ASTM-C793 Historical Revision Information
Standard Test Method for Effects of Laboratory Accelerated Weathering on Elastomeric Joint Sealants

ASTM-C793 - 2005 EDITION - SUPERSEDED
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Standard Test Method for Effects of Laboratory Accelerated Weathering on Elastomeric Joint Sealants
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Scope

1.1 This test method covers a laboratory procedure for determining the effects of accelerated weathering on cured-in-place elastomeric joint sealants (single- and multicomponent) for use in building construction.

1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.

1.3 The committee with jurisdiction over this standard is not aware of any comparable standards published by other ASTM committees or other organizations.

1.4 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.

Significance and Use

It is known that solar radiation contributes to the degradation of sealants in exterior building joints. The use of a laboratory accelerated weathering machine with actinic radiation, moisture and heat appears to be a feasible means to give indications of early degradation by the appearance of sealant cracking. However, simulated weather factors in combination with extension may produce more severe degradation than weather factors only. Therefore, the effect of the weathering test is made more sensitive by the addition of the bending of the specimen at cold temperature.

Keywords

accelerated weathering; sealant; ultraviolet; weathering; ICS Number Code 83.060 (Rubber); 91.100.50 (Binders. Sealing materials)

To find similar documents by ASTM Volume:

04.07 (Building Seals and Sealants; Fire Standards; Dimension Stone)

To find similar documents by classification:

83.060 (Rubber Raw rubber, see 83.040.10)

91.100.50 (Binders. Sealing materials Including geomembranes, asphalts for buildings, etc.)

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Document Number

ASTM-C793-05

Revision Level

2005 EDITION

Status

Superseded

Modification Type

Revision

Publication Date

July 1, 2005

Document Type

Test Method

Page Count

4 pages

Committee Number

C24.40