Mechanistic - empirical pavement design guide implementation and pavement preservation strategies with asphalt rubber
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Date
Authors
Kaloush, Kamil, E.
Way, George B.
Belshe, Mark
Rodezno, Maria Carolina
Journal Title
Journal ISSN
Volume Title
Publisher
Document Transformation Technologies
Abstract
Paper presented at the 30th Annual Southern African Transport Conference 11-14 July 2011 "Africa on the Move", CSIR International Convention Centre, Pretoria, South Africa.
Asphalt-Rubber (AR) mixtures, with their great fleld performance, have received great attention from many transportation agencies world-wide. Current pavement design procedures do not specifically address the unique engineering properties that these mixtures offer. For example, the Mechanistic-Empirical Pavement Design Guide (MEPDG) did not include asphalt-rubber mixes as part of its calibration and Implementation in the USA. This paper addresses some issues on asphalt rubber mixtures implementation into the MEPDG. In addition, highlights of several studies conducted by the authors documenting benefits of the Asphalt Rubber Asphalt Concrete Friction Course (AR-ACFC) as a pavement preservation strategy. This includes results of laboratory materlal characterization tests, highway noise reduction, mitigation of daily thermal variances in Portland Cement Concrete pavements, improved skid resistance, reduced roughness, reduction of emission rates of tire wear per kilometer driven, and lower environmental Impact by having lower C02 emissions.
Asphalt-Rubber (AR) mixtures, with their great fleld performance, have received great attention from many transportation agencies world-wide. Current pavement design procedures do not specifically address the unique engineering properties that these mixtures offer. For example, the Mechanistic-Empirical Pavement Design Guide (MEPDG) did not include asphalt-rubber mixes as part of its calibration and Implementation in the USA. This paper addresses some issues on asphalt rubber mixtures implementation into the MEPDG. In addition, highlights of several studies conducted by the authors documenting benefits of the Asphalt Rubber Asphalt Concrete Friction Course (AR-ACFC) as a pavement preservation strategy. This includes results of laboratory materlal characterization tests, highway noise reduction, mitigation of daily thermal variances in Portland Cement Concrete pavements, improved skid resistance, reduced roughness, reduction of emission rates of tire wear per kilometer driven, and lower environmental Impact by having lower C02 emissions.
Description
This paper was transferred from the original CD ROM created for this conference. The material was published using Adobe Acrobat 10.1.0 Technology.
The original CD ROM was produced by Document Transformation Technologies Postal Address: PO Box 560 Irene 0062 South Africa. Tel.: +27 12 667 2074 Fax: +27 12 667 2766 E-mail: nigel@doctech URL: http://www.doctech.co.za
Keywords
Asphalt-rubber mixtures, Pavement design, Asphalt Rubber Asphalt Concrete Friction Course, Lover CO2 emissions, Mechanistic-Empirical Pavement Design Guide
Sustainable Development Goals
Citation
Kaloush, KE, Rodezna, MC, Way, GB & Belshe, M 2011, 'Mechanistic - empirical pavement design guide implementation and pavement preservation strategies with asphalt rubber', Paper presented to the 30th Annual Southern African Transport Conference, South Africa, 11-14 July. pp. 574-585