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Title:

PREPARATION AND CHARACTERIZATION OF ASPHALT-MODIFIED POLYETHYLENE BLENDS

Accession Number:

00636332

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309054621

Abstract:

Eight asphalt samples from four manufacturers with grades from AC-10 to AC-30 were characterized by carbon-13 nuclear magnetic resonance, dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC). Glass transition temperatures and activation energies for the relaxation process of the asphalt were determined with DMA experiments. Polyethylene, a recyclable waste that is abundantly available either as virgin material not included in specifications or from solid waste classification processes, was slightly chlorinated to improve its compatibility with asphalt. High-density polyethylene (HDPE), chlorinated polyethylene (CPE), and maleated polyethylene (MGPA)-modified asphalts were studied with DMA in both bending and shear modes. DSC, fluorescence reflection microscopy, and Fourier transform infrared were also employed to characterize the polymer-modified asphalts. Creep resistance and low-temperature crack resistance of the asphalt and the polymer-modified asphalts were evaluated. The results confirm that CPEs with low chlorine contents (< 15 weight percent) are more compatible with asphalt than is HDPE. Marked improvements in blend properties are also observed with MGPAs, provided that the degree of maleation does not exceed 3%.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1391, Asphalt Cement and Asphalt/Polymer Blends. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

Monograph Accession #:

01403229

Language:

English

Authors:

Daly, William H
Qui Chiu, Zhaoyao
Negulescu, Ioan

Pagination:

p. 56-64

Publication Date:

1993

Serial:

Transportation Research Record

Issue Number: 1391
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309054621

Features:

Figures (9) ; References (24) ; Tables (3)

Old TRIS Terms:

Subject Areas:

Highways; Materials; I31: Bituminous Binders and Materials

Files:

TRIS, TRB, ATRI

Created Date:

Sep 14 1993 12:00AM

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