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

SIGNIFICANCE AND USE
The sorption of water can result in an increase in weight and a resultant potential degradation of the properties of the 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.
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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Publication Date
31-May-2006
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ASTM C1104/C1104M-00(2006) - 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C1104/C1104M − 00 (Reapproved2006)
Standard Test Method for
Determining the Water Vapor Sorption of Unfaced Mineral
Fiber Insulation
ThisstandardisissuedunderthefixeddesignationC1104/C1104M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope C390 Practice for Sampling and Acceptance of Thermal
Insulation Lots
1.1 This test method covers the determination of the amount
E691 Practice for Conducting an Interlaboratory Study to
of water vapor sorbed by mineral fiber insulation exposed to a
Determine the Precision of a Test Method
high-humidity atmosphere. This test method is applicable only
to fibrous base material and binder.The results obtained by this
3. Terminology
test method cannot be used in describing faced products, since
3.1 Definitions of Terms Specific to This Standard:
the facing is not tested by using this test method.
3.1.1 The term sorption has been adopted for this test
1.2 The water vapor sorption characteristics of materials
method,sincemineralfiberinsulationmay absorbwaterwithin
may be affected by conditions such as elevated temperatures or
its bulk when viewed macroscopically, while it adsorbs water
chemical exposures. Values obtained as a result of this test
onto individual fibers on a microscopic scale.
method may not adequately describe the water vapor sorption
(1) sorption—refers to the taking up and holding of matter
characteristics of materials subjected to these conditions.
by other matter by various processes such as absorption and
adsorption.
1.3 The values stated in either SI units or inch-pound units
(2) absorption—referstothetakingupofmatterin-bulkby
are to be regarded separately as standard. The values stated in
other matter; for example, the penetration of substances into
each system may not be exact equivalents; therefore, each
the bulk of another solid or liquid.
system shall be used independently of the other. Combining
(3) adsorption—refers to surface retention or adhesion of
values from the two systems may result in non-conformance
anextremelythinlayerofmoleculestothesurfacesofsolidsor
with the standard.
liquids with which they are in contact.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Test Method
responsibility of the user of this standard to establish appro-
4.1 The insulation is dried to a constant weight and exposed
priate safety and health practices and determine the applica-
to a high-humidity atmosphere for 96 h. The amount of water
bility of regulatory limitations prior to use.
sorbed from the vapor phase is the difference in specimen
weights, and is expressed in either weight or volume percent.
2. Referenced Documents
5. Significance and Use
2.1 ASTM Standards:
C167 Test Methods for Thickness and Density of Blanket or 5.1 The sorption of water can result in an increase in weight
Batt Thermal Insulations
and a resultant potential degradation of the properties of the
C302 Test Method for Density and Dimensions of Pre- insulation.
formed Pipe-Covering-Type Thermal Insulation
6. Apparatus
C303 Test Method for Dimensions and Density of Pre-
formed Block and Board–Type Thermal Insulation 6.1 Air-circulating oven, capable of maintaining a tempera-
ture between 102° and 121°C [215° and 250°F].
6.2 Desiccator, with calcium chloride as a desiccant.
This test method is under the jurisdiction of Committee C16 on Thermal
6.3 Scale, accurate to 60.1 % of specimen weight.
Insulation and is the direct responsibility of Subcommittee C16.33 .
Current edition approved June 1, 2006. Published August 2006. Originally
6.4 Environmental test chamber, capable of maintaining a
approved in 1988. Last previous edition approved in 2000 as C1104/C1104M – 00.
temperature of 49 6 2°C [120 6 3°F] and a relative humidity
DOI: 10.1520/C1104_C1104M-00R06.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or of 95 63%.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.5 Steel rule, graduated in 1 mm or 0.05 in. intervals with
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. depth gauge as described in Test Methods C167.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C1104/C1104M − 00 (2006)
6.6 Sealable polyethylene sample bags of a size large on a grid within the chamber in order to ensure air circulation
enough to accommodate the test specimens (for blanket, board, around the specimens. Protect the specimens from condensate
or pipe thermal insulations). dripping from the chamber ceiling by using a slanting false
roof immediately above the specimens.
6.7 Non-water-sorbing, non-corrosive tray with tight-fitting
lid measuring at least 15 by 15 cm [6 by 6 in.] (for loose-fill 8.4 Allow the specimens to remain in the environmental
insulations). chamber for 966 4 h at a temperature of 49° 6 2°C [120°6
3°F] and at a relative humidity of 95 6 3 %. Then place each
7. Sampling and Test Specimens
specimen in its own pre-weighed sample bag, seal the bag, and
remove from the chamber. Allow the bag containing the
7.1 Three specimens shall be tested, unless otherwise stated
specimens to cool to room temperature and weigh. Subtract the
in the appropriate material specification. These are to be
bag weight from the obtained weight. Record this as the
obtained from one representative package of insulation. Sam-
specimen weight after testing.
pling techniques should be in accordance with Practice C390.
7.2 For blanket and board products, the test specimen shall
9. Procedure B, for Loose-Fill Insulation Products
be of a size that can be conveniently tested in the environmen-
9.1 If it is necessary to determine volume percent, measure
tal chamber, but not smaller than 15 by 15 cm [6 by 6 in.] by
the length and width of the pre-weighed sample trays, using a
thefullsamplethickness.Forpipeinsulationproducts,usea15
steel rule. Apply the insulation at its nominal or requested
cm [6 in.] length and as much of the circumference as can be
thickness and density by pouring or blowing it into the sample
conveniently tested. For loose-fill products, the test specimen
tray. Measure the thickness of the specimens by means of a
shall consist of sufficient quantity of the material to fill a
depth gauge. Calculate the volume of the specimens.
preweighed container measuring at least 15 by 15 cm [6 by 6
9.2 Determine the moisture-free weight of each specimen in
in.], to a nominal depth at its nominal density.
the manner described in 9.2.1.
7.3 The insulation shall be tested without facing or
9.2.1 Weigh the sample tray containing the specimen. Place
jacketing, unless otherwise agreed upon by the purchaser and
thespecimeninanair-circulatingovenatatemperatureof102°
suppli
...

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