ASTM D6307-19 defines the standard ignition method for determining asphalt binder content in hot-mix asphalt by heating samples to approximately 540°C to measure weight loss. The standard covers both automatic furnace procedures and manual, external weighing methods, while requiring a calibration factor to account for aggregate degradation. Purchase the official standard at ASTM .
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 ASTM D6307 standard ensures that modern roads are built with the exact chemical balance required to withstand heavy traffic and severe weather. By mastering the ignition method, testing laboratories guarantee compliance, protect their workers, and optimize workflow speed. astm d6307 pdf
Requirements for reporting the results, including the expression of the hydrocarbon content in appropriate units.
Understanding ASTM D6307: Asphalt Content by Ignition Method ASTM D6307-19 defines the standard ignition method for
If the sample contains moisture, it must be dried to a constant mass or a separate moisture correction factor must be calculated.
Historically, laboratories used chlorinated solvents to extract bitumen from aggregate mixtures. Due to environmental regulations, health risks, and disposal costs associated with solvents like trichloroethylene, the industry shifted toward thermal extraction. ASTM D6307 provides a standardized, eco-friendly, and highly efficient alternative. Core Principles of the Ignition Method and highly efficient alternative.
To obtain an official, compliant copy for your laboratory or business, you can utilize the following avenues:
A quick internet search may yield links claiming to offer a free ASTM D6307 PDF . These are almost always: