本文選題：硅烷偶聯(lián)劑 + 卵碎石�。� 參考：《硅酸鹽通報》2017年08期

【摘要】：為了改善酸性卵碎石集料與瀝青粘附性,利用硅烷偶聯(lián)劑KH550對瀝青進行改性。采用針入度、延度、軟化點試驗分析了偶聯(lián)劑摻量對瀝青性質(zhì)的影響。采用紅外光譜分析、瀝青-卵碎石粉交互作用能力測試、低溫黏結(jié)性試驗和瀝青混合料水敏感性試驗,研究了偶聯(lián)劑對瀝青與卵碎石集料的界面作用。結(jié)果表明:經(jīng)過偶聯(lián)劑處理的卵碎石粉末的紅外光譜存在明顯的CH_2吸收帶,證明了在偶聯(lián)劑作用下卵碎石表面生成了聚硅氧烷。瀝青的軟化點隨偶聯(lián)劑摻量的增多先增大后減小,延度和針入度隨偶聯(lián)劑摻量的增多先減小后增大。偶聯(lián)劑摻量為0.6%時,瀝青-卵碎石粉體系的車轍因子G~*/sinδ與交互作用系數(shù)B值最高。在該摻量下,卵碎石低溫脫石量降低了50.7%;相對未改性瀝青混合料,水敏感性試驗后偶聯(lián)劑改性瀝青混合料的殘留劈裂強度比提高了7.9%。硅烷偶聯(lián)劑顯著提高了卵碎石與瀝青的界面性能。
[Abstract]:In order to improve the adhesion of acid egg macadam aggregate to asphalt, bitumen was modified by silane coupling agent KH550. The influence of coupling agent content on asphalt properties was analyzed by penetration, ductility and softening point test. The interaction between asphalt and egg macadam aggregate was studied by infrared spectroscopy (IR) test, low temperature bonding test and water sensitivity test of asphalt mixture. The results show that there is an obvious Ch _ 2 absorption band in the infrared spectrum of the egg macadam powder treated by coupling agent, which proves that polysiloxane is formed on the surface of the egg macadam treated by coupling agent. The softening point of asphalt increases first and then decreases with the increase of the content of coupling agent, and the ductility and penetration decrease first and then increase with the increase of the content of coupling agent. When the content of coupling agent is 0.6, the rutting factor G _ (+) / sin _ (未) and the interaction coefficient B are the highest in the asphalt-egg macadam system. Compared with unmodified asphalt mixture, the residual splitting strength ratio of coupling agent modified asphalt mixture increased by 7.9% after water sensitivity test. Silane coupling agent significantly improved the interfacial properties between egg macadam and asphalt.
【作者單位】： 四川省交通運輸廳公路規(guī)劃勘察設(shè)計研究院;重慶交通大學交通運輸學院;四川省路面結(jié)構(gòu)材料及養(yǎng)護工程實驗室;
【基金】：四川省交通科技資助項目(2017-A-03)
【分類號】：U414

【相似文獻】

相關(guān)期刊論文 前1條

1 朱春鳳;閆淑杰;;硅偶聯(lián)劑對玻璃纖維與瀝青界面的影響分析[J];公路交通科技(應用技術(shù)版);2011年06期

，

本文編號：2005227