ASTM_C_936_-_C_936M_-_16.pdf

Designation:C936/C936M16Standard Specification forSolid Concrete Interlocking Paving Units1This standard is issued under the fixed designation C936/C936M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers the requirements for interlock-ing concrete pavers manufactured for the construction of pavedsurfaces.1.2 When particular features are desired,such as weightclassification,higher compressive strength,surface textures,finish,color,or other special features,such properties shouldbe specified by the purchaser.Local sellers,however,should beconsulted as to availability of units having the desired features.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.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 CementC207 Specification for Hydrated Lime for Masonry Pur-posesC260/C260M Specification for Air-Entraining Admixturesfor ConcreteC331/C331M Specification for Lightweight Aggregates forConcrete Masonry UnitsC418 Test Method for Abrasion Resistance of Concrete bySandblastingC494/C494M Specification for Chemical Admixtures forConcreteC595/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 HydraulicCementC1240 Specification for Silica Fume Used in CementitiousMixturesC1645/C1645M Test Method for Freeze-thaw and De-icingSalt Durability of Solid Concrete Interlocking PavingUnits3.Terminology3.1 Definitions:3.1.1 architectural finishessurface modified by mechani-cal means such as blasting,hammering,polishing,tumbling,washing,or other methods.4.Materials4.1 Cementitious Materials shall conform to the followingapplicable ASTM specifications:4.1.1 Portland CementsSpecification C150/C150M.4.1.2 Blended Hydraulic CementsSpecification C595/C595M.4.1.3 Hydraulic CementSpecification C1157/C1157M.4.1.4 Hydrated Lime,Type SSpecification C207.4.1.5 Fly AshSpecification C618.4.1.6 Ground SlagSpecification C989/C989M.4.1.7 Silica FumeSpecification C1240.4.2 Aggregates shall conform to the following ASTMspecifications,except that grading requirements shall notnecessarily apply:4.2.1 Normal WeightSpecification C33/C33M.4.2.2 LightweightSpecification C331/C331M.4.3 Chemical Admixtures shall conform to the followingapplicable ASTM specifications:4.3.1 Air-entraining AdmixturesSpecification C260/C260M.4.3.2 Water-reducing,Retarding,andAcceleratingAdmixturesSpecification C494/C494M.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 June 1,2016.Published July 2016.Originally approvedin 1982.Last previous edition approved in 2015 as C936/C936M 15.DOI:10.1520/C0936_C0936M-16.2For 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 4.3.3 PigmentsforIntegrallyColoredConcreteSpecification C979/C979M.4.4 Other ConstituentsIntegral water repellents,and othermaterials for which no ASTM standards exist,shall be previ-ously established as suitable for use in concrete or shall beshown by test or experience not to be detrimental to theconcrete.5.Physical Requirements5.1 Units shall have an exposed face area 101 in.20.065m2,and their overall length divided by thickness shall be 4.The minimum specified thickness shall be 2.36 in.60 mm.See Fig.1.5.2 Concrete units covered by this specification may bemade from lightweight or normal weight aggregates or mixedlightweight and normal weight aggregates.5.3 Compressive StrengthAt the time of delivery to thework site,the average compressive strength of the test samplesshall be not less than 8000 psi 55 MPa with no individual unitless than 7200 psi 50 MPa as required in 6.2.5.4 AbsorptionThe average absorption of the test samplesshall not