ASTM_C_1692_-_11.pdf

Designation:C169211Standard Practice forConstruction and Testing of Autoclaved Aerated Concrete(AAC)Masonry1This standard is issued under the fixed designation C1692;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.INTRODUCTIONMasonry units of autoclaved aerated concrete(AAC)can be produced with dimensional tolerancesas small as 0.06 in.(1.5 mm).As a consequence,AAC masonry units can be laid with mortar jointsapproximately 0.38 in.(10 mm)thick,and also with thinner joints.The exterior face of the resultingAAC masonry wall is then protected from the elements using an exterior wythe of masonry,a claddingsystem,or a breathable coating resistant to penetration by liquid water.The interior face can beplastered,furred,or painted.1.Scope*1.1 This practice applies to construction and testing ofmasonry made of AAC units.It includes or referencesterminology,material specifications,and methods of test.Itreferences specifications and test methods.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety 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:2C270 Specification for Mortar for Unit MasonryC476 Specification for Grout for MasonryC1072 Test Methods for Measurement of Masonry FlexuralBond StrengthC1232 Terminology of MasonryC1660 Specification for Thin-bed Mortar for AutoclavedAerated Concrete(AAC)MasonryC1691 Specification for Unreinforced Autoclaved AeratedConcrete(AAC)Masonry UnitsC1693 Specification for Autoclaved Aerated Concrete(AAC)C1717 Test Methods for Conducting Strength Tests of Ma-sonry Wall PanelsE96/E96M Test Methods for Water Vapor Transmission ofMaterialsE514 Test Method for Water Penetration and LeakageThrough MasonryE518 Test Methods for Flexural Bond Strength of MasonryE519 Test Method for Diagonal Tension(Shear)in MasonryAssemblages2.2 Other Standards:TMS 40208/ACI 53009/ASCE 508 Building CodeRequirements for Masonry Structures3TMS 602-08/ACI 530.1-08/ASCE 6-08 Specification forMasonry Structures33.Terminology3.1 DefinitionsTerms defined in Terminology C1232 shallapply in this practice.4.Significance and Use4.1 This practice applies to the materials and methods usedin the construction of AAC masonry.It directly references theAAC materials standards under the jurisdiction of ASTMCommittee C27 and the workmanship requirements of TMS602-08/ACI 530.1-08/ASCE 6-08 and supplements those1This practice is under the jurisdiction of ASTM Committee C15 on Manufac-tured Masonry Units and is the direct responsibility of Subcommittee C15.10 onAutoclaved Aerated Concrete Masonry Units.Current edition approved Dec.1,2011.Published December 2011.Originallyapproved in 2009.Last previous edition approved in 2010 as C1692 10.DOI:10.1520/C1692-11.2For 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.3Available from The Masonry Society,3970 Broadway,Suite 201-D Boulder,CO 803041135,http:/www.masonrysociety.org.*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 workmanship requirements with additional requirements par-ticular to AAC masonry.5.Materials5.1 AAC masonry units shall conform to SpecificationC1691.5.2 Mortar for thick-bed AAC masonry shall meet theperformance standards prescribed by the AAC manufacturer.5.3 Mortar for thin-bed AAC masonry shall comply withSpecification C1660.NOTE1In general,AAC manufacturers performance standards formortar for AAC masonry address minimum dry compressive strength,minimum wet compressive strength,minimum bond strength,minimumopen time,and minimum working time.They also require that the mortarprovide sufficient bond to the AAC masonry unit so that flexural tensilestrength is controlled by the flexural tensile strength of the units ratherthan by the bond between units and mortar.5.4 Grout shall conform to Specification C476.6.Methods of Test6.1 Compressive Strength Test for AAC MasonryReportthe compressive strength of the AAC masonry as the strengthof the AAC material determined in accordance with Specifi-cation C1693.NOTE2Bond-strength requirements for AAC masonry mortar(Note1)result in AAC masonry assemblages that