综合精品_淫语对白_亚洲一线二线在线观看_自偷自拍av_女m被主人虐玩调教91_青草精品视频_一乃葵在线_村上里沙在线观看_国产精品刺激_日韩精品视频免费_国产又黄又猛又粗_3d蒂法精品啪啪一区二区免费_日韩一本在线_奇米精品一区二区三区四区_日本三级黄色录像

PDF全文閱讀

袁凍雷

（河南交通投資集團有限公司，河南 鄭州 450000）

摘 要：通過將不同摻量的玄武巖纖維與聚酯纖維摻入透水瀝青混合料中進行改性，采用室內凍融劈裂試驗、浸水馬歇爾試驗及浸水飛散試驗，系統考察了纖維類型及摻量對透水瀝青混合料水穩定性的影響規律，結果表明：1）隨著BF、PF纖維摻量的增加，透水瀝青混合料的劈裂強度、穩定度、凍融劈裂強度比及浸水殘留穩定度大致均呈先增大后減小變化，而浸水分散損失則隨之呈先減小后增大變化；2）適量BF、PF纖維的摻入能起到良好的加筋分散作用，有利于瀝青混合料空間結構穩定，因此能改善透水瀝青混合料的水穩定性，BF纖維和PF纖維的最宜摻量分別為0.4%和0.2%；3）BF纖維能夠顯著提高透水瀝青混合料的凍融劈裂強度比，而PF纖維能夠顯著提高透水瀝青混合料的浸水殘留穩定度及浸水飛散損失，故BF纖維適用于北方季凍地區，而PF纖維則更適用于南方多雨地區。

關鍵詞：透水瀝青混合料；玄武巖纖維；聚酯纖維；水穩定性

中圖分類號：U414           

文獻標志碼：A       

文章編號：1005-8249（2024）01-0052-05

DOI：10.19860/j.cnki.issn1005-8249.2024.01.010

 

YUAN Donglei

(Henan Transportation Investment Group Co., Ltd., Zhengzhou 450000,China)

Abstract: By adding basalt fiber and polyester fiber with different content into permeable asphalt mixture for modification, indoor freeze-thaw splitting test, immersion Marshall test and immersion dispersion test are used to systematically investigate the influence of fiber type and content on water stability of permeable asphalt mixture. The results show that:With the increase of BF and PF fiber content, the splitting strength, stability the freeze-thaw splitting strength ratio and the immersion residual stability increased first and then decreased, while the immersion dispersion loss decreased first and then increased;  The proper amount of BF and PF fibers can play a good role in reinforcement and dispersion, which is conducive to the stability of the spatial structure of asphalt mixture. Therefore, it can improve the water stability of permeable asphalt mixture. The optimal amount of BF fiber and PF fiber is 0.4% and 0.2% respectively;  BF fiber can significantly improve the freeze-thaw splitting strength ratio of permeable asphalt mixture, while PF fiber can significantly improve the immersion residual stability and immersion dispersion loss of permeable asphalt mixture. Therefore, BF fiber is suitable for the northern seasonal frozen areas, while PF fiber is more suitable for the southern rainy areas.

Keywords: permeable asphalt mixture; basalt fiber; polyester fiber; water stability

 

 

 

 

作者簡介：袁凍雷（1973-），男，碩士，高級工程師，主要研究方向：道路與橋梁工程。

收稿日期：2023-11-09