ASTM C1241-00(2009)

Standard Test Method for Volume Shrinkage of Latex Sealants During Cure

SIGNIFICANCE AND USE
Shrinkage of a sealant, after application in a building joint, is caused by loss of volatile components from the sealant. This loss results in a decrease in volume and, hence, a change in the sealant's shape. This change in shape, in some applications, should be taken into consideration for acceptable joint appearance and geometry.
The shrinkage value obtained by this test method helps predict the appearance and geometry of the cured sealant in a building joint and is helpful in determining the amount and type of tooling to be done during installation of the sealant.
Latex sealants cure primarily through water evaporation. They may also contain small amounts of other volatile components. However, in this test method all volatiles are treated as water. This assumption still provides a meaningful shrinkage value since the small quantities of other volatiles and their differences in density from that of water do not significantly affect the usefulness of the result obtained.
SCOPE
1.1 This test method covers a laboratory procedure for determining volume shrinkage, which occurs during cure, of a latex sealant.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information only.
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.
Note 1—A related ISO standard is ISO 10563. The user should compare to determine how it differs from this test method.

General Information

• Status: Historical
• Publication Date: 31-May-2009
• ICS: 83.040.10 - Latex and raw rubber
• Technical Committee: C24 - Building Seals and Sealants
• Drafting Committee: C24.20 - General Test Methods

Relations

• Replaces: ASTM C1241-00(2005) - Standard Test Method for Volume Shrinkage of Latex Sealants During Cure
• Effective Date: 01-Jun-2009
• Referred By: ASTM C1193-16(2023) - Standard Guide for Use of Joint Sealants
• Effective Date: 01-Jun-2009
• Referred By: ASTM C834-17(2023) - Standard Specification for Latex Sealants
• Effective Date: 01-Jun-2009
• Referred By: ASTM C1021-08(2023) - Standard Practice for Laboratories Engaged in Testing of Building Sealants
• Effective Date: 01-Jun-2009
• Referred By: ASTM E2174-20a - Standard Practice for On-Site Inspection of Installed Firestop Systems
• Effective Date: 01-Jun-2009

Standards Content (Sample)

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: C1241 − 00 (Reapproved 2009)
StandardTest Method for
Volume Shrinkage of Latex Sealants During Cure
This standard is issued under the fixed designation C1241; 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 calculated using the sealant’s density, the percent weight lost
duringthe28-daycure,andthedensityofwater.Thedensityof
1.1 This test method covers a laboratory procedure for
the sealant is determined by the weight-per-gallon cup proce-
determining volume shrinkage, which occurs during cure, of a
dure described in Test Method D1475.
latex sealant.
1.2 The values stated in SI units are to be regarded as the
5. Significance and Use
standard. The values given in parentheses are provided for
5.1 Shrinkage of a sealant, after application in a building
information only.
joint,iscausedbylossofvolatilecomponentsfromthesealant.
1.3 This standard does not purport to address all of the
This loss results in a decrease in volume and, hence, a change
safety concerns, if any, associated with its use. It is the
in the sealant’s shape. This change in shape, in some
responsibility of the user of this standard to establish appro-
applications, should be taken into consideration for acceptable
priate safety and health practices and determine the applica-
joint appearance and geometry.
bility of regulatory limitations prior to use.
5.2 The shrinkage value obtained by this test method helps
NOTE 1—A related ISO standard is ISO 10563. The user should
predict the appearance and geometry of the cured sealant in a
compare to determine how it differs from this test method.
building joint and is helpful in determining the amount and
type of tooling to be done during installation of the sealant.
2. Referenced Documents
5.3 Latex sealants cure primarily through water evapora-
2.1 ASTM Standards:
tion. They may also contain small amounts of other volatile
C717 Terminology of Building Seals and Sealants
components. However, in this test method all volatiles are
D1475 Test Method For Density of Liquid Coatings, Inks,
treated as water. This assumption still provides a meaningful
and Related Products
shrinkagevaluesincethesmallquantitiesofothervolatilesand
2.2 ISO Standards:
their differences in density from that of water do not signifi-
ISO 10563 Building Construction–Sealants–Determination
cantly affect the usefulness of the result obtained.
of Change in Mass and Volume
6. Apparatus
3. Terminology
6.1 Polyethylene Film—Three sheets, each about 51 by 51
3.1 Definitions—Refer to Terminology C717 for definitions
mm (2 by 2 in.) by 0.127 mm (5 mil) thick.
of the following terms used in this test method: cure, joint,
latex sealant, sealant, shrinkage (volume), and tooling.
6.2 Weight-per-Gallon Cup, 80 to 90 mL capacity.
6.3 Constant Temperature Bath or Room, held at 23 6
4. Summary of Test Method
2.0°C (73 6 3.6°F).
4.1 The sealant is extruded onto polyethylene release film
6.4 Forceps.
and weighed.After curing for 28 days, its volume shrinkage is
6.5 Distilled Water.
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding
7. Procedure
Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on
General Test Methods.
7.1 Standard conditions of temperature and relative humid-
Current edition approved June 1, 2009. Published June 2009. Originally
ity for the test shall be 23 6 2°C (73 6 3.6°F) and 50 65%,
approved in 1993. Last previous edition approved in 2005 as C1241 – 00(2005).
DOI: 10.1520/C1241-00R09. respectively.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7.2 Condition the sealant to be tested in a closed container
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on at standard conditions for at least 24 h.
the ASTM website.
7.3 Condition approximately 2 L of distilled water at
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036. standard conditions for at least 24 h.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C1241 − 00 (Reapproved 2009)
7.4 Determine the density (D ) in grams per millilitre of W 2 W
f c
s
% Wl 5 3100 (1)
fresh sealant by Test Me
...