本文選題：道路工程 + 季凍區(qū)��； 參考：《長(zhǎng)安大學(xué)學(xué)報(bào)(自然科學(xué)版)》2015年06期

【摘要】：為改善季凍區(qū)公路瀝青路面病害突出的問(wèn)題,通過(guò)對(duì)橡膠粉與SBS復(fù)合改性瀝青混合料性能的系統(tǒng)研究,基于季凍區(qū)的特殊要求,確定了橡膠粉與SBS適宜的摻配比例,系統(tǒng)評(píng)價(jià)了復(fù)合改性瀝青混合料的路用性能;通過(guò)掃描電鏡、紅外光譜以及差示掃描熱量分析等試驗(yàn)方法,從微觀角度分析了橡膠粉與SBS復(fù)合改性瀝青的機(jī)理。研究結(jié)果表明:用于季凍區(qū)的橡膠粉與SBS復(fù)合改性瀝青中,橡膠粉的推薦摻量為20%~23%,SBS推薦摻量為2.0%;橡膠粉與SBS復(fù)合改性瀝青可大幅改善SMA以及AC型瀝青混合料的路用性能,相比SBS改性瀝青混合料,高溫性能提升59%,低溫性能提升幅度高達(dá)154%,凍斷溫度降低約18℃;橡膠粉與SBS復(fù)合改性瀝青體系熱穩(wěn)定性較普通改性瀝青好,這與其各成分間表面張力降低有關(guān)。
[Abstract]:In order to improve the problem of asphalt pavement disease in seasonal freezing area, through the systematic study on the performance of rubber powder and SBS compound modified asphalt mixture, based on the special requirements of the season frozen area, the suitable blending ratio of rubber powder and SBS was determined. The pavement performance of composite modified asphalt mixture was systematically evaluated, and the mechanism of rubber powder and SBS composite modified asphalt was analyzed from the microscopic point of view by means of scanning electron microscope, infrared spectrum and differential scanning heat analysis. The results show that the recommended amount of rubber powder and SBS compound modified asphalt is 20% and 2.0%, and the pavement performance of SMA and AC type asphalt mixture can be greatly improved by rubber powder and SBS compound modified asphalt. Compared with SBS modified asphalt mixture, the high temperature performance is improved 59%, the low temperature property is increased up to 154%, the freezing break temperature is reduced about 18 鈩，

本文編號(hào)：2087722