ASTM C712-14(2021)
(Test Method)Standard Test Method for Bubbling of One-Part, Elastomeric, Solvent-Release Type Sealants
Standard Test Method for Bubbling of One-Part, Elastomeric, Solvent-Release Type Sealants
SIGNIFICANCE AND USE
4.1 The type and amount of solvent used in these sealants can sometimes give rise to surface bubbling and blistering problems. The substrate used, whether porous or nonporous, will also have an effect. Although blistering is often caused by misapplication, this test method is useful in differentiating between a sealant that develops an acceptably smooth surface and one that may have blistering tendencies.
SCOPE
1.1 This test method covers determination of the degree of bubble formation or surface blistering in one-part, elastomeric solvent-release type sealants when exposed to elevated temperatures.
1.2 The subcommittee with jurisdiction is not aware of any similar ISO standard.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
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Designation: C712 − 14 (Reapproved 2021)
Standard Test Method for
Bubbling of One-Part, Elastomeric, Solvent-Release Type
Sealants
This standard is issued under the fixed designation C712; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
1.1 This test method covers determination of the degree of 4.1 The type and amount of solvent used in these sealants
bubble formation or surface blistering in one-part, elastomeric can sometimes give rise to surface bubbling and blistering
solvent-release type sealants when exposed to elevated tem- problems. The substrate used, whether porous or nonporous,
peratures. will also have an effect.Although blistering is often caused by
misapplication, this test method is useful in differentiating
1.2 The subcommittee with jurisdiction is not aware of any
between a sealant that develops an acceptably smooth surface
similar ISO standard.
and one that may have blistering tendencies.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Apparatus
responsibility of the user of this standard to establish appro-
5.1 Plates, thin aluminum, approximately 3 in. (76 mm)
priate safety, health, and environmental practices and deter-
wide by 5 in. (127 mm) long by 0.012 in. (0.30 mm) thick.
mine the applicability of regulatory limitations prior to use.
5.2 Blocks, prepare cement mortar, as described in Termi-
1.4 This international standard was developed in accor-
nology C719 to the following size: approximately 2 in. (51
dance with internationally recognized principles on standard-
mm) wide by 4 in. (102 mm) long by 1 in. (25 mm) thick.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
NOTE 1—Other substrates such as brick, cast stone, marble, stainless
mendations issued by the World Trade Organization Technical
steel, etc., may be specified either in place of the standard materials
Barriers to Trade (TBT) Committee. specified in 5.1 and 5.2 or in addition to them.
5.3 Frame, flat, rectangular, of ⁄8-in. (3.2-mm) steel or
2. Referenced Documents 3
brass, with an opening of 1 in. by 3 ⁄4 in. (25 mm by 95 mm)
and outside dimensions of approximately 2 in. by 4 ⁄4 in.
2.1 ASTM Standards:
(51 mm by 121 mm).
C717 Terminology of Building Seals and Sealants
C719 Test Method for Adhesion and Cohesion of Elasto-
5.4 Spatula, steel, with knife edge.
meric Joint Sealants Under Cyclic Movement (Hockman
5.5 Oven,forced-drafttype,havingatemperaturecontrolled
Cycle)
at 122 6 3.6 °F (50 6 2 °C).
3. Terminology
6. Test Specimen
3.1 Definitions—Refer to Terminology C717 for definitions
6.1 Take the test specimen from a previously unopened
of the following terms used in this test method: compound,
container as received from the sealant manufacturer.
elastomer, elastomeric, sealant, solvent-release sealant,
substrate, and standard conditions.
7. Procedure
7.1 Prepare three test specimens on each substrate as fol-
lows: Center the frame on the test substrate and carefully fill it
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding
with compound, avoiding air pockets. Strike off the surface of
Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on
the compound flush with the frame, to a uniform thickness of
General Test Me
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C712 − 14 C712 − 14 (Reapproved 2021)
Standard Test Method for
Bubbling of One-Part, Elastomeric, Solvent-Release Type
Sealants
This standard is issued under the fixed designation C712; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers determination of the degree of bubble formation or surface blistering in one-part, elastomeric
solvent-release type sealants when exposed to elevated temperatures.
1.2 The subcommittee with jurisdiction is not aware of any similar ISO standard.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
C717 Terminology of Building Seals and Sealants
C719 Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)
3. Terminology
3.1 Definitions—Refer to Terminology C717 for definitions of the following terms used in this test method: compound,
elastomer, elastomeric, sealant, solvent-release sealant, substrate, and standard conditions.
4. Significance and Use
4.1 The type and amount of solvent used in these sealants can sometimes give rise to surface bubbling and blistering problems.
The substrate used, whether porous or nonporous, will also have an effect. Although blistering is often caused by misapplication,
this test method is useful in differentiating between a sealant that develops an acceptably smooth surface and one that may have
blistering tendencies.
5. Apparatus
5.1 Plates, thin aluminum, approximately 3 in. (76 mm) wide by 5 in. (127 mm) long by 0.012 in. (0.30 mm) thick.
This test method is under the jurisdiction of ASTM Committee C24 on Building Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on General
Test Methods.
Current edition approved Dec. 1, 2014May 1, 2021. Published December 2014May 2021. Originally approved in 1972. Last previous edition approved in 20092014 as
C712 – 03 (2009).(2014). DOI: 10.1520/C0712-14.10.1520/C0712-14R21.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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C712 − 14 (2021)
5.2 Blocks, prepare cement mortar, as described in Terminology C719 to the following size: approximately 2 in. (51 mm) wide
by 4 in. (102 mm) long by 1 in. (25 mm) thick.
NOTE 1—Other substrates such as brick, cast stone, marble, stainless steel, etc., may be specified either in place of the standard materials specified in 5.1
and 5.2 or in addition to
...
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