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ASTM C732-06(2012)

(Test Method)

Standard Test Method for Aging Effects of Artificial Weathering on Latex Sealants

Standard Test Method for Aging Effects of Artificial Weathering on Latex Sealants

SIGNIFICANCE AND USE
Accelerated weathering exposure serves to indicate long-term exterior durability of the sealant. In this test method, durability is tested when the sealant is used with wood or aluminum.
SCOPE
1.1 This test method covers a laboratory procedure for the determination of aging effects of artificial weathering on latex sealants.
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 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—Currently there is no ISO standard similar to this test method.

General Information

Status
Historical
Publication Date
31-May-2012
ICS
91.100.50 - Binders. Sealing materials
Technical Committee
C24 - Building Seals and Sealants
Drafting Committee
C24.40 - Weathering
Current Stage
Ref Project

Relations

Replaces
ASTM C732-06 - Standard Test Method for Aging Effects of Artificial Weathering on Latex Sealants
Effective Date
01-Jun-2012
Referred By
ASTM E2813-18 - Standard Practice for Building Enclosure Commissioning
Effective Date
01-Jun-2012
Referred By
ASTM C834-17(2023) - Standard Specification for Latex Sealants
Effective Date
01-Jun-2012
Referred By
ASTM C1193-16(2023) - Standard Guide for Use of Joint Sealants
Effective Date
01-Jun-2012
Referred By
ASTM C1021-08(2023) - Standard Practice for Laboratories Engaged in Testing of Building Sealants
Effective Date
01-Jun-2012

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ASTM C732-06(2012) - Standard Test Method for Aging Effects of Artificial Weathering on Latex SealantsASTM C732-06(2012) - Standard Test Method for Aging Effects of Artificial Weathering on Latex Sealants
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ASTM C732-06(2012) - Standard Test Method for Aging Effects of Artificial Weathering on 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C732 −06 (Reapproved 2012)
Standard Test Method for
Aging Effects of Artificial Weathering on Latex Sealants
This standard is issued under the fixed designation C732; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 5. Significance and Use
1.1 This test method covers a laboratory procedure for the 5.1 Accelerated weathering exposure serves to indicate
determination of aging effects of artificial weathering on latex long-term exterior durability of the sealant. In this test method,
sealants. durability is tested when the sealant is used with wood or
aluminum.
1.2 The values stated in metric (SI) units are to be regarded
as the standard. The values given in parentheses are for
6. Apparatus
information only.
6.1 Accelerated Weathering Device—One of the units as
1.3 This standard does not purport to address all of the
described in Practice C1442. Because of differences in spectral
safety concerns, if any, associated with its use. It is the
power distributions of the exposure sources and exposure
responsibility of the user of this standard to establish appro-
parameters used in the different types of devices described in
priate safety and health practices and determine the applica-
Practice C1442, test results may differ with the type of
bility of regulatory limitations prior to use.
accelerated weathering device. Choice of type of device shall
NOTE 1—Currently there is no ISO standard similar to this test method.
be by mutual agreement among the interested parties.
2. Referenced Documents 6.2 Channel Panel attached to a Sample Holderasshownin
Fig. 1.
2.1 ASTM Standards:
C717 Terminology of Building Seals and Sealants 6.3 Knife, for tooling.
C1442 Practice for Conducting Tests on Sealants Using
7. Sampling
Artificial Weathering Apparatus
7.1 Use the sealant to be tested directly from the container
3. Terminology
as commercially supplied by the manufacturer.
3.1 Definitions:
3.1.1 Definitions of the following terms are found in Ter-
8. Test Specimens
minology C717: adhesive failure (loss of adhesion); latex
8.1 Prepare two 25 by 70 by 175-mm (1 by 2 ⁄4 by 7-in.)
sealant; sealant.
wood-and-aluminum channel panels as shown in Fig. 1, using
the following materials:
4. Summary of Test Method
8.1.1 Exterior Fir Plywood,withawater-resistantthermoset
4.1 The sealant is placed in a specially constructed wood-
glue such as urea or melamine-formaldehyde type.
and-aluminum fixture (referred to as a “channel panel”) and
8.1.2 Ponderosa Pine Sapwood, white kiln dried and free of
exposedforintervalsof500htospecifiedalternatewetanddry
knots or imperfections.
cycles in an accelerated weathering unit, then periodically
8.1.3 Aluminum Alloy 6063-T5 or 6061-T6, clear, anodized
examined for evidences of deterioration.
a minimum of 30 min over a scale-free finish.
8.1.4 Polyethylene Spacer of low-density film approxi-
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding mately 5 mils (0.13 mm) thick.
Seals and Sealantsand is the direct responsibility of Subcommittee C24.40 on
8.1.5 Screws and Nails, zinc-coated or nonrusting type.
Weathering.
Current edition approved June 1, 2012. Published June 2012. Originally 8.2 Using a gun or knife, completely fill the two 7 by
approved in 1972. Last previous edition approved in 2006 as C732 – 06. DOI: 1 1
13-mm ( ⁄4 by ⁄2-in.) channels in both panels with sealant,
10.1520/C0732-06R12.
striking off the excess from the top and ends so that it is flush
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
with the panel surfaces.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume i
...

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