Determination of bitumen residue by moisture analyser

This test method involves a rapid quantitative determination of the residue in bitumen emulsion using a moisture analyser. It is applicable to all non-solvent-containing emulsion types, anionic, cationic, non-polymer-modified or polymer-modified bitumen emulsions. 

The residue obtained from this test method may also be subjected to further rheological characterisation tests. 

A sample of bitumen emulsion, minimum 1 g and up to 3 g, is placed in a moisture analyser equipped with a heating element and capable of running either isothermally or in a programmable temperature-gradient mode. 

The instrument calculates the residue automatically at the end of the run. More details can be found in ASTM D 740 4 (2012). 

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