BS EN 12697-18:2017 PDF Download

BS EN 12697-18:2017 is a standard that outlines two test methods for determining the binder drainage of bituminous mixtures. The first method, called the basket method, directly measures the binder drainage but may experience some limitations when used on mixtures with fibres or higher mortar content. This method can be used to determine binder drainage for different binder contents or with a single binder content, eliminating the need for repeated testing. It also allows for the quantification of the effects of varying fine aggregate types or the inclusion of anti-draining additives.

The second method, known as the beaker method, is applicable to asphalt materials that are not porous asphalt or to porous asphalt with fibres. Like the basket method, it can be used to determine binder drainage for different binder contents or with a single binder content, eliminating the need for repeated testing. It also allows for the quantification of the effects of varying fine aggregate types or the inclusion of anti-draining additives.

These test methods provide a standardized approach for evaluating the drainage properties of bituminous mixtures, which is important for assessing their performance and durability.