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A simple test procedure has been developed that greatly speeds the determination of the asphalt content of hot-mix bituminous mixtures. It involves a brief but thorough mixing of standard quantities of a bituminous mixture and trichloroethylene. The transmittance of light by the asphalt-trichloroethylene solution is then measured and correlated with the asphalt content of the mixture. The method takes about 5 min and uses reasonably inexpensive equipment that is highly portable. Preliminary tests indicate that the new method is as accurate as existing methods.
Martinez Chavez, JJ
SUR IIIA #751, Col. Sector Popular, Mexico, D.f.,
School of Civil Engineering, Purdue University, Grissom Hall, West Lafayette, IN
Stock #: JTE10317J