ASPHALT-RUBBER STRESS-ABSORBING MEMBRANES: FIELD PERFORMANCE AND STATE OF THE ART
Pavement cracking and subsequent reflection through overlays are directly associated with pavement deterioration and maintenance problems. During the early 1960s a process was developed using a composition of 25 percent ground tire rubber reacted with 75 percent hot asphalt. This process has been in full-scale field projects in the form of stress-absorbing seal coats and interlayers and as waterproof membranes. Results from approximately 3200 lane-km (2000 lane-miles) of construction clearly show that this basic elastomeric material performs as a waterproof membrane and has a high capacity to absorb direct tensile, flexural, and shearing stresses. The paper reviews the performance of the asphalt-rubber seal coats placed 1967 and the present state of the art of design and construction. It further reviews the potentials of stress-absorbing membranes placed to (a) prevent reflective cracking of overlays placed over both flexible and rigid pavements; (b) provide bridge deck protection; (c) control differential movement of existing pavements constructed over expansive clays; (d) provide economical construction for low-volume roadways; and (e) provide improved elastomeric sealing of cracks and joints.
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Supplemental Notes:
- Publication of this paper sponsored by Committee on Characteristics of Nonbituminous Components of Bituminous Paving Mixtures. 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:
- Morris, Gene R
- McDonald, Charles H
- Publication Date: 1976
Media Info
- Media Type: Print
- Features: Figures; Photos; References;
- Pagination: pp 52-58
- Monograph Title: Asphalts, aggregates, mixes and stress-absorbing membranes
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Serial:
- Transportation Research Record
- Issue Number: 595
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Asphalt; Interfaces; Overlays (Pavements); Pavement cracking; Rubber; Seal coats; Stresses; Waterproofing materials
- Old TRIS Terms: Interlayer spaces
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 00148658
- Record Type: Publication
- ISBN: 0309025648
- Files: TRIS, TRB
- Created Date: Mar 30 1977 12:00AM