Asphalt Rubber Technology Information Center
© 2015 - Rubber Pavements Association (RPA). All rights reserved.
A Manual on the Use of Lightweight Aggregate in Flexible Pavement Systems
This manual has been prepared for use as a guide for lightweight aggregate producers who are interested in the use of their products in the field of flexible pavements.  
It should also be useful to contractors who may be using lightweight aggregates for the first...
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AASHTO Crumb Rubber Modified (CRM) 1993 Cost Survey
Reports the result of the 1993 survey for CRM hot mix asphalt pavements... Read More

Advances in Technology of Asphalt Paving Materials Containing Used Tire Rubber
Reports on two processes, one wet and one dry, for the addition of CRM to pavements.  The wet process uses extender oil and polymers to make a binder that is
storable up to eight days.  The dry process is a generic process...
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Advantages of Asphalt-Rubber Binder for Porous Asphalt Concrete
Different experimental sections have been made in France, in the 1970s, without significant results.  The approach until then seemed too empiric to achieve a reliable
solution which corresponds to a necessity (rain doubles the risk of accident on dense asphalt concrete pavement).  Since 1982, the laboratory...
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Air Monitoring Survey: Asphalt Paving Operations Interstate 8, Dateland, Arizona
The objective of the air monitoring survey was to obtain additional information about potential air contaminants associated... Read More

Ambient, Ground Rubber Crumb
In summary, ambient ground rubber crumb should be specified for most applications due to both its superior properties and lower cost... Read More

An Analysis of the Mechanism of Microdamage Healing Based on the Application of Micromechanics First Principles of
Fracture and Healing
The fatigue process is viewed as the result of the competing processes of crack growth and crack healing.  The crack growth or damage process is one of microcrack
development and growth and ultimately coalescence of microcracks and propagation in the form...
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An Anchor to Crumb Rubber Markets
The purpose of this paper is to familiarize the reader with the paving material asphalt-rubber (A-R) by providing historical perspective on its development and obstacles
to its development.  A-R has been a constant and stable market for crumb rubber...
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An Approach to Examine Thermal Fatigue in Asphalt Concrete
The research described presents an approach to examine mixture resistance of thermal fatigue and applies this approach to evaluate unmodified and crumb-rubber
modified (CRM) mixtures.  A slow frequency beam fatigue test was used to measure...
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Analysis of Asphalt-Rubber Emissions
Brief summary of study of emissions from asphalt rubber spray applications.  Samples were collected and tested for: three volatile organic compounds (benzene,
toluene, and xylene); total...
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Applicability of Asphalt-Rubber Membranes in Reducing Reflection Cracking
Describes the general characteristics of the asphalt rubber used; the various asphalt rubber membrane systems available; surface preparation requirement, design
considerations and construction details.  Discusses five case histories on the performance...
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ARM-R-Shield  Means Savings
This report reports the cost advantages and benefits to using ARM-R-Shield... Read More

Asphalt Crack Sealing, the “ins” and the “outs” as well as the “whys, whens, hows, what with” and the “should I’s”
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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Asphalt Revetments for Slope Protection in the Arctic
From experience in the Netherlands and elsewhere in Europe, it has been demonstrated that slope protection of coastal embankments subjected to heavy wave action
can be accomplished with lining systems made of mixtures of asphalt and mineral aggregate.  In this study properties of such...
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Asphalt Rubber Overlay Systems
Summary of the performance of two three-layer systems constructed near Flagstaff and Phoenix, AZ.  The three-layer system uses an asphalt rubber interlayer
between open graded leveling and surface...
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Asphalt Rubber Recycling? State Tests Will Shed Light
A discussion on completed and planned projects which are looking into the recyclability of pavements containing crumb rubber.  New Jersey and Michigan have
completed recycling projects.  Emissions information is available from the New Jersey...
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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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Asphalt/Rubber Fume Pilot Study (Final)
The use of recycled rubber materials, as a supplement in asphalt binder in road paving was the subject of this occupational exposure assessment.  United States
federal legislation (1991 Intermodal Surface Transportation Efficiency Act, Section 1038) requires that a specified...
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Asphalt-Rubber Aging Study
The report shows the react & test specimens, aged by thin film oven test and test residue... Read More

Asphalt-Rubber Binder Specifications
Third draft of a proposed asphalt-rubber binder specification for Caltrans... Read More
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