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孔德生 ，黃桂林

 

（ 東北林業(yè)大學(xué) 土木工程學(xué)院 ，黑龍江 哈爾濱 150006)

摘   要 ：將不同摻量的玄武巖纖維(BF)和聚丙烯纖維  (PP)單摻 、混摻至瀝青混合料中進行改性，采用高溫車轍 、低溫小梁彎曲 、浸水馬歇爾、凍融劈裂及彎曲疲勞等室內(nèi)試驗，研究橋面鋪裝AC- 20 級配瀝青混合料的使用性能。結(jié)果表明： BF 纖維能夠有效提升瀝青混合料的強度和硬度，而 PP 纖維可以提供瀝青混合料更 好的柔性與黏性；單摻 BF纖維可以有效改善瀝青混合料的高溫穩(wěn)定性能 、低溫抗裂性能以及抗疲勞性能 ，單摻PP纖維僅改善水穩(wěn)定性能的效果優(yōu)于 BF, 而通過采用合理比例的BF與PP纖維混摻改性可綜合提升瀝青混合料的服役性能及使用壽命。

關(guān)鍵詞：瀝青混合料 ；纖維 ；橡膠顆粒 ；力學(xué)性能 ；路用性能

中圖分類號：U414           

文獻標(biāo)志碼：A            

文章編號： 1005- 8249   (2024)  04- 0129- 05 

DOI:10. 19860/j.cnki.issn1005 - 8249.2024.04.023

 

KONG Desheng ,  HUANG Guilin

(School of Civil Engineering ,  Northeast Forestry University ,  Harbin 150006 ,  China)

Abstract: Basalt fiber ( BF ) and polypropylene fiber ( PP ) with different contentw were mixed into the asphalt mixture for modification, and the high temperature rutting, low temperature trabecular bending, immersion Marshall, freeze-thaw splitting and bending fatigue were used. Laboratory tests were carried out to comprehensively investigate its road performance. The modification of AC-20 grade as phalt mixture for bridge deck pavement was studied.The results show that basalt fiber can effectively improve the strength and hardness of asphalt mixture,while PP fiber can provide better flexibility and viscosity of asphalt mixture.Single-doped BF fiber can effectively improve the high temperature stability,low temperature crack resistance and fatigue resistance of asphalt mixture.The effect of single-doped PP fiber on improving water stability is better than that of BF,and the service performance and service life of asphalt mixture can be comprehensively improved by using a reasonable proportion of BF and PP fiber.

Keywords: asphalt mixture; fiber; rubber particles; mechanical properties; road performance

作者簡介： 孔德生  (1994—) ,   男 ，碩士 ， 工程師 ，研究方 向 ：建筑與土木工程。

收稿日期：2023- 03- 19