Improving the Selection of Virgin Binders for Recycled Hot Mixtures in Ontario

作     者：Xiomara A.Sanchez-Castillo Susan L.Tighe 

作者机构：Department of Civil and Environmental EngineeringUniversity of Waterloo200 University Avenue WestWaterlooONCanada N2L 3G1 PH:(519)888-4567 ext.33872 Centre of Pavement and Transportation for Technology Department of Civil and Environmental EngineeringUniversity of Waterloo200 University Avenue WestWaterlooONCanada N2L 3G1 

出 版 物：《International Journal of Transportation Science and Technology》 (交通科学与技术(英文))

年 卷 期：2015年第4卷第1期

页      面：47-59页

学科分类：08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：the support of the Ministry of Transportation Ontario(MTO) the Ontario Hot Mix Producers Association(OHMPA) and the Natural Science and Engineering Research Council of Canada(NSERC)who are sponsoring partners in this study 

主　　题：Mixture Virgin Canada 

摘      要：The design of Recycled Hot Mixtures(RHM)in the United States is based on the guidelines provided by the National Cooperative Highway Research Program(NCHRP)Report ***,the extreme climatic characteristics in Canada require a validation on the selection of the virgin binders especially for Superpave Surface layer *** paper shows the results of a laboratory characterization of twelve conventional Superpave 12.5 mm mixtures,four of them with high Reclaimed Asphalt Pavement(RAP)*** Stress Restrained Specimen Test(TSRST)was conducted on triplicate samples for each mixture,and also the continuous grades for the binders were *** findings were compared with the recent guidelines provided by the NCHRP Report *** modulus was performed and used to determine the critical temperatures of the blended binder without *** analyses suggest that the virgin binder could be selected based on the critical temperature of the climate zone and the RAP content,and that the use of softer binders could not guaranty that the mixtures have the desired performance to low temperature cracking.