Область применения

1.1 This test method covers the determination of the percent by mass of fine dust, clay or silt, or both, present as a coating on coarse aggregate particles. The nature of the fines adhering to the coarse aggregate is not determined.

Note 1-The nature of the fines can be determined by other tests such as Test Methods D2419 and D4318.

1.2 This proposed test method is intended for use with 50 mm (2 in.) maximum size aggregate and smaller.

1.3 The values shown in SI units are to be regarded as the standard, except for the frame size of testing sieves, for which inch-pound units are to be regarded as standard.

1.4 This standard does not purport to address all of the safety concerns, 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.