scope:

1. Scope

1.1 These test methods cover procedures for determining the permeability of bituminous mixtures. These methods measure the rate at which air can be forced (pressure system) or drawn (vacuum system) at low pressure through bituminous mixtures.

1.2 These test methods cover four different procedures: two laboratory tests and two field tests. Field and laboratory tests can be performed by using either the pressure system or the vacuum system.

1.3 The values stated in inch-pound units are to be regarded as the standard. The metric equivalents are rationalized, rather than exact mathematical conversions. (To rationalize is to round completely a converted value to a popular standard figure compatible with noncritical components, interchangeable parts, or other normal sizes in a series).

1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.