ASTM_C_90_-_16a.pdf

Designation:C9016aStandard Specification forLoadbearing Concrete Masonry Units1This standard is issued under the fixed designation C90;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()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.Scope*1.1 This specification covers hollow and solid(see 5.3 and5.4)concrete masonry units made from hydraulic cement,water,and mineral aggregates with or without the inclusion ofother materials.There are three classes of concrete masonryunits:Normal Weight,Medium Weight,and Lightweight.These units are suitable for both loadbearing and nonloadbear-ing applications.1.2 Concrete masonry units covered by this specification aremade from lightweight or normal weight aggregates,or both.NOTE1The requirements of this specification have been researched,evaluated,and established for over a century,resulting in the physicalproperties and attributes defined here.These requirements are uniquelyand solely applicable to concrete masonry units manufactured on equip-ment using low or zero slump concrete and the constituent materialsdefined herein.Many performance attributes of concrete masonry units areindirectly accounted for,or inherently reflected within,the requirementsof this specification without direct measurement,assessment,or evalua-tion.Applying the requirements of this specification to products that maybe similar in appearance,use,or nature to those covered by thisspecification may not address all pertinent physical properties necessary toensure performance or serviceability of the resulting construction inreal-world applications under typical exposure environments.Productsmanufactured using alternative materials,manufacturing methods,orcuring processes not covered by this specification should not be evaluatedsolely using the requirements in this specification;however,developers ofnew products can consider the property requirements of this specificationas a beginning benchmark for unit performance.It is reasonable to testnew products for system performance as well as unit performance.1.3 The text of this specification references notes andfootnotes which provide explanatory material.These notes andfootnotes(excluding those in tables and figures)shall not beconsidered as requirements of the standard.1.4 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.NOTE2When particular features are desired such as surface texturesfor appearance or bond,finish,color,or particular properties such asdensity classification,higher compressive strength,fire resistance,thermalperformance or acoustical performance,these features should be specifiedseparately by the purchaser.Suppliers should be consulted as to theavailability of units having the desired features.2.Referenced Documents2.1 ASTM Standards:2C33/C33M Specification for Concrete AggregatesC140/C140M Test Methods for Sampling and Testing Con-crete Masonry Units and Related UnitsC150/C150M Specification for Portland CementC331/C331M Specification for Lightweight Aggregates forConcrete Masonry UnitsC426 Test Method for Linear Drying Shrinkage of ConcreteMasonry UnitsC595/C595M Specification for Blended Hydraulic CementsC618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC979/C979M Specification for Pigments for Integrally Col-ored ConcreteC989/C989M Specification for Slag Cement for Use inConcrete and MortarsC1157/C1157M Performance Specification for HydraulicCementC1232 Terminology of MasonryC1240 Specification for Silica Fume Used in CementitiousMixturesC1314 Test Method for Compressive Strength of MasonryPrismsE519/E519M Test Method for Diagonal Tension(Shear)inMasonry AssemblagesE72 Test Methods of Conducting Strength Tests of Panelsfor Building Construction3.Terminology3.1 Terminology defined in Terminology C1232 shall applyfor this specification.1This specification is under the jurisdiction of ASTM Committee C15 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.03 on Concrete Masonry Units and Related Units.Current edition approved Dec.15,2016.Published January 2017.Originallyapproved in 1931.Last previous edition approved in 2016 as C90 15.DOI:10.1520/C0090-16A.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-