ASTM D6307 is a standardized test method developed by ASTM International. It describes the procedure for determining the percentage of asphalt binder in hot-mix asphalt (HMA) or asphalt mixtures using an ignition furnace.

In the asphalt and construction industry, ensuring the correct asphalt binder content is critical to the durability and performance of pavement. One of the most critical and frequently used standards for this measurement is , "Standard Test Method for Asphalt Content of Asphalt Mixture by Ignition Method."

The standard provides detailed steps for preparing a test specimen:

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Practical tips for obtaining reliable results

Leaves behind clean aggregate that can immediately be used for sieve analysis (gradation testing). Core Components of the ASTM D6307 Test Method

Samples are typically prepared in a range of 1000g to 1500g. They are weighed to determine the initial mass ( MBcap M sub cap B 3. Ignition

It eliminates the need for hazardous solvents, making it a "green" alternative to older methods.

Requires lengthy washing and drying cycles.

An added benefit of the ASTM D6307 method is that the clean, binder-free aggregate remaining in the basket can be immediately used for a sieve analysis (gradation test) according to ASTM C136 or AASHTO T 30. This allows quality control technicians to verify not only the quantity of the asphalt binder but also whether the structural skeleton of the aggregate meets the required mix design specifications. 6. Accessing the ASTM D6307 PDF

Standardized reporting templates required by state Departments of Transportation (DOTs). How to Obtain the PDF

Historically, the asphalt industry used solvent extraction methods (like ASTM D2172) to separate binder from aggregate. However, the ignition method governed by ASTM D6307 has become the industry standard for several reasons: