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ASTM C1241-00

(Test Method)

Standard Test Method for Volume Shrinkage of Latex Sealants During Cure

Standard Test Method for Volume Shrinkage of Latex Sealants During Cure

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 problems, 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.

General Information

Status
Historical
Publication Date
09-Jan-2000
ICS
83.040.10 - Latex and raw rubber
Technical Committee
C24 - Building Seals and Sealants
Drafting Committee
C24.20 - General Test Methods
Current Stage
Ref Project

Relations

Replaced By
ASTM C1241-00(2005) - Standard Test Method for Volume Shrinkage of Latex Sealants During Cure
Effective Date
01-Sep-2005
Referred By
ASTM C1193-16(2023) - Standard Guide for Use of Joint Sealants
Effective Date
10-Jan-2000
Referred By
ASTM E2174-20a - Standard Practice for On-Site Inspection of Installed Firestop Systems
Effective Date
10-Jan-2000
Referred By
ASTM C834-17(2023) - Standard Specification for Latex Sealants
Effective Date
10-Jan-2000
Referred By
ASTM C1021-08(2023) - Standard Practice for Laboratories Engaged in Testing of Building Sealants
Effective Date
10-Jan-2000

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ASTM C1241-00 - Standard Test Method for Volume Shrinkage of Latex Sealants During CureASTM C1241-00 - Standard Test Method for Volume Shrinkage of Latex Sealants During Cure
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ASTM C1241-00 - Standard Test Method for Volume Shrinkage of Latex Sealants During Cure
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C1241–00
Standard Test Method for
Volume Shrinkage of Latex Sealants During Cure
This standard is issued under the fixed designation C 1241; 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 the sealant is determined by the weight-per-gallon cup proce-
dure described in Test Method D 1475.
1.1 This test method covers a laboratory procedure for
determining volume shrinkage, which occurs during cure, of a
5. Significance and Use
latex sealant.
5.1 Shrinkage of a sealant, after application in a building
1.2 The values stated in SI units are to be regarded as the
joint,iscausedbylossofvolatilecomponentsfromthesealant.
standard. The values given in parentheses are provided for
This loss results in a decrease in volume and, hence, a change
information only.
in the sealant’s shape. This change in shape, in some applica-
1.3 This standard does not purport to address all of the
tions, should be taken into consideration for acceptable joint
safety concerns, if any, associated with its use. It is the
appearance and geometry.
responsibility of the user of this standard to establish appro-
5.2 The shrinkage value obtained by this test method helps
priate safety and health practices and determine the applica-
predict the appearance and geometry of the cured sealant in a
bility of regulatory limitations prior to use.
building joint and is helpful in determining the amount and
NOTE 1—A related ISO standard is ISO 10563. The user should
type of tooling to be done during installation of the sealant.
compare to determine how it differs from this test method.
5.3 Latex sealants cure primarily through water evapora-
tion. They may also contain small amounts of other volatile
2. Referenced Documents
components. However, in this test method all volatiles are
2.1 ASTM Standards:
treated as water. This assumption still provides a meaningful
C 717 Terminology of Building Seals and Sealants
shrinkagevaluesincethesmallquantitiesofothervolatilesand
D 1475 Test Method for Density of Paint, Varnish, Lacquer,
their differences in density from that of water do not signifi-
and Related Products
cantly affect the usefulness of the result obtained.
2.2 ISO Standards:
ISO 10563 Building Construction–Sealants–Determination
6. Apparatus
of Change in Mass and Volume
6.1 Polyethylene Film—Three sheets, each about 51 by 51
mm (2 by 2 in.) by 0.127 mm (5 mil) thick.
3. Terminology
6.2 Weight-per-Gallon Cup, 80 to 90 mL capacity.
3.1 Definitions—Refer toTerminology C 717 for definitions
6.3 Constant Temperature Bath or Room, held at 23 6
of the following terms used in this test method: cure, joint,
2.0°C (73 6 3.6°F).
latex sealant, sealant, shrinkage (volume), and tooling.
6.4 Forceps.
6.5 Distilled Water.
4. Summary of Test Method
4.1 The sealant is extruded onto polyethylene release film
7. Procedure
and weighed.After curing for 28 days, its volume shrinkage is
7.1 Standard conditions of temperature and relative humid-
calculated using the sealant’s density, the percent weight lost
ity for the test shall be 23 6 2°C (73 6 3.6°F) and 50 65%,
duringthe28-daycure,andthedensityofwater.Thedensityof
respectively.
7.2 Condition the sealant to be tested in a closed container
at standard conditions for at least 24 h.
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding
Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on 7.3 Condition approximately 2 L of distilled water at
General Sealant Standards.
standard conditions for at least 24 h.
Current edition approved Jan. 10, 2000. Published March 2000. Originally
7.4 Determine the density (D ) in grams per millilitre of
s
published as C 1241 – 93. Last previous edition C 1241 – 93.
fresh sealant by Test Method D 1475. Record the average
Annual Book of ASTM Standards, Vol 04.07.
Annual Book of ASTM Standards, Vol 06.01.
density (D ) of three determinations.
s
Available from American National Standards Institute, 11 W. 42nd St., 13th
Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
--
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Standard Test Method for Volume Shrinkage of Latex Sealants During Cure

SIGNIFICANCE AND USE
5.1 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.  
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SIGNIFICANCE AND USE
5.1 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.  
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SCOPE
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