本文選題：道路工程　切入點：湖瀝青　出處：《重慶交通大學(xué)學(xué)報(自然科學(xué)版)》2017年06期

【摘要】：為了研究湖瀝青中灰分的改性機理與改性效果,分析了瀝青及集料的表界面參數(shù)、瀝青膠漿體系的黏附功以及高溫車轍因子等幾個影響因素。得出以下結(jié)果:粉體的比表面積與其粒徑成負相關(guān)的趨勢;粉體的表面能參數(shù)和粉體瀝青膠漿的黏附功都隨粉體粒徑的減小而減小;在粉膠比相同的條件下,瀝青膠漿體系中粉體的黏附功與比表面積是相關(guān)的。在此基礎(chǔ)上,得出結(jié)論:用比黏附功來評價瀝青膠漿體系的比黏附功更加科學(xué);湖瀝青中灰分對基質(zhì)瀝青的改性作用相對比較復(fù)雜,已探知的改性機理主要是通過其較大的比表面積、較高的比黏附功來實現(xiàn)的,同時該部分的改性作用約占灰分對基質(zhì)瀝青改性作用的15%,另外85%的改性作用的機理尚待深入研究。
[Abstract]:In order to study the modification mechanism and effect of ash in lake asphalt, the surface interface parameters of asphalt and aggregate were analyzed. The following results are obtained: the specific surface area of the powder is negatively correlated with its particle size; The surface energy parameters of the powder and the adhesion work of the powder asphalt paste decrease with the decrease of the particle size, and the adhesion work of the powder in the asphalt slurry system is related to the specific surface area when the powder / binder ratio is the same. It is concluded that it is more scientific to evaluate the specific adhesion work of asphalt slurry system by specific adhesion work, and the modification effect of ash in lake asphalt on matrix asphalt is relatively complex, and the mechanism of modified asphalt is mainly through its large specific surface area. At the same time, the modification of this part accounts for about 15% of the modified effect of ash on the matrix asphalt, and the mechanism of the other 85% of the modification still needs to be further studied.
【作者單位】： 重慶交通大學(xué)交通土建工程材料國家地方聯(lián)合工程實驗室;廣東省路橋建設(shè)發(fā)展有限公司;
【基金】：國家自然科學(xué)基金項目(51508062)
【分類號】：U414

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