【摘要】：隨著國家節(jié)能減排工作的推進,如何保持熱拌瀝青混合料性能優(yōu)良的特點并克服其存在的環(huán)境污染重、能耗大、瀝青存在老化等問題,或者說如何保證冷拌瀝青混合料節(jié)能、環(huán)保的優(yōu)點的同時克服其性能尚有差距的不足是我們所努力的方向。半溫拌乳化瀝青是一種拌合溫度介于冷拌瀝青與熱拌瀝青之間,在形態(tài)上為乳化瀝青,性能上更接近熱拌瀝青的新型節(jié)能減排乳化瀝青。本文針對目前已有的半溫拌乳化技術做了深入的調(diào)研與分析,選用R24G型半溫拌瀝青乳化劑制備半溫拌乳化瀝青,通過對影響儲存穩(wěn)定性的各個因素的分析確定各因素的最佳值并依此得出半溫拌乳化瀝青的配方并與常規(guī)乳化瀝青對比分析并綜合評價其存儲穩(wěn)定性;采用修正水煮法和Vialat試驗研究不同類型瀝青與不同巖質(zhì)的礦料間的粘附性;為研究乳化過程對基質(zhì)瀝青常規(guī)指標的影響對其蒸發(fā)殘留物的三大指標進行研究并與其它類型瀝青的三大指標相對比�；旌狭戏矫嫜芯苛税霚匕枞榛癁r青混合料的強度形成機理及拌合方法,通過不同成型方法成型試件的孔隙率對比得出旋轉壓實能更好的確定半溫拌乳化瀝青混合料降溫幅度,并在此基礎上對半溫拌乳化瀝青混合料的路用性能進行綜合評價。研究表明:R24G型半溫拌瀝青乳化劑乳化工藝簡單,乳化效果良好;制備出的半溫拌乳化瀝青儲存穩(wěn)定性極佳,靜置30天未見明顯油水分離;與酸堿性礦料粘附性均較好�；旌狭辖禍匦Ч黠@,實現(xiàn)了低溫環(huán)保的目的,同時混合料相對的改善了高溫性能,在溫度降低35℃時,其混合料的水穩(wěn)定性與低溫性能均滿足規(guī)范要求,路用性能良好。
[Abstract]:With the development of national energy saving and emission reduction work, how to keep the excellent performance of hot mix asphalt mixture and overcome the problems such as heavy environmental pollution, large energy consumption, aging asphalt and so on, or how to ensure the energy saving of cold mix asphalt mixture. The advantage of environmental protection and overcome its performance gap is the direction of our efforts. Semi-warm emulsified asphalt is a new type of energy-saving and emission-reducing emulsified asphalt whose mixing temperature is between cold mix asphalt and hot mixed asphalt and is emulsified asphalt in morphology and its performance is closer to that of hot mix asphalt. Based on the investigation and analysis of the existing semi-warm emulsifying technology, R24G semi-warm asphalt emulsifier was selected to prepare semi-warm emulsified asphalt. Through the analysis of the factors affecting storage stability, the optimum value of each factor is determined and the formula of semi-temperature emulsified asphalt is obtained, and compared with the conventional emulsified asphalt, the storage stability is evaluated synthetically. Modified boiling method and Vialat test were used to study the adhesion between different types of bitumen and different rock masses. In order to study the influence of emulsification process on the conventional indexes of asphalt, the three indexes of evaporation residue of asphalt were studied and compared with those of other types of asphalt. In the aspect of mixture, the strength forming mechanism and mixing method of semi-warm emulsified asphalt mixture are studied. By comparing the porosity of different molding methods, it is concluded that rotary compaction can better determine the cooling range of semi-temperature emulsified asphalt mixture. On this basis, the road performance of semi-temperature emulsified asphalt mixture is evaluated. The results show that the emulsifying technology of R24G semi-temperature asphalt emulsifier is simple and the emulsification effect is good, the prepared semi-temperature emulsified asphalt has excellent storage stability, no obvious oil and water separation is found in 30 days of standing, and the adhesion to acid-base mineral aggregate is better. At the same time, the mixture can improve the performance of high temperature. When the temperature is reduced 35 鈩，

本文編號：2430041