Implementation of Testing Equipment for Asphalt Materials: Tech Summary
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2009-05-01
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Abstract:Three new automated methods for related asphalt material and mixture testing were evaluated under this study. Each of these devices is designed to reduce testing time considerably and reduce operator error by automating the testing process. The Therymolyne SSDetect, Instrotek CoreLok, and Instrotek CoreDry devices were evaluated throughout the state in nine district laboratories plus the Louisiana Transportation Research Center (LTRC) asphalt laboratory. The test methods for each of these devices were evaluated against the standard methods described in AASHTO T-84 and AASHTO T 166 (DOTD TR 304-03). Each laboratory used the SSDetect device to evaluate the Gsb (bulk specifi c gravity) and absorption properties of fi ne aggregates. The CoreLok device was used to evaluate the Gmb (bulk specifi c gravity) of Superpave gyratory compacted (SGC) asphalt mixtures. The CoreDry device was used to evaluate the dry weights of SGC asphalt mixtures.
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