ASTM C920-18
Standard Specification for Elastomeric Joint Sealants

Standard No.

ASTM C920-18

Release Date

2018

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM C920-18

Scope

7.1 This specification covers several classifications of sealants as described in Section 4 for various applications. It should be recognized by the purchaser or design professional that not all sealants meeting this specification are suitable for all applications and all substrates. It is essential, therefore, that the applicable type, grade, class, and use be specified so that the proper classification of sealant is provided for the intended use. Test methods relate to special standard specimen substrates of mortar, glass, and aluminum. If tests are required using substrates in addition to or other than the standard, they should be so specified for testing.

1.1 This ASTM specification covers the properties of a cured single- or multicomponent cold-applied elastomeric joint sealant for sealing, caulking, or glazing operations on buildings, plazas, and decks for vehicular or pedestrian use, and types of construction other than highway and airfield pavements and bridges.

1.2 A sealant meeting the requirements of this specification shall be designated by the manufacturer to be one or more of the types, classes, grades, and uses defined in Section 7.

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

1.4 This standard is similar, but not identical, to ISO 11600 and ISO 11618.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM C920-18 Referenced Document

• ASTM C1183 Standard Test Method for Extrusion Rate of Elastomeric Sealants
• ASTM C1193 Standard Guide for Use of Joint Sealants
• ASTM C1246 Standard Test Method for Effects of Heat Aging on Weight Loss, Cracking, and Chalking of Elastomeric Sealants After Cure
• ASTM C1247 Standard Test Method for Durability of Sealants Exposed to Continuous Immersion in Liquids
• ASTM C1442 Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus
• ASTM C510 Standard Test Method for Staining and Color Change of Single- or Multicomponent Joint Sealants
• ASTM C639 Standard Test Method for Rheological (Flow) Properties of Elastomeric Sealants
• ASTM C661 Standard Test Method for Indentation Hardness of Elastomeric-Type Sealants by Means of a Durometer
• ASTM C679 Standard Test Method for Tack-Free Time of Elastomeric Sealants
• ASTM C717 Standard Terminology of Building Seals and Sealants
• ASTM C719 Standard Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)
• ASTM C793 Standard Test Method for Effects of Accelerated Weathering on Elastomeric Joint Sealants
• ASTM C794 Standard Test Method for Adhesion-in-Peel of Elastomeric Joint Sealants

ASTM C920-18 history

• 2018 ASTM C920-18 Standard Specification for Elastomeric Joint Sealants
• 2014 ASTM C920-14a Standard Specification for Elastomeric Joint Sealants
• 2014 ASTM C920-14 Standard Specification for Elastomeric Joint Sealants
• 2011 ASTM C920-11 Standard Specification for Elastomeric Joint Sealants
• 2010 ASTM C920-10 Standard Specification for Elastomeric Joint Sealants
• 2008 ASTM C920-08 Standard Specification for Elastomeric Joint Sealants
• 2005 ASTM C920-05 Standard Specification for Elastomeric Joint Sealants
• 2002 ASTM C920-02 Standard Specification for Elastomeric Joint Sealants
• 2001 ASTM C920-01 Standard Specification for Elastomeric Joint Sealants
• 1998 ASTM C920-98e1 Standard Specification for Elastomeric Joint Sealants
• 1987 ASTM C920-87 Stnadard Specification for Elastomeric Joint Sealants