Mechanical performance of cold mix asphalt containing cup lump rubber as a sustainable bio-modifier  

作　　者：Syed Abdul Ghafar Muhammad Naqiuddin Mohd Warid Norhidayah Abdul Hassan Zulfiqar Ali Jattak Ashraf Abdalla Mohammed Radwan 

机构地区：[1]Faculty of Civil Engineering,Universiti Teknologi Malaysia,Skudai 81310,Malaysia [2]Department of Civil Engineering,Balochistan University of Information Technology,Engineering&Management Sciences,Quetta,Pakistan [3]Department of Civil Engineering,Balochistan University of Engineering and Technology,Khuzdar,Pakistan [4]Department of Civil Engineering,Faculty of Engineering,University of Tripoli,Tripoli,Libya

出　　处：《Journal of Traffic and Transportation Engineering(English Edition)》2024年第3期424-440,共17页交通运输工程学报（英文版）

基　　金：financially supported by the UTM Shine(Q.J130000.2451.09G26);the UTM High Impact Research Grant(Q.J130000.2451.09G20)provided by Universiti Teknologi Malaysia(UTM)。

摘　　要：The road construction industry aims to contribute to the protection of already compromised environment.Cold mix asphalt(CMA)is a measure initiated by the road industry to protect the environment and preserve energy.Despite having additional benefits,CMA has attracted little attention due to its inferior performance.CMA's performance is enhanced using a sustainable binder bio-modifier,natural cup lump rubber(CLR)is one of them.This study evaluated the tensile properties,rutting,moisture susceptibility,and adhesion properties of CLR-modified CMA(CMA-CR).The tensile property was enhanced by 26%due to CLR modification.CMA-CR had excellent rutting resistance of less than 2 mm rut depth at 10,000 load cycles,showing 70%improvement compared with conventional CMA.Moisture susceptibility evaluation indicated that CMA-CR had tensile strength ratio(TSR)value of 104%,satisfying the minimum 80%requirement of AASHTO T283.It also retained more than 96%bitumen coating.The moisture damage resistance was improved by 12%and 10%in terms of TSR and stripping,respectively.The durability results revealed that the CMA-CR mixture prevented higher mass loss,representing 14%improvement compared with conventional CMA.

关 键 词：Cup lump rubber Cup lump modified cold mix asphalt Moisture damage Tensile property RUTTING Digital imaging 

分 类 号：U414[交通运输工程—道路与铁道工程]