Standard Test Method for Determining the Water Vapor Sorption of Unfaced Mineral Fiber Insulation

SCOPE
1.1 This test method covers the determination of the amount of water vapor sorbed by mineral fiber insulation exposed to a high-humidity atmosphere. This test method is applicable only to fibrous base material and binder. The results obtained by this test method cannot be used in describing faced products, since the facing is not tested by using this test method.
1.2 The water vapor sorption characteristics of materials may be affected by conditions such as elevated temperatures or chemical exposures. Values obtained as a result of this test method may not adequately describe the water vapor sorption characteristics of materials subjected to these conditions.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the inch-pound units are shown in parentheses. The values stated in each system are not exact equivalents, therefore, each system must be used independently of the other.
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.

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09-Oct-2000
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ASTM C1104/C1104M-00 - Standard Test Method for Determining the Water Vapor Sorption of Unfaced Mineral Fiber Insulation
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:C1104/C1104M–00
Standard Test Method for
Determining the Water Vapor Sorption of Unfaced Mineral
1
Fiber Insulation
This standard is issued under the fixed designation C 1104/C 1104M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This test method covers the determination of the amount 3.1 Definitions of Terms Specific to This Standard:
of water vapor sorbed by mineral fiber insulation exposed to a 3.1.1 The term sorption has been adopted for this test
high-humidity atmosphere. This test method is applicable only method,sincemineralfiberinsulationmay absorbwaterwithin
to fibrous base material and binder.The results obtained by this its bulk when viewed macroscopically, while it adsorbs water
test method cannot be used in describing faced products, since onto individual fibers on a microscopic scale.
the facing is not tested by using this test method. (1) sorption—refers to the taking up and holding of matter
1.2 The water vapor sorption characteristics of materials by other matter by various processes such as absorption and
may be affected by conditions such as elevated temperatures or adsorption.
chemical exposures. Values obtained as a result of this test (2) absorption—refers to the taking up of matter in-bulk by
method may not adequately describe the water vapor sorption other matter; for example, the penetration of substances into
characteristics of materials subjected to these conditions. the bulk of another solid or liquid.
1.3 The values stated in either SI units or inch-pound units (3) adsorption—refers to surface retention or adhesion of
are to be regarded separately as standard. Within the text, the anextremelythinlayerofmoleculestothesurfacesofsolidsor
inch-pound units are shown in parentheses. The values stated liquids with which they are in contact.
in each system are not exact equivalents, therefore, each
4. Summary of Test Method
system must be used independently of the other.
1.4 This standard does not purport to address all of the 4.1 The insulation is dried to a constant weight and exposed
to a high-humidity atmosphere for 96 h. The amount of water
safety concerns, if any, associated with its use. It is the
sorbed from the vapor phase is the difference in specimen
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- weights, and is expressed in either weight or volume percent.
bility of regulatory limitations prior to use.
5. Significance and Use
2. Referenced Documents
5.1 The sorption of water can result in an increase in weight
and a resultant potential degradation of the properties of the
2.1 ASTM Standards:
C 167 Test Methods for Thickness and Density of Blanket insulation.
2
or Batt Thermal Insulations
6. Apparatus
C 302 Test Method for Density of Preformed Pipe-
2
6.1 Air-circulating oven, capable of maintaining a tempera-
Covering-Type Thermal Insulation
ture between 102° and 121°C (215° and 250°F).
C 303 Test Method for Density of Preformed Block-Type
2
6.2 Desiccator, with calcium chloride as a desiccant.
Thermal Insulation
6.3 Scale, accurate to 60.1 % of specimen weight.
C 390 Criteria for Sampling and Acceptance of Preformed
2
6.4 Environmental test chamber, capable of maintaining a
Thermal Insulation Lots
temperature of 49 6 2°C (120 6 3°F) and a relative humidity
E 691 Practice for Conducting an Interlaboratory Study to
3
of 95 63%.
Determine the Precision of a Test Method
6.5 Steel rule, graduated in 1 mm or 0.05 in. intervals with
depth gauge as described in Test Methods C 167.
1
This test method is under the jurisdiction of Committee C-16 on Thermal
6.6 Sealable polyethylene sample bags of a size large
Insulation and is the direct responsibility of Subcommittee C16.33 on Thermal
enough to accommodate the test specimens (for blanket, board,
Insulation Finishes and Vapor Transmission.
or pipe thermal insulations).
Current edition approved Oct. 10, 2000. Published December 2000. Originally
published as C 1104/C 1104M – 88. Last previous edition C 1104/C 1104M – 95.
2
Annual Book of ASTM Standards, Vol 04.06.
3
Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C1104/C1104M
6.7 Non-water-sorbing, non-corrosive tray with tight- 8.4 Allow the specimens to remain in the environmental
fitting lid measuring at least 15 by 15 cm (6 by 6 in.) (for chamber for 966 4 h at a temperature of 49° 6 2°C (120°6
...

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