BS EN 12697-47:2023

Bituminous mixtures. Test methods. Determination of the ash content of natural asphalts | Status: Current

1 Scope This document specifies a test method to determine the ash content in natural asphalts (including lake asphalts), binders containing natural asphalts or bitumens. For the method to apply, it is essential that any mineral matter in the binder be finely divided and cannot exceed a mass fraction of 45 %.