ASTM C932-2019 pdf free download

ASTM C932-2019 pdf free download.Standard Specification for Surface-Applied Bonding Compounds for Exterior Plastering
1. Scope
1.1 This specification covers minimum requirements for exterior surface-applied bonding compounds for improving the adhesion ofcementitious material to concrete or other masonry surfaces or any structurally sound surfaces. 1.2 This specification also covers test methods for determin- ing performance requirements and physical properties. 1.3 The values stated in inch-pound units are to be regarded as the standard. The SI metric values given in parentheses are approximate and are provided for information purposes only. 1.4 The following safety hazards caveat pertains only to the test methods described in Sections 9, 10, 11, and 12 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 appro- priate safety and health practices and determine the applica- bility ofregulatory limitations prior to use. 1.5 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
4. Physical Properties
4.1 Surface Applied Bonding Compound—A freeze-thaw stable composition, suitable for brush, roller, or spray applica- tion. It shall be tinted to show by visual inspection where it has been applied. The tint shall not bleed through the material being bonded. 4.2 Consistency—The bonding compound shall be free of foreign matter as determined by visual inspection and shall be of such uniform consistency that when applied in accordance with the producer’s directions by brush, roller, or spray to concrete, masonry, or other structurally sound surface, the bonding compound shall flow on evenly and dry uniformly. 4.3 Film Characteristics—The film-forming property shall be determined by visual inspection to determine the presence of a continuous film not broken by fisheyes, cracking, pull- back, or any other discontinuity in the film surface. It shall not be noticeably affected by alkaline surfaces or weak acids. 4.4 Re-Emulsification—Product conforming with this speci- fication shall not re-emulsify.
5. Performance Requirements
5.1 Bonding Capability—The bonding compound shall be capable of bonding cementitious materials when applied in accordance with the producer’s directions and tested as speci- fied in Section 12.5.2 Degradation—Bonding compound which separates shall be able to be re-mixed to a uniform consistency when tested as specified in Section 10. 5.3 High Temperature Test—The bond strength shall be not less than 150 psi (1034 kPa) when tested as specified in Section 9. 5.4 Freeze-Thaw Stability—The bond strength shall be not less than 150 psi (1034 kPa) and 100 psi (690 kPa) when tested under the dry and wet conditions, respectively, as specified in Section 11. 5.5 Tensile Bond Strength—Bond strength of a fresh sample or a 6-month-old sample of bonding compound shall have an average tensile strength ofnot less than 150 psi (1034 kPa) and 100 psi (690 kPa) when tested under the dry and wet conditions, respectively, as specified in Section 12.
6. Sampling
6.1 Take a sample of not less than 2.2 lb (1000 g) from each shipment or consignment for analysis and tests. Except in special cases, take the sample from not less than three separate containers, chosen at random. In addition, take samples from containers that appear to be nonrepresentative, and test sepa- rately. Place the samples immediately in airtight glass contain- ers and transport to the testing laboratory in these containers. Take precautions to reduce evaporation or drying to a mini- mum. Thoroughly mix the bonding compound in the container if there is a tendency for liquid phase separation.