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This specification covers the minimum requirements for bonding compounds used in adhering interior gypsum plasters to structurally sound surfaces. The bonding compound should be a tinted film-forming material suitable for application by brush, roller, and spray. It shall have a non-oxidizing, non-toxic, and non-flammable composition, and have a smooth, homogeneous, and flexible consistency with no settling of the solids. It shall also be free of foreign matter, and shall not be noticeably affected by mild acid or alkali. The apparatus needed for the preparation of the compound are moist cabinet, forced drift type oven, freezer, balance, timing device, tamper, steel straight edge, metal-bladed spatula, paint brush, briquet testing machine, briquet molds, divider, and clips. Specimens shall be sampled, tested, and conform accordingly to the following performance requirements: bonding capability; degradation; high temperature stability; freeze-thaw stability, and bond strength.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers minimum requirements for bonding compounds for adhering interior gypsum plaster to structurally sound surfaces.
1.2 This specification also covers test methods for determining performance requirements and physical properties.
1.3 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.
1.4 The following safety hazards caveat pertains only to the test methods described in this specification: 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C11 Terminology Relating to Gypsum and Related Building Materials and Systems
C28/C28M Specification for Gypsum Plasters
C472 Test Methods for Physical Testing of Gypsum, Gypsum Plasters and Gypsum Concrete
C511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes
ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)
UNSPSC Code 30111701(Gypsum plaster)
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ASTM C631-09(2020), Standard Specification for Bonding Compounds for Interior Gypsum Plastering, ASTM International, West Conshohocken, PA, 2020, www.astm.orgBack to Top