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ASTM D6307 is an internationally recognized standard test method titled "Standard Test Method for Asphalt Content of Asphalt Mixture by Ignition Method." It defines a precise procedure for determining the asphalt binder content in asphalt mixtures (like hot-mix asphalt) by igniting and burning off the binder in a specialized furnace. This method provides a quantitative measure of the asphalt content in a mixture for quality control, specification acceptance, and mixture evaluation studies.
The asphalt sample, often obtained from the field or plant, must be prepared. It is typically heated just enough to allow for separation (if necessary) and then cooled to room temperature before weighing. 2. Initial Weighing and Ignition astm d6307 pdf
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During the high-heat ignition process, certain soft aggregates (such as limestone or dolomite) can experience a slight loss of mass due to the combustion of trace minerals or structural water. If this is not accounted for, the test will incorrectly report an artificially high asphalt binder content. The asphalt sample, often obtained from the field
). Modern NCAT (National Center for Asphalt Technology) furnaces feature an internal, automated balance that weighs the sample continuously during the burn.