Asphalt Rubber Technology Information Center
© 2015 - Rubber Pavements Association (RPA). All rights reserved.
Feasibility of Using Crumb Rubber Modifier in Hot-Mix Asphalt Pavement Applications in Puerto Rico
This report presents the findings of a study to assess the feasibility of using crumb rubber modifier (CRM) in hot-mix asphalt (HMA) pavement applications in Puerto
Rico, as required by Section 1038 (d) of the 1991 Intermodal Surface Transportation Efficiency Act (ISTEA).  The study was undertaken...
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Field Testing and Control of Bitumen-Rubber
This paper will first discuss the more important properties of bitumen-rubber and their possible relation with performance and then some practical aspects in field control
and testing...
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Five Years with Rubber Asphalt Seals
The technology of rubber asphalt seals, developed for Saskatchewan is unique in North America and has resulted from sustained effort.  The quality of the product and
the success rate in long term performance have improved each year.  Once the problem...
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Great Innovation with a Process of Hot In Place Recycling with Silted Porous Asphalt Concrete Implemented on the A1
Motorway in the North of France in 1984 and 1985
Brief report on the hot mix place recycling of an asphalt rubber hot mix... Read More

Highlights of Technical Papers Given at Asphalt-Rubber Conference in Graz, Austria March 16, 1988
This paper includes test data about abatement and other information on the reduction of traffic noise with the use of... Read More

Hot-Mix Trials with Polymer Asphalt Cement – A Construction Report (1987,1988)
Polymer modified asphalt cements are claimed to produce more durable hot-mix pavements.  The Ontario Ministry of Transportation constructed four trials using a
proprietary polymer modified asphalt cement called “Styrelf” to establish the mixing, handling, laying, compaction and long term performance...
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HVS Evaluation of Proposed Rehabilitation Measures for the Warden-Villiers Section of National Route N3
Four test sections consisting of: (1) a rubber-modified asphalt on asphalt-rubber interlayer; (2) rubber modified asphalt; (3) semi gap-graded asphalt on asphalt-rubber
interlayer; and (4) asphalt-rubber surface treatment were constructed on an existing road with extensive...
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Implementing End Result Specifications: QC/QA/ERS/TQM
Contractors and their suppliers have generally developed the necessary capabilities to meet the new QC sampling, testing and analysis requirements associated with
ERS, and without too much trauma.  Agency retesting and referee protocols are available to deal with testing...
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Improved Hot Mix Asphalts Containing Reclaimed Rubber
Tests have been carried out to determine the extent of the interaction between asphalt cement and reclaimed rubber from used tires, and also the void content and the
Marshall flow and stability of hot mix asphalts made therefrom, In addition the flexural properties...
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In-Situ Pavement Retreading with A.R.C. 600
The in-situ pavement retread process consists in recreating, from a damaged pavement unsuited to usual traffic, an homogenous and stable structure.  Existing
materials are therefore retreaded in-situ with a binder and possibly complementary materials...
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Laboratory Investigation of Polymer Modified Bitumens
This paper deals with laboratory characterization of various pure and polymer modified bitumens, in which five biymens from four sources and six polymers of different
types were used.  The effects of base bitumen and polymer type and content on...
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Load-Associated Crack Movement in Road Pavements
Reports on the results of crack movement under traffic as measured using a crack activity meter (CAM) under traffic loading.  The CAM is attached to the pavement
using a quick epoxy and measures horizontal and vertical crack movements...
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Low Noise Road Surfaces: A State-of-the-Art Review
This paper provides a review of how vehicle noise emission and propagation is influenced by road/street surface design. The review is based partly on the author's own
experiments, partly on information collected from other...
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Low Temperature Performance of Scrap Tire Rubber Modified Asphalt Concrete
The low temperature performance of rubber-modified asphalt concrete systems was investigated through thermal stress restrained specimen tests.  Low temperature
TSRST tests on surface grafted, regular crumb rubber-modified and unmodified asphalt concrete mixes yielded similar results.  The small...
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Low-Temperature Behavior of Hard Bitumens: Experiments and Modeling
To avoid rutting, the use of hard bitumens is wearing courses has been expanded.  However, this may lead to surface cracking in asphalt mixes due to thermal stresses
induced by low-temperature conditions.  To improve understanding of this phenomenon, five binders of different crude and manufacturing origin...
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Mode of Loading in Reflective and Flexural Fatigue Cracking- A Numeric Evaluation
Consulpav International is working closely with the University of Minho in Portugal under a contract from the RPA to develop a mechanistic procedure for overlay design
that directly take into account the mechanism of reflective cracking as well as classical flexural fatigue cracking.  The problem of properly...
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Modification of Paving Asphalts by Digestion with Scrap Rubber
The service performance of sprayed surface treatments laid where traffic stressing is severe or where the existing pavement is cracked can be significantly improved if
comminuted scrap rubber is digested in the asphaltic cement before spraying.  Work has been dome to identify the factors, which are...
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Monitoring of Bitumen-Rubber Applications
Bitumen-rubber is a mixture of bitumen, granulated rubber reclaimed from old vehicle tires and additives such as extender oils and/or diluents.  The product can either
manufactured on site in the distributor or in a conveniently situated plant near the site.  Basically the process consists of the addition of a specified quantity of rubber to
hot bitumen...
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Noise Level Reduction Through SILENT ASPHALT
Silent asphalt is an extremely elastic road surface consisting of two layers, which can be put on any portative subconstruction and road surface without joints in
thickness of three to eight cm.  The examinations carried out on the silent asphalt test...
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Ontwikkeling van een mengselontwerpmethode voor de regenatie van oud rubberasfalt / Development of a mixture
design method for the regeneration of old rubber asphalt
This report is written in Dutch, no summary available... Read More
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