Asphalt Rubber Technology Information Center
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Asphalt Rubber Hot Mix-Gap Graded Thickness Determination Guide (Interim)
Design guide for determining the thickness of a gap graded asphalt rubber hot mix (ARHM-GG) based on the thickness of a conventional dense graded AC overlay
designed using Caltrans...
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Asphalt Rubber Standard Practice Guide
With the rapid growth of the City of Phoenix, islands of non-paved streets developed causing dust and  bottlenecks that had to be paved.  These were low-volume
streets with not willing property owners to pay for the cost of construction.  Alternate...
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Construction Guidelines for Crumb Rubber Modified Hot Mix Asphalt - Interim Report
In recent years there has been increased interest in the use of crumb rubber modified hot mix asphalt pavements.  This report presents the current technology for the
construction of CRM HMA pavements.  The major component of CRM is scrap tire rubber.  The agency currently...
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Construction Practices - Construction Considerations for Production and Placement of Asphalt-Rubber Pavements
Provides general guidelines for the construction of hot mixes using the dry or wet process.  Includes information on blending (wet process), hot plant operations and
hook up, transportation, laydown, compaction and QC...
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Data Collection and Analyses Pertinent to EPA’s Development of Guidelines for Procurement of Highway Construction
Products Containing Recovered Materials Volume 1- Issues and Technical Summary Final Report
The primary objective of this study is to prepare a base of quantitative and qualitative information relating to the writing of guidelines for government... Read More

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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Guide Specification for Open, Dense, and Gap-Graded Asphalt Concrete Pavements with Asphalt-Rubber Binder
This specification covers material, equipment, and construction procedures for an asphalt concrete pavement using a reacted asphalt-rubber binder... Read More

Polymer Modified Bitumen: Laboratory Evaluation, Construction Guidelines and Field Experience
The abundance of asphalt compatible polymers now available makes it possible to improve almost every aspect of paving.  It is crucial, however, that the various
physical characteristics, construction constraints, and ultimate cost-benefits be understood.  To this end, numerous standards for quality testing...
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Short-Term Guidelines to Improve Crumb Rubber Modified Asphalt Concrete Pavements
The objective of this study was to optimize the performance of crumb rubber modified asphalt-concrete pavements through the development of materials and
construction specifications, mixtures design and testing procedures, binder testing procedures, and quality control...
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Specification Guidelines
This specification is intended to be a guide for highway agencies.  Appropriate modifications should be made to reflect local conditions and... Read More

Summary of Comments on Asphalt Rubber Procurement Guideline
On February 20, 1986, the Environmental Protection Agency (EPA) proposed a “Guideline for Federal Procurement of Asphalt Materials Containing Ground Tire
Rubber for Construction and Rehabilitation of Paving Surfaces”.  This report summarizes the comments received...
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Summary of Research on Asphalt-Rubber Binders and Mixes Volume 1
This report digests the results obtained from the two-year asphalt-rubber research study on... Read More

Standard Practice for Use of Scrap Tires in Civil Engineering Applications
This practice provides guidance for testing the physical properties and gives data for assessment of the leachate generation potential of processed or whole scrap tires
in lieu of conventional civil engineering materials, such as stone, gravel, soil, sand, or other...
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Technical Guidelines: Construction of Bitumen Rubber Seals
This document comprises recommendations on materials and methods of construction for surface treatments in which a bitumen-rubber binder is used.  It includes, in
particular, recommendations on the bitumen and the rubber to be used, on the preparation and properties of the bitumen-rubber blends...
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Thin is in! The Development of the Caltrans Reduced Thickness Guidelines
In 1978, in its quest to find a more durable mix for the snow region where tire chains are used and the design life was not being achieved, Caltrans began experimenting
with crumb rubber in asphalt mixes. The first field trial using Asphalt-Rubber was in 1980. Laboratory research indicated that crumb rubber modified...
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