【摘要】：建設資源節(jié)約型、環(huán)境友好型社會是我國一項長期的戰(zhàn)略任務，，在道路工程建設中，我國《交通運輸“十二五”發(fā)展規(guī)劃》把溫拌瀝青鋪路技術作為了公路建設節(jié)能減排示范推廣工程。但是目前國內(nèi)外溫拌技術在降低瀝青混合料生產(chǎn)施工溫度的同時，也會一定程度上損壞混合料的部分路用性能，而且溫拌劑價格普遍昂貴，同時需要添加特殊的生產(chǎn)設備，阻礙了其推廣應用。 為了開發(fā)一種擁有自主知識產(chǎn)權的環(huán)保型瀝青混合料技術，并實現(xiàn)溫拌瀝青混合料技術的大規(guī)模推廣應用，本文針對軟質(zhì)瀝青預拌、巖瀝青粉末復拌加強的環(huán)保技術路線展開了研究，提出預拌-增強技術環(huán)保型混合料的組成設計方法和制備工藝關鍵控制條件，并對環(huán)保型混合料的社會效益和經(jīng)濟效益予以分析，為其推廣應用提供指導和參考依據(jù)。 首先，分析現(xiàn)有溫拌技術的降粘機理和所存在的問題，調(diào)查巖瀝青在道路工程中的應用情況及其特點，針對巖瀝青對基質(zhì)瀝青的改性機理展開研究，結(jié)果表明巖瀝青可以顯著改善基質(zhì)瀝青的性能。 其次，對軟硬瀝青復合膠結(jié)料性能指標和環(huán)保型瀝青混合料路用性能展開研究，驗證基于預拌-增強技術環(huán)保型瀝青混合料的應用可行性。結(jié)果表明環(huán)保型混合料在顯著降低瀝青混合料拌和溫度30℃條件下，能夠達到與同類型普通熱拌瀝青混合料相同甚至更優(yōu)的路用性能。 然后，分析研究預拌-增強技術環(huán)保型混合料的制備工藝，包括拌和時間、拌和溫度、養(yǎng)護時間以及添加工藝、工序等加工條件對環(huán)保型瀝青混合料性能的影響規(guī)律，總結(jié)提出預拌-增強技術環(huán)保型混合料的組成設計方法和制備工藝關鍵控制條件。 最后，分析預拌-增強技術環(huán)保型瀝青混合料的社會經(jīng)濟效益和應用前景，提出瀝青混合料在生產(chǎn)加熱過程中的能耗計算方法，綜合對比其他溫拌技術和普通熱拌瀝青混合料，結(jié)果表明基于預拌-增強技術的環(huán)保型瀝青混合料具有節(jié)能減排、性能優(yōu)良、建設成本低等優(yōu)點，具有良好的推廣應用價值。
[Abstract]:Building a resource-conserving and environment-friendly society is a long-term strategic task in China. The 12th Five-Year Plan of Transportation in China takes the warm mix asphalt paving technology as the demonstration and extension project of energy saving and emission reduction in highway construction. However, at present, the domestic and foreign warm mix technology can reduce the construction temperature of asphalt mixture, but also damage some of the pavement performance of the mixture to some extent, and the price of warm mix agent is generally expensive, and special production equipment is needed at the same time. It hinders its popularization and application. In order to develop an environmentally friendly asphalt mixture technology with independent intellectual property rights, and to realize the large-scale popularization and application of warm mix asphalt mixture technology, this paper aims at soft asphalt pre-mixing. The environmental protection technical route of rock asphalt powder remixing is studied, and the composition design method and the key control conditions of the preparation technology are put forward. The social and economic benefits of environment-friendly mixture are analyzed to provide guidance and reference for its popularization and application. Firstly, the viscosity reduction mechanism and existing problems of existing warm mixing technology are analyzed, the application and characteristics of rock asphalt in road engineering are investigated, and the modification mechanism of rock asphalt to matrix asphalt is studied. The results show that rock asphalt can significantly improve the performance of base asphalt. Secondly, the performance index of soft and hard asphalt binder and the road performance of environmental protection asphalt mixture are studied to verify the feasibility of environmental friendly asphalt mixture based on ready-reinforced technology. The results show that the environmental friendly mixture can achieve the same or better road performance as the same type of common hot mix asphalt mixture under the condition of significantly reducing the mixing temperature of the asphalt mixture at 30 鈩

本文編號：2277097