界面增强型路面用纤维碎石封层的设计和性能研究  

Design and performance study of fiber gravel sealing for interface enhanced pavement

作　　者：蒋常龙 钱旭栋 钱高科 张颖 娄文雅 JIANG Changlong;QIAN Xudong;QIAN Gaoke;ZHANG Ying;LOU Wenya(Ningbo Road and Bridge Engineering Construction Co.,Ltd.,Zhejiang Ningbo 315000 China)

机构地区：[1]宁波路桥工程建设有限公司,浙江宁波315000

出　　处：《山东交通科技》2023年第3期14-18,共5页

基　　金：宁波市交通运输局科技项目,项目编号:202119。

摘　　要：本研究拟在半刚性基层和沥青层之间加入一层纤维碎石封层以实现层间界面黏结性能和抗剪切性能的显著增强,进而提高半刚性基层沥青路面的整体结构强度和耐久性。对纤维碎石封层的原材料组成类型以及碎石、沥青、纤维用量等进行了深入分析和探究,同时对各类原材组成的纤维碎石封层的抗拉拔性能和抗剪切性能进行了评估。获得了不同岩性和规格碎石成型的纤维碎石封层的各组成材料的最佳用量。明确了3~5 mm凝灰岩纤维碎石封层在各组成材料最佳用量下具有最优越的组合结构黏结性能和抗剪切性能。It is proposed to add a layer of fibrous gravel sealing between the semi-rigid base and the asphalt layer to achieve significant enhancement of interlayer interface bonding and shear resistance,thereby improving the overall structural strength and durability of the semi-rigid base asphalt surface.The paper analyzes and explores the raw material composition,gravel,asphalt,fiber usage,etc.,and evaluates the anti-drawing and shear resistance of fibre gravel sealing.The optimal amount of each constituent material of the fibrous gravel sealing with different lithology and specification was obtained.At the same time,it is clear that the 3~5 mm tuff fiber gravel sealing has the best bonding and shear resistance under the optimal use of each constituent material.

关 键 词：道路工程 纤维碎石封层 配合比设计 拉拔强度 抗剪强度 

分 类 号：U416.217[交通运输工程—道路与铁道工程]