ASTM_C_932_-_06_2013.pdf

Designation:C93206(Reapproved 2013)Standard Specification forSurface-Applied Bonding Compounds for ExteriorPlastering1This standard is issued under the fixed designation C932;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification covers minimum requirements forexterior surface-applied bonding compounds for improving theadhesion of cementitious material to concrete or other masonrysurfaces 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 regardedas the standard.The SI metric values given in parentheses areapproximate and are provided for information purposes only.1.4 The following safety hazards caveat pertains only to thetest methods described in Sections 9,10,11,and 12 in thisspecification:This standard does not purport to address all ofthe safety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C11 Terminology Relating to Gypsum and Related BuildingMaterials and SystemsC109/C109M Test Method for Compressive Strength ofHydraulic Cement Mortars(Using 2-in.or 50-mm CubeSpecimens)C150 Specification for Portland CementC305 Practice for Mechanical Mixing of Hydraulic CementPastes and Mortars of Plastic ConsistencyC511 Specification for Mixing Rooms,Moist Cabinets,Moist Rooms,and Water Storage Tanks Used in theTesting of Hydraulic Cements and ConcretesC778 Specification for Sand3.Terminology3.1 Definitions used in this specification shall be in accor-dance with Terminology C11.4.Physical Properties4.1 Surface Applied Bonding CompoundA freeze-thawstable composition,suitable for brush,roller,or spray applica-tion.It shall be tinted to show by visual inspection where it hasbeen applied.The tint shall not bleed through the materialbeing bonded.4.2 ConsistencyThe bonding compound shall be free offoreign matter as determined by visual inspection and shall beof such uniform consistency that when applied in accordancewith the producers directions by brush,roller,or spray toconcrete,masonry,or other structurally sound surface,thebonding compound shall flow on evenly and dry uniformly.4.3 Film CharacteristicsThe film-forming property shallbe determined by visual inspection to determine the presenceof a continuous film not broken by fisheyes,cracking,pull-back,or any other discontinuity in the film surface.It shall notbe noticeably affected by alkaline surfaces or weak acids.4.4 Re-EmulsificationProduct conforming with this speci-fication shall not re-emulsify.5.Performance Requirements5.1 Bonding CapabilityThe bonding compound shall becapable of bonding cementitious materials when applied inaccordance with the producers directions and tested as speci-fied in Section 12.5.2 DegradationBonding compound which separatesshall be able to be re-mixed to a uniform consistency whentested as specified in Section 10.5.3 High Temperature TestThe bond strength shall be notless than 150 psi(1034 kPa)when tested as specified in Section9.1This specification is under the jurisdiction of ASTM Committee C11 onGypsum and Related Building Materials and Systems and is the direct responsibilityof Subcommittee C11.02 on Specifications and Test Methods for Accessories andRelated Products.Current edition approved May 1,2013.Published August 2013.Originallyapproved in 1980.Last previous edition approved in 2006 as C932 06.DOI:10.1520/C0932-06R13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.4 Freeze-Thaw StabilityThe bond strength shall be notless than 150 psi(1034 kPa)and 100 psi(690 kPa)when testedunder the dry and wet conditions,respectively,as specified inSection 11.5.5 Tensile Bond StrengthBond strength of a fresh sampleor a 6-month-old sample of bonding compound shall have anaverage tensile strength of not less than 150 psi(1034 kPa)and100 psi(690 kPa)when tested under the dry and wetconditions,respectively,as specified in Section 12.6.Sampling6.1 Take a sample of not less than 2.2 lb(1000 g)from eachshipment or consignment for analysis and tests.Except inspecial cases,take the sam