ASTM C1815-17(2021)
(Practice)Standard Practice for Periodically Measuring and Monitoring Sealant Dimensions to Stability Following a Period of Compression or Tension
Standard Practice for Periodically Measuring and Monitoring Sealant Dimensions to Stability Following a Period of Compression or Tension
SIGNIFICANCE AND USE
5.1 Many sealants have been observed to dimensionally change following a period of compression or tension, such as occurs during exposure in accordance with Practice C1589. It has been shown that for some sealants, increasing exposure to weathering increases the time required for dimensional stability and decreases the magnitude of dimensional change. Dimensional stability and knowledge of the stable sealant dimensions are critical to the accurate measurement of the sealant’s modulus by a test such as Test Method C1735.
5.2 This practice will find application in improving the accuracy of the modulus determined by a standard such as Test Method C1735 by using the accurate dimensions determined by this practice after stability is attained.
SCOPE
1.1 This practice covers a procedure for measuring and monitoring the physical dimensions of an elastomeric joint sealant in a test specimen configuration described in Test Method C719 following a period of compression or tension. These sealant materials are typically highly filled elastic materials. The dimensional change of these sealant materials is determined by measuring the dimensions at specific intervals over a period of time.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered 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
Relations
Standards Content (Sample)
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.
Designation: C1815 − 17 (Reapproved 2021)
Standard Practice for
Periodically Measuring and Monitoring Sealant Dimensions
to Stability Following a Period of Compression or Tension
This standard is issued under the fixed designation C1815; 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 3. Terminology
1.1 This practice covers a procedure for measuring and 3.1 Definitions:
monitoring the physical dimensions of an elastomeric joint 3.1.1 For definitions of terms used in this practice, refer to
sealant in a test specimen configuration described in Test Terminologies E631 and C717.
Method C719 following a period of compression or tension.
4. Summary of Practice
These sealant materials are typically highly filled elastic
materials. The dimensional change of these sealant materials is
4.1 This practice consists of monitoring the dimensional
determined by measuring the dimensions at specific intervals
change of a sealant for a period of time required to establish
over a period of time.
dimensional stability.
1.2 The values stated in SI units are to be regarded as
4.2 The motivation for this practice is to monitor the
standard. The values given in parentheses after SI units are
dimensions of a sealant at any time, but especially after a
provided for information only and are not considered standard.
period of extended tension or compression to establish the
stable dimensions of that sealant. The latter is used in appli-
1.3 This standard does not purport to address all of the
cation of a standard, such as Test Method C1735, by using the
safety concerns, if any, associated with its use. It is the
accurate dimensions determined by this practice after dimen-
responsibility of the user of this standard to establish appro-
sional stability is attained.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
4.3 This practice will enable determination of the stable
1.4 This international standard was developed in accor-
dimensions of a sealant. It will also allow the reporting of the
dance with internationally recognized principles on standard-
time scale over which the sealant dimensions are changing.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
5. Significance and Use
mendations issued by the World Trade Organization Technical
5.1 Many sealants have been observed to dimensionally
Barriers to Trade (TBT) Committee.
change following a period of compression or tension, such as
occurs during exposure in accordance with Practice C1589.It
2. Referenced Documents
has been shown that for some sealants, increasing exposure to
2.1 ASTM Standards:
weathering increases the time required for dimensional stabil-
C717 Terminology of Building Seals and Sealants
ity and decreases the magnitude of dimensional change.
C719 Test Method for Adhesion and Cohesion of Elasto-
Dimensional stability and knowledge of the stable sealant
meric Joint Sealants Under Cyclic Movement (Hockman
dimensions are critical to the accurate measurement of the
Cycle)
sealant’s modulus by a test such as Test Method C1735.
C1589 Practice for Outdoor Weathering of Construction
5.2 This practice will find application in improving the
Seals and Sealants
accuracy of the modulus determined by a standard such as Test
C1735 Test Method for Measuring the Time Dependent
Method C1735 by using the accurate dimensions determined
Modulus of Sealants Using Stress Relaxation
by this practice after stability is attained.
E631 Terminology of Building Constructions
6. Apparatus
6.1 Dimensional Measuring Tool—A micrometer, such as
This practice is under the jurisdiction of ASTM Committee C24 on Building
Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on
digital calipers, capable of measuring the dimens
...
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