1、Designation: A 184/A 184M 06Standard Specification forWelded Deformed Steel Bar Mats for ConcreteReinforcement1This standard is issued under the fixed designation A 184/A 184M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the ye
2、ar of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification covers mat
3、erial in mat (or sheet) formfabricated from deformed steel bars to be used for thereinforcement of concrete. Mats consist of two layers of barsthat are assembled at right angles to each other. Mats areassembled by welding at the intersections.1.2 This specification is applicable for orders in either
4、inch-pound units (as Specification A 184) or SI units (asSpecification A 184M).1.3 The values stated in either inch-pound units or SI unitsare to be regarded as standard. Within the text, the SI units areshown in brackets. The values stated in each system are notexact equivalents; therefore, each sy
5、stem must be used inde-pendently of the other. Combining values from the two systemsmay result in nonconformance with this specification.2. Referenced Documents2.1 ASTM Standards:2A 615/A 615M Specification for Deformed and PlainCarbon-Steel Bars for Concrete ReinforcementA 700 Practices for Packagi
6、ng, Marking, and LoadingMethods for Steel Products for ShipmentA 706/A 706M Specification for Low-Alloy Steel De-formed and Plain Bars for Concrete Reinforcement2.2 U.S. Military Standard:MIL-STD-129 Marking for Shipment and Storage32.3 U.S. Federal Standard:Fed Std No. 123 Marketing for Shipments (
7、CivilAgencies)33. Ordering Information3.1 It shall be the responsibility of the purchaser to specifyall requirements that are necessary for material ordered to thisspecification. Such requirements shall include, but are notlimited to, the following:3.1.1 Quantity,3.1.2 Size and spacing of members in
8、 each direction,3.1.3 Grade required (Grade 40 or 60) 280 or 420,3.1.4 Type of steel as appropriate (see Section 4),3.1.5 ASTM designation A 184/A 184M and year of issue.NOTE 1A typical ordering description is as follows: 1000 bar mats toASTM A 184 ; fabricated from Grade 40 bars to ASTM A 615 ; 6 b
9、y6 in.; No. 4 by 120 in. longitudinal tip to tip, outer bars spaced 54 in.; No.3 by 60 in. transverse, outer bars spaced 114 in.1000 bar mats to ASTM A 184M ; fabricated from Grade 280 bars toASTM A 615M ; 150 by 150 mm; No. 10 by 3000 mm longitudinal tipto tip, outer bars spaced 1350 mm; No. 10 by
10、1500 mm transverse, outerbars spaced 2850 mm.4. Material and Manufacture4.1 Deformed steel bars of Grades 40 280 used in themanufacture of welded mats shall conform to SpecificationA 615 A 615M. Deformed steel bars of Grade 60 420 usedin the manufacture of welded mats shall conform to Specifi-cation
11、 A 615 A 615M or A 706 A 706M.5. Fabrication5.1 Fabricated mats shall be composed of two layers of barssubstantially parallel and perpendicular to each other.5.1.1 Mats shall be assembled by means of welding toprovide attachment at intersections.5.1.1.1 Welds shall provide attachment at all exterior
12、 inter-sections and at not less than alternate interior intersections.5.1.1.2 The separation of 5 % or less of all welded intersec-tions of any mat shall not be cause for rejection provided thatno more than half of the welds on any one bar are separated.5.1.1.3 Welding shall be performed in such a m
13、anner thatthe strength and ductility requirements of the material specifi-cations in Section 4 are met when a specimen is tested acrossa point of weld.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel, and Related Alloys and is the direct responsibility of
14、SubcommitteeA01.05 on Steel Reinforcement.Current edition approved March 1, 2006. Published March 2006. Originallyapproved in 1936. Last previous edition approved in 2005 as A 184/A 184M 05.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at servi
15、ceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS. Or visit: http:/assist.daps.dla.mil/onl
16、ine.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.NOTE 2Welding of the mat intersections has generally been per-formed without problems, but care should be taken whe
17、n weldingreinforcing bars without carbon equivalent levels above 0.55%, in order toprevent cracking in the weld area.6. Mechanical Properties6.1 Mats shall be capable of withstanding a static load of150 lbf 670 N exerted perpendicular to the plane of the mattending to separate the bars with no appar
18、ent loosening whenapplied to one intersection of the connected bars.6.2 Number of Tests:6.2.1 One sample consisting of not less than two connec-tions on the same transverse member shall be tested forconformance with the provisions of 5.1.1.3 and 6.1 from each75 000 ft27000 m2 of mats or fraction the
19、reof.6.3 Test Methods:6.3.1 Tension test specimens for determining conformancewith 5.1.1.3 shall have a welded joint located approximately atthe center of the bar being tested, and the cross bar shall extendapproximately 1 in. 25 mm beyond each side. All unit stressdeterminations shall be based on t
20、he nominal area calculatedusing the nominal diameter specified.6.3.2 Tests of connections against separation shall be per-formed on an assembled mat by placing blocks under adeformed bar in the upper layer and applying the prescribedload upon the bar in the lower layer.7. Size, Dimensions, and Toler
21、ances7.1 Size and Spacing DimensionsThe sizes, spacings,dimensions, and arrangement of the bar mats shall conform tothe design specified by the purchaser. Bars shall extend beyondexterior intersections a distance of not less than 1 in. 25 mm.The spacing of bars shall average that specified in the de
