Thermal behaviour of extracted rubber from hot and warm rubberized asphalt binders

Huayang Yu, Zhen Leng, Zheming Gao

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

This study investigated the thermal behaviour of Crumb Rubber Modifier (CRM) extracted from hot Asphalt Rubber (AR) and warm AR binders through Differential Scanning Calorimeter (DSC) testing and Thermal Gravimetric Analysis (TGA). Three methods were implemented to extract CRM from the modified binders, which resulted in the following findings: 1) the interaction between CRM and base binder is a component exchange process: i.e., natural rubber and styrene-butadiene rubber are released from CRM and blended with asphalt molecules; 2) different Warm Mix Asphalt (WMA) additives have different effects on the interaction between asphalt and rubber: wax based additives penetrate into CRM while the liquid chemical additive rarely interacts with the rubber modifier; and 3) the incorporation of WMA additives, especially the wax based additives, promotes the component exchange process between rubber and asphalt.
Original languageEnglish
Title of host publicationFunctional Pavement Design - Proceedings of the 4th Chinese-European Workshop on Functional Pavement Design, CEW 2016
PublisherCRC Press/Balkema
Pages509-516
Number of pages8
ISBN (Print)9781315643274
Publication statusPublished - 1 Jan 2016
Event4th Chinese-European Workshop on Functional Pavement Design, CEW 2016 - Delft, Netherlands
Duration: 29 Jun 20161 Jul 2016

Conference

Conference4th Chinese-European Workshop on Functional Pavement Design, CEW 2016
Country/TerritoryNetherlands
CityDelft
Period29/06/161/07/16

ASJC Scopus subject areas

  • Building and Construction
  • Civil and Structural Engineering

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