TESTS ON BITUMEN
Binder content by Ignition method
Code: This test is done as per ASTM D 6307 – 98.
Procedure:
- i) Oven-dry the HMA sample to constant mass at a temperature of 110±5°C or determine the moisture content of samples, so that the measured mass loss can be corrected for moisture. 10.3 Set the furnace temperature to 540±5°C.
- ii) WSamples can be placed in the furnace at significantly lower temperatures since the furnace will quickly heat to the desired temperature once the sample begins to burn. The furnace temperature is likely to increase during the ignition phase of the test.
- iii) Determine and record the mass of the sample tray(s) and catch pan to the nearest 0.1 g.. Evenly distribute the sample in the sample tray(s). Determine the mass of the sample, sample tray(s), and catch pan to the nearest 0.1 g. Calculate and record the initial mass of the sample (MB). 10.7 Heat the sample in the furnace at the specified temperature until the difference between consecutive measured mass loss does not exceed 0.01 % of the sample mass (MB) for three consecutive 1-min intervals.
- ii) This point shall be determined automatically by the furnace’s data collection system. 10.8 The furnace’s data collection system shall measure and record automatically the aggregate mass (MA) of the sample after ignition to the nearest 0.1 g. The mass shall be obtained immediately upon completion of tests by subtracting the mass loss measured by the furnace from the initial mass of the mix (MB).
Uses:
To determine the bitumen content of bitumen mix.