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ASTM C731-00

(Test Method)

Standard Test Method for Extrudability, After Package Aging, of Latex Sealants

Standard Test Method for Extrudability, After Package Aging, of Latex Sealants

SCOPE
1.1 This test method covers a laboratory procedure for the determination of extrudability of latex sealants after freeze-thaw and heat cycling.
1.2 The values stated in metric (SI) units are to be regarded as the standard. The values given in parentheses are 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-Jun-2000
ICS
91.100.50 - Binders. Sealing materials
Technical Committee
C24 - Building Seals and Sealants
Drafting Committee
C24.20 - General Test Methods
Current Stage
Ref Project

Relations

Replaced By
ASTM C731-00(2006) - Standard Test Method for Extrudability, After Package Aging, of Latex Sealants
Effective Date
01-May-2006
Referred By
ASTM C1021-08(2023) - Standard Practice for Laboratories Engaged in Testing of Building Sealants
Effective Date
10-Jun-2000
Referred By
ASTM C1193-16(2023) - Standard Guide for Use of Joint Sealants
Effective Date
10-Jun-2000

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ASTM C731-00 - Standard Test Method for Extrudability, After Package Aging, of Latex SealantsASTM C731-00 - Standard Test Method for Extrudability, After Package Aging, of Latex Sealants
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ASTM C731-00 - Standard Test Method for Extrudability, After Package Aging, of Latex Sealants
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C731–00
Standard Test Method for
Extrudability, After Package Aging, of Latex Sealants
This standard is issued under the fixed designation C731; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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. Apparatus
1.1 This test method covers a laboratory procedure for the 6.1 Caulking Gun, air-powdered.
determination of extrudability of latex sealants after freeze- 6.2 Polyethylene Cartridge, 6 fluid oz. and plunger.
thaw and heat cycling. 6.3 Polyethylene Cartridge Nozzle,64mm(2 ⁄2 in.) in
1.2 The values stated in metric (SI) units are to be regarded length with 3-mm ( ⁄8-in.) orifice.
as the standard. The values given in parentheses are for 6.4 Air Compressor, capable of producing 50 psi (0.34
information only. MPa).
1.3 This standard does not purport to address all of the 6.5 Freezer, capable of maintaining−17 6 1°C (0 6 2°F).
safety problems, if any, associated with its use. It is the 6.6 Circulating Air Oven, capable of maintaining 50 6 1°C
responsibility of the user of this standard to establish appro- (122 6 2°F).
priate safety and health practices and determine the applica- 6.7 Stop Watch, standard laboratory.
bility of regulatory limitations prior to use. 6.8 Analytical Balance, accurate to 1 g.
6.9 Jar, approximately 0.5 L (1-pt).
NOTE 1—Currently there is no ISO standard similar to this test method.
6.10 Spatula.
2. Referenced Documents
7. Sampling
2.1 ASTM Standards:
7.1 Afterconditioningasspecifiedin8.1,takethesealantto
C717 Terminology of Building Seals and Sealants
betesteddirectlyfromacontainerascommerciallysuppliedby
the manufacturer.
3. Terminology
3.1 Definition—Refer to Terminology C717 for defini-
8. Conditioning
tions of the following terms used in this test method: latex
8.1 Subject the sealant in its original container to 5 freeze-
sealant, sealant.
thaw cycles, each cycle consisting of 16 h at−176 1°C (0 6
2°F) and8hat23 6 1°C (73.46 2°F), followed by 7 days at
4. Summary of Test Method
50 6 1°C (122 6 2°F).
4.1 After being subjected to 5 freeze-thaw cycles followed
8.2 Condition the sealant which is still in its original
by 7 days of heat aging, the sealant is extruded under pressure
container, for a minimum of 5 days at 23 6 1°C (73.4 6 2°F)
from an air-powered caulking gun, and the extrudability is
and 50 6 5% relative humidity.
measured in grams per second.
8.3 Condition the polyethylene cartridge for a minimum of
5. Significance and Use 16 h at the same conditions as specified in 8.2.
5.1 Extrudability measurements of latex sealants serve to
9. Procedure
indicate only their ease of application; they do not predict the
9.1 After conditioning, transfer the sealant from its con-
performance capability of the compound after installation.
tainerintothepolyethylenecartridgeeitherbygunningorwith
5.2 This test method also measures freeze-thaw and heat
the spatula. Avoid trapping air in the sealant during transfer.
stability of such sealants.
9.2 Place the filled cartridge in the air-powered caulking
gun and attach
...

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1.1 This test method covers a laboratory screening procedure for determining the compatibility of liquid-applied structural sealant glazing sealants when in contact with accessories such as dry glazing gaskets, spacers, shims, and setting blocks after exposure to heat and ultraviolet light.  
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