22、sign,and the space between individual bars shall not vary more than14 in. 6 mm from that specified.7.2 Width and Length TolerancesThe overall length orwidth of the mats shall not be more than 1 in. 25 mm greateror less than the specified dimension.8. Finish and Surface Condition8.1 The finished mats
23、 shall be free of injurious defects inmaterial or workmanship.8.2 Rust, surface seams, surface irregularities, or mill scaleshall not be cause for rejection provided the weight, dimen-sions including height of deformation, cross-sectional area, andtensile properties of a hand wire-brushed test speci
24、men are notless than the requirements of this specification.9. Rejection and Retests9.1 Fabricated mats that do not meet the requirements ofthis specification shall be rejected and reported to the manu-facturer within 5 working days from the receipt of samples bythe purchaser.9.2 In case a test spec
25、imen fails to meet the provisions of6.1, two additional samples shall be selected and tested. Allretest specimens shall meet the requirements of this specifica-tion.9.3 In case a test specimen fails to meet the provisions of5.1.1.3, all of the remaining bars on the transverse membershall be tested a
26、nd the average of all tests (including theoriginal test) shall meet the requirements specified in 5.1.1.3.10. Inspection and Test Reports10.1 InspectionThe inspector representing the purchasershall have free entry, at all times while work on the contract ofthe purchaser is being performed, to all pa
27、rts of the manufac-turers plant that concern the fabrication of the mats ordered.The manufacturer shall afford the inspector all reasonablefacilities to satisfy the inspector that the mats are beingfurnished in accordance with this specification. All tests andinspection shall be made at the place of
28、 fabrication prior toshipment, unless otherwise specified, and shall be so conductedas not to interfere unnecessarily with fabricating operations.Inspection as to general workmanship shall be visual.10.2 Test Reports on Bar MaterialThe manufacturer shallsupply test reports showing that the material
29、used in thefabrication of the mats as delivered has fulfilled the tension andbend test requirements of the specified type and grade de-scribed in Section 4. The reports shall show the manufacturerstest identification numbers, including the identity of the mate-rial.10.3 A material test report, certi
30、ficate of inspection, orsimilar document printed from or used in electronic form froman electronic data interchange (EDI) transmission shall beregarded as having the same validity as a counterpart printed inthe certifiers facility. The content of the EDI transmitteddocument must meet the requirement
31、s of the invoked ASTMstandard(s) and conform to any existing EDI agreement be-tween the purchaser and the supplier. Notwithstanding theabsence of a signature, the organization submitting the EDItransmission is reponsible for the content of the report.NOTE 3The industry definition as invoked here is:
32、 EDI is thecomputer-to-computer exchange of business information in a standardformat such as ANSI ASC X12.10.4 For Government Procurement Only Except as oth-erwise specified in the contract, the contractor shall be respon-sible for the performance of all inspection and test require-ments specified h
33、erein. Except as otherwise specified in thecontract, the contractor shall be permitted to use ones own orany other suitable facilities for the performance of the inspec-tion and test requirements specified herein, unless disapprovedby the purchaser at the time of purchase. The purchaser shallhave th
34、e right to perform any of the inspections and tests at thesame frequency as set forth in this specification where suchinspections are deemed necessary to assure that materialconforms to prescribed requirements.11. Rehearing11.1 Samples tested in accordance with this specificationthat represent rejec
35、ted material shall be preserved for 2 weeksfrom the date rejection is reported to the manufacturer. In caseof dissatisfaction with the results of the tests, the manufacturershall have the right to make claim for a hearing within thattime.12. Packaging and Package Marking12.1 Packaging, marking, and
36、loading for shipment shall bein accordance with Practices A 700.A 184/A 184M 06212.2 When specified in the contract or order, and for directprocurement by or direct shipment to the U.S. government,marking for shipment, in addition to requirements specified inthe contract or order, shall be in accord
37、ance with MIL-STD-129 for military agencies and with Fed. Std. No. 123 for civilagencies.12.3 Each bundle of mats shall be marked with a suitabletag showing the name of the manufacturer and other markingto identify it with the order.13. Keywords13.1 concrete reinforcement; mats; steel barsSUMMARY OF
38、 CHANGESCommittee A01 has identifed the location of the following changes to this standard since the last issue(A 184/A 184M 05) that may impact the use of this standard. (Approved March 1, 2006).(1) Revised sections 2.1, 2.2, and Section 12.Committee A01 has identifed the location of the following
39、changes to this standard since the last issue (A 184/A 184M 01)that may impact the use of this standard. (Approved March 1, 2005.)(1) Sections 1.1, 2.1, 3.1, 3.1.3, 4.1, 10.4 (formerly section10.3), 11.1, and Note 1 were revised.(2) Section 10.3 and Note 3 were added.ASTM International takes no posi
40、tion respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibili
41、ty.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to AST
42、M International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address
43、shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).A 184/A 184M 063
