1、Designation:C21617Standard Specification forFacing Brick(Solid Masonry Units Made from Clay orShale)1This standard is issued under the fixed designation C216;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A
2、 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.Scope*1.1 This specification covers brick intended for use inm
3、asonry and supplying structural or facing components,orboth,to the structure.1.2 The requirements of this specification apply at the timeof purchase.The use of results from testing of brick extractedfrom masonry structures for determining conformance ornonconformance to the requirements of this spec
4、ification isbeyond the intent of this specification.1.3 The brick are prismatic units available in a variety ofsizes,textures,colors,and shapes.This specification is notintended to provide specifications for paving brick(see Speci-fication C902).1.4 Brick are ceramic products manufactured primarilyf
5、rom clay,shale,or similar naturally occurring earthy sub-stances and subjected to a heat treatment at elevated tempera-tures(firing).Additives or recycled materials are permitted tobe included at the option of the manufacturer.The heattreatment must develop a fired bond between the particulateconsti
6、tuents to provide the strength and durability requirementsof this specification(see Terminology C1232).1.5 Brick are shaped during manufacture by molding,pressing,or extrusion,and the shaping method is a way todescribe the brick.1.5.1 This standard and its individual requirements shall notbe used to
7、 qualify or corroborate the performance of a masonryunit made from other materials,or made with other formingmethods,or other means of binding the materials.1.6 Three types of brick in each of two grades are covered.1.7 The text of this specification references notes andfootnotes that provide explan
8、atory material.These notes andfootnotes(excluding those in tables and figures)shall not beconsidered as requirements of the standard.1.8 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 i
9、nformation onlyand are not considered standard.2.Referenced Documents2.1 ASTM Standards:2C67 Test Methods for Sampling and Testing Brick andStructural Clay TileC902 Specification for Pedestrian and Light Traffic PavingBrickC1232 Terminology of MasonryC1272 Specification for Heavy Vehicular Paving Br
10、ick3.Terminology3.1 DefinitionsFor definitions relating to masonry andfacing brick,refer to Terminology C1232.4.Classification4.1 GradesGrades classify brick according to their resis-tance to damage by freezing when saturated at a moisturecontent not exceeding the 24-h cold water absorption.Twograde
11、s of facing brick are covered and the requirements aregiven in Section 7.4.1.1 Grade SW(Severe Weathering)Brick intended foruse where high resistance to damage caused by cyclic freezingis desired.4.1.2 Grade MW(Moderate Weathering)Brick intendedfor use where moderate resistance to cyclic freezing da
12、mage ispermissible.NOTE1Although grade is associated with resistance to deteriorationunder freeze/thaw exposures,freeze/thaw resistance of a clay brick unit isalso affected by the properties of the surrounding materials,the construc-tion details,and the overall environment in which the clay unit is
13、placed;each of which may influence exposure to moisture and freezing condi-tions.Brick masonry should be detailed to minimize saturation ornear-saturation of the units in freezing conditions.Measurement of1This specification is under the jurisdiction of ASTM Committee C15 onManufactured Masonry Unit
14、s and is the direct responsibility of SubcommitteeC15.02 on Brick and Structural Clay Tile.Current edition approved March 15,2017.Published March 2017.Originallyapproved in 1947.Last previous edition approved in 2016 as C216 16.DOI:10.1520/C0216-17.2For referenced ASTM standards,visit the ASTM websi
15、te,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,P
16、O Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 moisture content of brick in buildings indicates that,when the building isdesigned and constructed to reduce water penetration,t
