PREPARATION AND CHARACTERIZATION OF ASPHALT-MODIFIED POLYETHYLENE BLENDS
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%.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309054621
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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
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Authors:
- Daly, William H
- Qui Chiu, Zhaoyao
- Negulescu, Ioan
- Publication Date: 1993
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 56-64
- Monograph Title: Asphalt cement and asphalt/polymer blends
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Serial:
- Transportation Research Record
- Issue Number: 1391
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Activation (Chemistry); Calorimeters; Cracking; Creep; Ethylene resins; Fluorescence; Glass; Infrared analysis; Low temperature; Mechanical analysis; Microscopy; Nuclear magnetic resonance; Polymer asphalt; Resistance (Mechanics)
- Uncontrolled Terms: Fracture resistance; Polyethylene; Preparation
- Old TRIS Terms: Creep resistance; Fluorescence reflection microscopy; Glass transition temperatures
- Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;
Filing Info
- Accession Number: 00636332
- Record Type: Publication
- ISBN: 0309054621
- Files: TRIS, TRB, ATRI
- Created Date: Sep 14 1993 12:00AM