1、Designation:A951/A951M16Standard Specification forSteel Wire for Masonry Joint Reinforcement1This standard is issued under the fixed designation A951/A951M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A n
2、umber 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 masonry joint reinforcementfabricated from cold-drawn steel wire.Joint reinforcementconsists of longitudinal wir
3、es welded to cross wires.1.2 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard.Within the text,theSI units are shown in brackets.The values stated in eachsystem may not be exact equivalents;therefore,each systemshall be used independently of the other.
4、Combining valuesfrom the two systems may result in non-conformance with thestandard.2.Referenced Documents2.1 ASTM Standards:2A152 Specification for Wrought Iron Rivets and RivetRounds(Withdrawn 1972)3A580/A580M Specification for Stainless Steel WireA641/A641M Specification for ZincCoated(Galvanized
5、)Carbon Steel WireA1064/A1064M Specification for Carbon-Steel Wire andWelded Wire Reinforcement,Plain and Deformed,forConcrete3.Ordering Information3.1 Orders for wire reinforcement under this Specificationshall contain the following information:3.1.1 Quantity(linear feet metres),3.1.2 Type(truss,la
6、dder),3.1.3 Width(nominal thickness of masonry wall),3.1.4 Wire size and wire specification,3.1.5 Finish(see Section 6),3.1.6 Requirements for inspection(see Section 9),3.1.7 Packaging(see Section 12),and3.1.8 ASTM designation number and year of issue.4.Materials and Manufacture4.1 Wire used in the
7、manufacture of masonry joint rein-forcement shall be round and shaped and conform to theapplicable provisions of Specifications A580/A580M,Type304,or A1064/A1064M except as modified herein.4.2 Masonry joint reinforcement shall be assembled byautomatic machines or by other suitable mechanical means t
8、hatwill assure accurate spacing and alignment of all members ofthe finished product.4.3 Longitudinal and cross wires shall be securely con-nected at every intersection by an electric-resistance weldingprocess that includes both fusion welding together with appliedpressure to join the materials.4.4 L
9、ongitudinal wires shall be deformed.One set of twodeformations shall occur around the perimeter of the wire at amaximum spacing of 0.7 times the diameter or width of thewire,but not less than eight sets per 1 in.25 mm of length.NOTE1Wire used for joint reinforcement is knurled to form defor-mations
10、and as such it does not come under the deformation requirementsin Specification A1064/A1064M.5.Mechanical Requirements5.1 Tensile PropertiesWire used in the fabrication ofmasonry joint reinforcement shall conform to the requirementsof Table 1 based on nominal area of the wire.5.2 Tension Tests:5.2.1
11、 Tension tests shall be made on individual wires cutfrom the finished product and tested either across or betweenthe welds.No less than 50%shall be across welds.5.2.2 Tension tests across a weld shall have the welded jointlocated approximately at the center of the wire being tested.5.2.3 Tensile str
12、ength shall be the average of four test valuesdetermined by dividing the maximum test load by the specifiednominal cross-sectional area of the wire.5.3 Reduction of AreaThe ruptured section of the tensilespecimen is measured to determine this property.The measure-ment shall be made only when rupture
13、 has occurred at asufficient distance from the center of the weld to permit anaccurate measurement of the fractured section.Additional1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.05
14、 on Steel Reinforcement.Current edition approved Jan.15,2016.Published January 2016.Originallyapproved in 1996.Last previous edition approved in 2014 as A951/A951M 14.DOI:10.1520/A0951_A0951M-16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at ser
15、viceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM Interna
16、tional,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 testing is permitted when a suitable ruptured section is notobtained from the initial test.The wire shall meet the minimumreduction of area requirements of Table 1.5.4 Weld Shear StrengthThe weld shear strength inpounds-force shall not be less than 25 000 multiplied by thespecified nominal area of the larger wire in square inches inNewtons shall not be less than 172 multiplied by the nominalarea in square mil