New Standard from Last Update.

1. SCOPE

1.1 This standard prescribes two methods of test for determination of bitumen content in bituminous paving mixtures, namely, Solvent Extraction Method (Method A) and Ignition Method (Method B).

1.2 Method A covers the extraction of bituminous component from paving mixture using trichloroethylene solvent. Then the bitumen content is calculated by difference from the mass of the extracted aggregate, moisture content, and mineral matter in the extract and expressed as mass percent of moisture-free mixture.

1.3 In Method B, bituminous paving mixture is ignited in a furnace at 540 °C to burn off all the bitumen. The bitumen content is then calculated by difference between the mass of the total specimen and the mass of the residual aggregate and moisture content and expressed as mass percent of moisture-free mixtures.

2. REFERENCES

IS 245 : 2020 Specification for trichloroethylene, technical (fourth revision)

IS 334 : 2002 Glossary of terms relating to bitumen and tar (third revision)