Asphalt Rubber Technology Information Center
© 2015 - Rubber Pavements Association (RPA). All rights reserved.
Heavy Vehicle Simulator Testing of Trail Sections for CALTRANS
The overall objective of this project is to evaluate the HVS developed by the CSIR (Council of Scientific and Industrial Research) of South Africa and the potential to
provide Caltrans with complete operational Accelerated Pavement Testing (APT) capabilities using the HVS system technology on high priority...
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Industrial Hygiene Report
The survey was conducted to evaluate employees’ exposures to air pollution emitted from crumb rubber modifier asphalt (CRM asphalt) during recycling and paving
operations.  The survey was requested by Greg Scott, assistant...
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Los Angeles County Department of Public Works Asphalt Rubber Chip Seal with Warm Mix Additive Demonstration
The Los Angeles County Department of Public Works placed an asphalt rubber warm mix chip seal demonstration on Smith Avenue in the unincorporated community of
Acton on August 26, 2010. This was the second project of this type placed in California in the summer of 2010 by Intermountain Slurry Seal, Inc. The...
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Mixed Roadway Surface Noise Measurements Results
The purpose of this study is to determine the difference in noise levels between several different types of asphalt.  The types of asphalt included in this study are:
dense grade asphalt, rubber asphalt (gap graded), rubber...
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Olympic Boulevard Asphalt Rubber Recycling Project
The project had two primary goals:  A) To determine the recyclability of Asphalt Rubber utilizing conventional mix design... Read More

Performance of Asphalt-Rubber Stress Absorbing Membranes (SAM) and Stress Absorbing Membrane Interlayers (SAMI)
in California
The State of California has been using asphalt-rubber on State highways on and off since the early 1970’s. It was felt that the asphalt-rubber would be better than other
cheaper maintenance treatments on highways that were in the last...
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PlusRide II Projects, Susanville, California
This project is located on U.S. 395 about 40 miles N.E. of Susanville, California and consisted of overlaying 9.4 miles with various asphalt-rubber products.  The
elevation is about 5, 000 feet and receives an annual precipitation of 8 to 10 inches.  In addition, frost occurs throughout the year while the range...
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Preliminary Study on Warm Mix Technologies with Asphalt Rubber - Final Summary Report
This report presents a summary of work on two separate topics. The first was to evaluate whether terminal blend rubberized asphalt is an effective product and is
eligible for the CIWMB grant program. Terminal Blends (TB) are binder materials that use finely ground (less than 40 mesh) crumb rubber...
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Report on the Status of Rubberized Asphalt Traffic Noise Reduction in Sacramento County
The purpose of this report is to document the effectiveness of rubberized asphalt as a traffic noise mitigation measure.  Rubberized asphalt is a bituminous mix,
consisting of blended aggregates, recycled rubber and binding agents.  The rubber is often obtained from...
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Runway Rehabilitation - Oceanside Municipal Airport
Hot Mix Locations (Oceanside) Airports 1” Asphalt-Rubber Open Grade... Read More

The Effects of Fibers and Rubber on the Physical Properties of Asphalt Concrete
This report describes the laboratory testing and a field installation of several fiber and rubber additives which, when used in asphalt concrete, purportedly provide
resistance to reflection cracking and surface abrasion by tire chains.  The products tested where...
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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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Tires as a Fuel Supplement:  Feasibility Study
This report is on the feasibility of using waste tires as a fuel supplement for cement kilns, lumber operations, and other industrial processes... Read More
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