Unlike older solvent-based extraction methods (which use chemicals like trichloroethylene), the ignition method is faster, safer, and more environmentally friendly. The test involves heating a sample of the asphalt mixture in a furnace to a high temperature (typically around 538°C or 1000°F), causing the asphalt binder to burn off, leaving behind the aggregate. The difference in mass before and after ignition represents the asphalt binder content.
: Utilizes a furnace with an internal automated weighing system to monitor mass loss in real-time.
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State DOTs use this standard to verify that the asphalt delivered to a construction site matches the approved job mix formula (JMF). How to Access the ASTM D6307 PDF Legally astm d6307 pdf
To perform a test matching the ASTM D6307 standard, a laboratory must be equipped with specialized apparatus:
In civil engineering contracts, state departments of transportation (DOTs) explicitly require testing to be performed exactly "in accordance with ASTM D6307." Having the official document on file is legally protective. Where to Find the ASTM D6307 PDF
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 . : Utilizes a furnace with an internal automated
A sample of the asphalt mixture is heated in a furnace to a temperature of 538∘C538 raised to the composed with power C 1000∘F1000 raised to the composed with power F ) or a temperature recommended by the manufacturer.
Where to get the PDF
. This process involves heating a sample in an ignition furnace to burn off the asphalt cement, allowing technicians to calculate the binder percentage by comparing the sample's weight before and after ignition. ASTM International Core Objectives and Scope How to Access the ASTM D6307 PDF Legally
This factor is subtracted from future test results utilizing that exact aggregate source. Step 3: Loading the Furnace
A convection or direct-irradiation furnace capable of maintaining a temperature of 538°C (1000°F). It must feature an internal analytical balance capable of weighing the sample continuously during the burn.
To perform this test according to ASTM specifications, a laboratory must utilize: