老化及浸水条件下凝灰岩沥青混合料长期水稳定性能研究

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中图分类号：U141 文献标志码：A 文章编号：1005-8249（2025）04-0013-07

DOI：10.19860/j.cnki.issn1005-8249.2025.04.003

LIU Yudong¹，CAI Yanxia1，2，3，XI Jin4，YANG Jie²³，LYU Xiaobo'

（1. School of Civil Engineering，Hebei University of Engineering，Handan O56038，China; 2. Beijing Zhonglu Gaoke Highway Technology Co.， Ltd.， Beijing 1OOO88， China;

3.Research and Development Center of Transport Industry of New Materials， Technologies Application for Highway Construction and Maintenance， Beijing 1OOO88， China;

4. Zhejiang Jiaotou Expressway Construction Management Co.， Ltd.， Hangzhou 330oOo， China）

Abstract：Inorder to improve the water damage resistance of tuffasphalt mixture，SUP2Oasphalt mixture was takenas the research object，andtheimprovement efectof diferentmixratiodesignschemesonthelong-term waterstabilityof the mixture wasevaluated throughthe waterimmersion Marshalltestbeforeandafteraging，thefreze-thawspliting testandtheuniaxial compression test after the mixture sample was immersed in water.The results show that：when using 7O# matrix asphalt +2% （204 cement instead of mineral powder，or using SBS modified asphalt + mineral powder， tuff asphalt mixture of long - term water stabilityperformanceand high temperature，lowtemperatureroadperformanceindicatorsaresatisfiedwiththeroad performance thechnicalrequirements.Theresearch results provideareference forthelarge-scaleuseof acidrock inroadconstruction.

Key words： tuf asphalt mixture；aging；be submerged in water；long-term water stability；road performance

0 引言

近几十年来，我国公路建设取得快速发展，大规模集中建设导致优质集料供应不足及工程造价提高[1-2]。（剩余7627字）