DESIGN AND CONSTRUCTION OF ASPHALT PAVING MATERIALS WITH CRUMB RUBBER MODIFIER

This document is a concise overview of the terminology, processes, products, and applications of crumb rubber modifier (CRM) technology. This technology includes any use of scrap tire rubber in asphalt paving materials. In general, CRM technology can be divided into two categories, the wet process and dry process. When CRM is incorporated into an asphalt paving material, it will modify the properties of the binder (asphalt rubber) and act as a rubber aggregate (rubber-modified hot-mix asphalt). The use of asphalt rubber crack and joint sealant is common across the country and is routinely used by many state maintenance crews. A surface treatment using an asphalt rubber spray application is called a stress-absorbing membrane (SAM). The use of CRM in hot-mix asphalt paving materials has broad variability and potential. Composite designs with CRM paving materials are a two-layer system and a three-layer system. The growing nationwide interest in alternative uses for scrap tires has provided CRM technologists with the catalyst to develop new concepts for applying CRM. The major interest has been to develop generic dry process mixes and a continuous blending wet process. There are two principal unresolved issues related to the use of CRM in asphalt paving materials. On the national level, the ability to recycle asphalt paving mixes containing CRM has not been demonstrated. At the state and local level, these modified asphalt mixes must be field evaluated to establish expected levels of performance.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1992/1339/1339-001.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=DESIGN+AND+CONSTRUCTION+OF+ASPHALT+PAVING+MATERIALS+WITH+CRUMB+RUBBER+MODIFIER&author=M.+Heitzman&publication_year=1992
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309052033
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1339, Recycled Tire Rubber in Asphalt Pavements. 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
• Authors:
  • Heitzman, Michael
• Publication Date: 1992

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 1-8
• Monograph Title: Recycled tire rubber in asphalt pavements
• Serial:
  • Transportation Research Record
  • Issue Number: 1339
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Asphalt rubber; Crumb rubber; Definitions; Energy absorbing materials; Future; Hot mix asphalt; Recycling; Research; Sealing compounds; Stresses; Technology; Tires
• Uncontrolled Terms: Future research
• Old TRIS Terms: Stress absorbing membranes
• Subject Areas: Geotechnology; Highways; Materials; Research; Vehicles and Equipment; I31: Bituminous Binders and Materials; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 00624914
• Record Type: Publication
• ISBN: 0309052033
• Files: TRIS, TRB
• Created Date: Sep 11 1993 12:00AM