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楚曉輝

（ 河南交院工程技術有限公司 ，河南 鄭州 450000)

摘   要 ：通過車轍試驗 、低溫彎曲試驗 、浸水馬歇爾試驗和凍融劈裂試驗研究了蒙脫土摻量對丁苯橡膠改性瀝青混合料的高低溫和水穩定性影響，采用鄧氏關聯度分析蒙脫土摻量對路用性能的影響規律。結果表明： 蒙脫土可改變丁苯橡膠改性瀝青混合料的高溫穩定性和水穩定性，且摻量超過 4% 后會對水穩定性產生不利影響，摻入蒙脫土會使低溫抗裂性變差；蒙脫土摻量對丁苯橡膠改性瀝青混合料路用性能指標的影響程度大小依次為高溫性能＜水穩定性 ＜低溫性能。綜合考慮各方面性能影響及其影響程度大小，蒙脫土摻量適宜為2% ~   4% ,  建議蒙脫土摻量為 3% 。

關鍵詞：蒙脫土 ；丁苯橡膠 ；瀝青混合料 ；路用性能

中圖分類號：U414           

文獻標志碼：A           

文章編號： 1005- 8249   (2024)  04- 0134- 04 

DOI:10. 19860/j.cnki.issn1005 - 8249.2024.04.024

 

CHU Xiaohui

(Henan Jiaotong Institute Engineering Technology Co. ，Ltd. ，Zhengzhou 450000 ,   China)

Abstract : The effects of montmorillonite content on the high and low temperature and water stability of styrene butadiene rubber modified asphalt mixture were studied by rutting test, low temperature bending test, immersion Marshall test and freeze-thaw splitting test, and the influence of montmorillonite content on road performance was analyzed by Deng 's correlation degree. The results show that montmorillonite can improve the high temperature stability and water stability of styrene butadiene rubber modified asphalt mixture, and the water stability will be adversely affected when the content exceeds 4 %. The results show that addition of montmorillonite will make the low temperature crack resistance worse. The influence of montmorillonite content on the road performance index of styrene-butadiene rubber modified asphalt mixture was in the order of high temperature performance < water stability < low temperature performance. Considering the influence of various aspects of performance and the degree of influence, the suitable content of montmorillonite is 2 % ~ 4 %,recommended content of montmorillonite is 3 %.

Keywords: montmorillonite; butadiene styrene rubber; asphalt mixture; road performance

作者簡介： 楚曉輝  (1975—) ,   男 ，本科 ， 高級工程師 ，研究方向：公路與橋梁及城市道路。

收稿日期：2023- 03- 1 1