AS 1141.66:2022 PDF

AS 1141.66:2022 PDF

Specifies method for determining methylene blue adsorption value (MBV) for natural sands, manufactured sands, crusher dusts and mineral fillers used in asphaltApplies to aggregate of less than 5 mm nominal size and may be used for both natural and manufactured sands. Tests the passing 75 m fraction of a laboratory dried, unwashed fine aggregate sample. Test may be applied to fillers from baghouse fines or from ground limestone products or to mixtures of these two materials.

This document specifies a method for determining the methylene blue adsorption value (MBV) for natural sands, manufactured sands, crusher dusts and mineral fillers used in asphalt.

This method applies to aggregate of less than 5 mm nominal size and may be used for both natural and manufactured sands. The application of this test for slag, other artificial aggregate or for recycled aggregate has not been evaluated. The method tests the passing 75 μm fraction of a laboratory dried, unwashed fine aggregate sample.

For mineral fillers for asphalt, the test may be applied to fillers from baghouse fines or from ground limestone products or to mixtures of these two materials. The test is not suitable for cement or fly ash fillers. By definition, mineral fillers are 90 % or more passing the 75 μm sieve, therefore, the test applies to the total sample of mineral filler and not to a test portion.