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Significance and Use
3.1 This test method is used to measure the rate of flow of air or nitrogen through refractory brick and monoliths and to thus determine the permeability of tested products.
3.2 This test method is useful in research and development for establishing the relative permeability of products within comparable classes. It may also be used to identify acceptable products for design purposes and to establish permeability criteria for specification acceptance.
3.3 It must be recognized that permeability can vary in different directions and different parts of a refractory due to factors such as forming procedure, grain size and distribution, and heat treatment.
1.1 This test method covers determination of the permeability of refractory brick and monoliths, from which suitable specimens can be cut, at room temperature.
1.2 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.2.1 Exceptions—The apparatus used in this standard is only available in SI units (Section 4). Also, some of the calculations must use SI units only.
1.3 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C1095 Practice for Calculating Precision Data on Refractories (C08) From Interlaboratory Test Results
ICS Number Code 81.080 (Refractories)