于馬歇爾成型的溫拌瀝青混合料目標配合比優(yōu)化設(shè)計方法，提出溫拌瀝青混合料設(shè)計不同于熱拌瀝青混合料設(shè)計的注意事項。 研究結(jié)果表明，與熱拌瀝青混合料相比，溫拌瀝青混合料的設(shè)計以及性能均有其自身的特點。K型溫拌劑可以保證路用性能的前提下有效降低混合料拌和溫度，起到節(jié)能減排的作用。集料級配對溫拌瀝青混合料的路用性能影響較大，應(yīng)針對不同集料的特性設(shè)計相應(yīng)級配更具合理性。溫拌劑摻量、拌和溫度均會對瀝青混合料的體積性能以及路用性能產(chǎn)生影響�；隈R歇爾成型的溫拌瀝青混合料設(shè)計不同于普通熱拌瀝青混合料設(shè)計，應(yīng)采用優(yōu)化的設(shè)計方法設(shè)計溫拌瀝青混合料。
[Abstract]:In the environment of global energy shortage and environmental pollution, highway construction in China is facing new challenges. Asphalt pavement, as the main road transportation system pavement, should be green in addition to meeting the basic technical requirements. The technology of warm mix asphalt mixture originated in Europe, this technology can significantly reduce the mixing temperature of asphalt mixture, but its technical performance is no less than that of hot mix asphalt mixture. It has been widely used in foreign countries. Due to the lack of accumulated technical experience, the technology of warm mix asphalt mixture is still in the stage of test and research in China, and has not been applied in a large number of projects. The reasons for this phenomenon are quite complex. There are some problems such as lack of perfect design method of warm mix asphalt mixture, doubt about some road performance of warm mix asphalt mixture in the industry, and the economic benefit of adopting warm mix asphalt mixture technology is not obvious. In order to promote the application of warm mix asphalt mixture technology, based on the existing research results, Based on the National Natural Science Foundation of China, "compaction characteristics and Evolution process of warm mix Asphalt mixture based on CT scanning Technology", the optimization design method of warm mix asphalt mixture is studied. Performance impact as a reference, This paper analyzes the influence of domestic organic additive warm mix on the performance of asphalt mixture. By using the design method of hot mix asphalt mixture for reference, the multi-stage compaction gradation is applied to warm mix asphalt mixture. This paper attempts to optimize the pavement performance of warm mix asphalt mixture from the aspect of gradation. According to the design concept of Superpave, the calculation formula of GTM design method about calculating asphalt content is applied to Marshall compacted warm mix asphalt mixture. The new asphalt impregnation method is used to determine the theoretical maximum density of asphalt mixture and the effective density of aggregate. Induces the technique of measuring the density of mixture and aggregate. Guided by the principle of equal volume parameter design, the paper explores the lowering degree of mixing temperature of warm mix asphalt mixture, The concrete design method for determining the mixing temperature of warm mix asphalt mixture is summarized. The road performance of warm mix asphalt mixture is verified by Marshall test, rutting test and low temperature split test. A detailed method for determining the content of warm mixing agent is put forward. Based on the discrete element method software, the calculation formula of aggregate gradation conversion is derived, and the numerical model of skeleton compacted mixture is established. The influence of gradation on the stability of warm mix asphalt mixture is studied by virtual test. This paper summarizes the optimum design method of target mix ratio of warm mix asphalt mixture based on Marshall forming, and points out that the design of warm mix asphalt mixture is different from that of hot mix asphalt mixture design. The results show that compared with hot mix asphalt mixture, the design and performance of warm mix asphalt mixture have its own characteristics. K type warm mix agent can effectively reduce the mixing temperature under the premise of road performance. The aggregate gradation has a great influence on the pavement performance of the warm mix asphalt mixture, so it is more reasonable to design the corresponding gradation according to the characteristics of different aggregates. Mixing temperature will affect the volume performance and road performance of asphalt mixture. The design of warm mix asphalt mixture based on Marshall molding is different from that of common hot mix asphalt mixture design. The optimum design method should be used to design the warm mix asphalt mixture.
【學位授予單位】：新疆大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U414

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