ASTM C734-93

Standard Test Method for Low-Temperature Flexibility of Latex Sealants After Artificial Weathering

SCOPE
1.1 This test method covers a laboratory procedure for the determination of low-temperature flexibility of latex sealants after 500 h artificial weathering.
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-2001
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: C24 - Building Seals and Sealants
• Drafting Committee: C24.20 - General Test Methods

Relations

• Replaced By: ASTM C734-01 - Standard Test Method for Low-Temperature Flexibility of Latex Sealants After Artificial Weathering
• Effective Date: 10-Jun-2001
• Referred By: ASTM C1021-08(2023) - Standard Practice for Laboratories Engaged in Testing of Building Sealants
• Effective Date: 10-Jun-2001
• Referred By: ASTM C1193-16(2023) - Standard Guide for Use of Joint Sealants
• Effective Date: 10-Jun-2001
• Referred By: ASTM C834-17(2023) - Standard Specification for Latex Sealants
• Effective Date: 10-Jun-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 734 – 93
Standard Test Method for
Low-Temperature Flexibility of Latex Sealants After Artificial
Weathering
This standard is issued under the fixed designation C 734; 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 5. Significance and Use
1.1 This test method covers a laboratory procedure for the 5.1 This test evaluates the flexibility of artificially weath-
determination of low-temperature flexibility of latex sealants ered latex sealants in a low-temperature environment.
after 500 h artificial weathering.
6. Apparatus
1.2 The values stated in metric (SI) units are to be regarded
6.1 T3 Temper Alclad Aluminum Panels, three, each 76 by
as the standard. The values given in parentheses are for
153-mm (3 by 6-in.) of 16 to 24 gage (1.29 to 0.511 mm),
information only.
1.3 This standard does not purport to address all of the conforming with CSA Specification HA-4 CC42.
6.2 Accelerated Weathering Unit—One of the units either of
safety problems, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- the Type D through F as described in Practice G 23 or Type A
through BH as described in Practice G 26, plus a 102-18
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. cycling cam and black panel accessories.
6.3 Cold Box or Freezer.
2. Referenced Documents
6.4 Mandrel, Wood or Metal, 25 mm (1 in.) in diameter.
2.1 ASTM Standards: 6.5 Template, consisting of a 3.2-mm ( ⁄8-in.) thick brass
C 717 Terminology Building Seals and Sealants plate with a rectangular opening 38 by 127 mm (1 ⁄2 by 5 in.).
G 23 Practice for Operating Light-Exposure Apparatus 6.6 Spatula, metal.
(Carbon-Arc Type) With and Without Water for Exposure
7. Sampling
of Nonmetallic Materials
7.1 Take the sealant to be tested directly from the container
G 26 Practice for Operating Light-Exposure Apparatus
(Xenon-Arc Type) With and Without Water for Exposure as commercially supplied by the manufacturer.
of Nonmetallic Materials
8. Test Specimens
2.2 Other Standards:
8.1 Prepare three test specimens as follows:
CSA Specification HA-4 CC42
8.1.1 Center the template on an aluminum panel, fill it to
3. Terminology
excess with the sealant, and strike the excess off flush with the
3.1 Definitions—Refer to Terminology C 717 for definitions surface of the template with the metal spatula.
8.1.2 Cut around the perimeter of the sealant, next to the
of the following terms used in this test method: adhesive
failure, latex sealant, sealant, substrate. template, with the spatula, and carefully remove template.
9. Conditioning
4. Summary of Test Method
4.1 A slab of the sealant is exposed, after drying, for 500 h 9.1 Condition the three specimens for 2 days at 23 6 1°C
(73.4 6 2°F).
in an artificial weathering unit, after which it is conditioned and
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