TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

Performance Enhancement of Crumb Rubber–Modified Asphalts Through Control of the Developed Internal Network Structure

Accession Number:

01478728

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States
Order URL: http://www.trb.org/Main/Blurbs/169956.aspx

Find a library where document is available


Order URL: http://worldcat.org/isbn/9780309286947

Abstract:

Control of the internal network structure of crumb rubber–modified asphalt (CRMA) was investigated for its effect on property development in the study presented in this paper. The investigation included evaluation by rheological and interrupted shear tests. Rheological testing involved the monitoring of the changes of the produced complex modulus (G*) and phase angle (δ) for CRMA. In the interrupted shear tests, the shear stress profile for the produced CRMA was investigated. It was found that triggering the critical conditions of the combined interaction of speed, temperature, and time was essential to inducing the formation of the three-dimensional network structure within CRMA. Such triggering conditions played an important role in the swelling, dissolution, and release of crumb rubber modifier components into the asphalt liquid phase. Gel permeation chromatography was used to characterize the nature of modifications that led to the occurrence of a three-dimensional network structure within the produced CRMA. The formation of a three-dimensional network structure for CRMA played a major role in the enhancement of its rheological properties in terms of its stiffness and elasticity. Superior improvements in the stiffness and elasticity indicated improved rutting resistance as well as alleviated permanent deformation problems.

Monograph Accession #:

01500961

Report/Paper Numbers:

13-4363

Language:

English

Authors:

Ragab, Mohyeldin
Abdelrahman, Magdy
Ghavibazoo, Amir

Pagination:

pp 96–104

Publication Date:

2013

Serial:

Transportation Research Record: Journal of the Transportation Research Board

Issue Number: 2371
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

9780309286947

Media Type:

Print

Features:

Figures (6) ; References (25) ; Tables (1)

Subject Areas:

Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials

Files:

TRIS, TRB, ATRI

Created Date:

Feb 5 2013 12:51PM

More Articles from this Serial Issue: