Standard Test Methods for Classifying the Flexibility or Rigidity of Mineral Fiber Blanket and Board Insulation

SCOPE
1.1 These test methods cover the procedures for the classification of mineral fiber insulation as flexible, resilient flexible, semirigid, or rigid.
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.
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.

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ASTM C1101/C1101M-95 - Standard Test Methods for Classifying the Flexibility or Rigidity of Mineral Fiber Blanket and Board Insulation
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 1101/C1101M – 95
Standard Test Methods for
Classifying the Flexibility or Rigidity of Mineral Fiber
Blanket and Board Insulation
This standard is issued under the fixed designation C 1101/C1101M; 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 6. Sampling
1.1 These test methods cover the procedures for the classi- 6.1 A test sample shall consist of one representative package
fication of mineral fiber insulation as flexible, resilient flexible, of insulation. One test specimen measuring 12 in. by 12 in.
semirigid, or rigid. [305 by 305 mm] and of full thickness shall be randomly cut
1.2 The values stated in either inch-pound units or SI units from the sample for flexibility testing. If the rigidity portion of
are to be regarded separately as standard. Within the text, the the procedure is to be performed, a test specimen measuring 32
SI units are shown in brackets. The values stated in each in. [813 mm] long, and between 6 and 24 in. [152 and 610 mm]
system are not exact equivalents; therefore, each system must wide, and of full thickness shall be randomly cut from the
be used independently of the other. sample.
1.3 This standard does not purport to address all of the
7. Procedure
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 7.1 Test for Flexibility—Bend the 12 by 12-in. [305 by
305-mm] piece of insulation over the ⁄2 in. NPS iron pipe
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. through an angle of 90° and examine the outer surface for
visible rupture.
2. Referenced Documents
7.2 Test for Resilient Flexibility—If no rupture occurs after
2.1 ASTM Standards: undergoing the 90° bending in 7.1, release the bent insulation.
C 168 Terminology Relating to Thermal Insulating Materi- 7.3 If the insulation is not classified as flexible or resilient
als flexible, it should be tested in accordance with 7.4 to determine
the degree of rigidity.
3. Terminology
7.4 Test for Semirigidity and Rigidity—Place the 32 in. [813
3.1 Definitions—Terminology C 168 shall be considered as
mm] long piece of insulation on the two horizontal, parallel,
applying to the terms used in these test methods. ⁄2-in. NPS iron pipe supports spaced 30 in. [762 mm] apart.
After 5 min have elapsed, measure the sag of the insulation to
4. Significance and Use
the nearest 0.05 in. [1.3 mm] at the center of the span, from a
4.1 Classification of insulation relative to flexibility or
straight line connecting two points on the insulation’s surface
rigidity is useful in establishing installation and application
directly above the supports.
characteristics.
8. Interpretation of Results
5. Apparatus
8.1 Test for Flexibility—If there is no visible rupture,
5.1 Iron Pipe, ⁄2-in. NPS (outside diameter 0.840 in. [21.3
classify the material as flexible.
mm]) measuring at least 12 in. [305 mm] in length.
8.2 Test for Resilient Flexibility—If the insulation is classi-
5.2 Rigidity Tester, consisting of two horizontal, parallel,
fied as flexible in acco
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