The official ASTM D6307 PDF outlines two main approaches: (using an automated internal balance furnace) and Test Method B (using a manual external balance furnace). Method A is the industry standard due to its automation. Step 1: Sample Preparation

The basket is placed into the preheated ignition furnace (usually set to 538°C).

ASTM D6307 outlines strict precision statements to ensure repeatable results across different operators and laboratories.

Understanding ASTM D6307: The Standard for Asphalt Content by Ignition

) to ignite and completely burn away the liquid asphalt binder. By weighing the sample before and after ignition, the laboratory can calculate the exact loss of mass, which directly correlates to the binder content. Key Sections Found in the ASTM D6307 PDF

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