AS 2341.28:2002 (R2013) PDF Download

AS 2341.28:2002 (R2013) is a standard that outlines the procedures for determining the stone coating ability and water resistance of bitumen and related roadmaking products, specifically bituminous emulsions. The purpose of this standard is to assess the ability of the emulsion to uniformly and thoroughly coat aggregates and to evaluate its resistance to water stripping.

The standard includes a method for estimating the degree of coating achieved by the bituminous emulsion on aggregates. This involves conducting a visual examination of the coated particles to determine if the coating is uniform and complete. The evaluation is typically done by observing the color, texture, and coverage of the coated surface.

Another aspect covered in the standard is the determination of the water resistance of the emulsion-coated aggregates. The method involves subjecting the coated particles to a specified immersion in water and subsequently assessing the degree of stripping that occurs. This assessment allows for an estimation of the resistance of the emulsion coating to the damaging effects of water.