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ASTM-C1521:2008 Edition

ASTM-C1521:2008 Edition

$40.63

C1521-08a Standard Practice for Evaluating Adhesion of Installed Weatherproofing Sealant Joints

Published By Publication Date Number of Pages
ASTM 2008 7
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1.1 This practice describes destructive and nondestructive procedures.

1.2 The destructive procedure stresses the sealant in such a way as to cause either cohesive or adhesive failure of the sealant or cohesive failure of the substrate where deficient substrate conditions exist. The objective is to characterize the adhesive/cohesive performance of the sealant on the specific substrate by applying whatever strain is necessary to effect failure of the sealant bead. It is possible that the strain applied to the sealant bead may result in the failure of a deficient substrate before effecting a failure in the sealant.

Note 1The destructive procedure requires immediate repair of the sealant bead. Appropriate materials and equipment should be available for this purpose.

Note 2Sealant formulations may fail in cohesion or adhesion when properly installed, and tested by this method. The sealant manufacturer should be consulted to determine the appropriate guidelines for using this method.

1.3 The nondestructive procedure places strain on the sealant and a stress on the adhesive bond. Though termed nondestructive, this procedure may result in an adhesive failure of a deficient sealant bead, but should not cause a cohesive failure in the sealant. The results of this procedure should be either adhesive failure or no failure.

Note 3The nondestructive procedure may require immediate repair of the sealant bead, if failure is experienced. Appropriate materials and equipment should be available for this purpose.

1.4 The non-destructive procedure can be used for continuous inspection of 100 % of the joint(s) or for any areas where deficient conditions, which are inconsistent with the practices of Guide C 1193 , are suspected.

1.5 The committee with jurisdiction over this practice is not aware of any comparable practices published by other organizations or committees.

1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.7 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.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
Significance and Use
2 Testing Equipment
Summary of Methods
Procedures
FIG. 1
3 FIG. 2
4 Reporting
Repair
FIG. 3
5 FIG. 4
6 Precision and Bias
Keywords
FIG. 4

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