Asphalt Rubber Technology Information Center
© 2015 - Rubber Pavements Association (RPA). All rights reserved.
Development and Construction of Asphalt Rubber Stress Absorbing Membrane
This paper first covers a brief history of the asphalt-rubber experiments and development by the Arizona DOT beginning with the first seal coat placed in 1967.  It
covers knowledge gained through laboratory experiments as to the reaction that occurs when variations...
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Development of a Crumb Rubber Modified (CRM) Asphalt Concrete Mix Design
The objective of this project was to develop an asphalt mix design method incorporating crumb rubber and using the “wet” or “dry” method of producing Crumb Rubber
Modified Asphalt (CRM).  Several resurfacing projects...
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Development of a Hallow Cylinder Tensile Tester to Obtain Mechanical Properties of Bituminous Paving Mixtures
A new hollow cylinder tensile test (HCT) device was developed, which can be used to obtain fundamental properties of asphaltic paving mixtures, such as creep
compliance, tensile ...
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Development of a Physical Property Specification for Asphalt-Rubber Binder
The performance of projects incorporating asphalt-rubber binders has been inconsistent.  Thus, a method was needed to provide an understanding of binder physical
properties associated with the desirable performance and to quantify them for specification...
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Development of Asphalts and Pavements Using Recycled Tire Rubber - Phase I: Technical Feasibility
This report documents the technical progress made on the DOE funded project “Development of Asphalts and Pavements Using Recycled Tire Rubber” for the time
period covering September 1, 1994 through...
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Development of Criteria for Durability of Modified Asphalt - Final Report
A laboratory investigation was conducted to evaluate the effects of a few promising modifiers on the long-term aging characteristics of typical asphalt cements and
asphalt concrete mixtures used in Florida.  The seven...
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Development of Criteria for the Use of Asphalt-Rubber as A Stress-Absorbing Membrane Interlayer (SAMI)
This report documents over 2 years of research efforts to characterize asphalt-rubber mixtures to be used in Stress-Absorbing Membrane Interlayers (SAMI).  The
purpose of these SAMI’s is to retard or prevent reflection cracking in...
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Development of Improved Mix and Construction Guidelines for Rubber Modified Asphalt Pavements
The purpose of this paper is to evaluate the use of one type of rubber-modified asphalt paving mixture in road construction.  Moreover, it is to develop guidelines
indicating how these mixes can best be utilized in the U.S. road...
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Development of New Products and Technologies: A European Contractor’s Experience
Surface Dressings are executed using two main families of binder.  For decades, road research laboratories have tried to develop a binder which would combine the
advantages of both families.  In 1979, we initiated a comprehensive research program that extended over 3 years, involving tests carried...
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Development of Rubber and Asphalt Binders by Depolymerization and Devulcanization of Scrap Tires in Asphalt
Scrap tires in three forms - the crumb rubber 60 minus mesh, crumb rubber 20 minus mesh, and buffed rubber were subjected to depolymerization/ devulcanization by
applying heat, high shear and the combination of both.  Different reaction temperatures and times of reaction were applied.  The reaction...
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Development of Superior Asphalt Recycling Agents Phase 1: Technical Feasibility
These report documents the technical progress made on the DOE funded project “Development of Superior Asphalt Recycling Agents” for the time period covering
August 2, 1994 through August 1, 1995.  Cost sharing for this study is being supplied by the Texas...
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Dewey-Yarber Wash – Membrane Encapsulated Subgrade Experimental Project – Final Report
The purpose of this project was to determine whether a partially encapsulated subgrade pavement structure could functionally perform on a low volume highway.  A ten-
mile highway construction project on State Route 169 (SR 169) was selected for this project...
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Dewey-Yarber Wash Asphalt Rubber Partially Encapsulated Subgrade
In 1977, a very novel experimental application of asphalt rubber was used to build a low volume highway pavement between the town of Dewey and Interstate 17 on
State Route Highway 169.  Several experimental pavement sections were placed to determine to what degree partial ...
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Discarded Tires in Highway Construction
Concurrently, the large quantity of discarded passenger tires constitutes a costly ecological problem in this country.  Various methods have been developed to utilize
this waste...
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Discarded Tires in Highway Construction - Asphalt-Rubber Used As an Interlayer Demonstration Project No. 37 –
Construction Report
Construction report on the use of asphalt-rubber stress absorbing membrane interlayer used over a deteriorated unreinforced PCC pavement.  Provides information on
surface preparation, construction operations...
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Discarded Tires in Highway Construction - Construction Report
This report covers the construction of two stress-absorbing membrane interlayer (SAMI) projects in Pennsylvania.  The SAMI material consisted of either an AC-20 or H-
1 class asphalt with 33 percent granulated, reclaim rubber added.  Different contractors, using slightly ...
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Discarded Tires in Highway Construction - Evaluation of Asphalt-Rubber as a Stress Absorbing Interlayer and a Binder
for Seal Coat Construction
In the latter part of 1978, ten experimental sections were constructed in Florida to evaluate the field performance of asphalt-rubber material when ... Read More

Discarded Tires in Highway Construction - The Evaluation of Rubberized Asphalt and Fiber-Pave as Stress Absorbing
Membrane Interlayers in Preventing Reflective Cracking in Bituminous Overlay Construction
The objective of this project was to compare the performance of two different stress absorbing membrane interlayers with our... Read More

Discarded Tires in Highway Construction - Use of Granulated Rubber from Discarded Tires in Seal Coat Construction
The modification of bituminous materials with various kinds of rubber for use in seal coat construction has been used in South Dakota as long ago as the mid 1950’s.  
The use of ground rubber from discarded tires...
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Discarded Tires in Highway Construction Using Precoated Aggregate
This report discusses a single bituminous surface treatment using an asphalt-rubber binder and pre-coated aggregate over a bleeding and cracked ... Read More
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