1、Designation: A184/A184M 17Standard Specification forWelded Deformed Steel Bar Mats for ConcreteReinforcement1This standard is issued under the fixed designation A184/A184M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year o
2、f 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.This standard has been approved for use by agencies of the U.S. 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 A184) or SI units (asSpecification A184M).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 syst
5、em must be used inde-pendently of the other. Combining values from the two systemsmay result in nonconformance with this specification.1.4 This specification does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this specificat
6、ion to establishappropriate safety, health and environmental practices anddetermine the applicability of regulatory limitations prior touse.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Princ
7、iples for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete ReinforcementA7
8、00 Guide for Packaging, Marking, and Loading Methodsfor Steel Products for ShipmentA706/A706M Specification for Deformed and Plain Low-Alloy Steel 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 Marketin
9、g for Shipments (Civil Agencies)33. Ordering Information3.1 Orders for welded steel bar mats for concrete reinforce-ment under this specification shall contain the followinginformation:3.1.1 Quantity of mats,3.1.2 Bar designation number (size), length, and spacing ofbars in each direction,3.1.3 Grad
10、e required (Grade 40 or 60) 280 or 420,3.1.4 Type of steel (see Section 4.1), and3.1.5 ASTM designation A184/A184M and year of issue.NOTE 1A typical ordering description is as follows: 1000 bar mats toASTM A184 ; fabricated from Grade 40 bars to ASTM A615 ; 6 by 6in.; No. 4 by 120 in. longitudinal t
11、ip to tip, outer bars spaced 54 in.; No.3 by 60 in. transverse, outer bars spaced 114 in.1000 bar mats to ASTM A184M ; fabricated from Grade 280 bars toASTM A615M ; 150 by 150 mm; No. 10 by 3000 mm longitudinal tipto tip, outer bars spaced 1350 mm; No. 10 by 1500 mm transverse, outerbars spaced 2850
12、 mm.3.2 The purchaser shall have the option to specify additionalrequirements, including but not limited to, the following:3.2.1 Requirements for inspection (10.1),3.2.2 Packaging and special package marking requirements(Section 12), and3.2.3 Other special requirements, if any.4. Materials and Manuf
13、acture4.1 Deformed steel bars of Grades 40 280 used in themanufacture of welded mats shall conform to Specification1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.05 on Steel Reinforce
14、ment.Current edition approved Sept. 1, 2017. Published September 2017. Originallyapproved in 1936. Last previous edition approved in 2011 as A184/A184M 06(2011). DOI: 10.1520/A0184_A0184M-17.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serv
15、iceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,Philadelphia, PA 19111-5094, http:/quicksearch.dla.mil.*A Summary of Changes section appears at the
16、end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO 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 the
17、Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1A615 A615M. Deformed steel bars of Grade 60 420 used inthe manufacture of welded mats shall conform to SpecificationA615 A615M or A706 A706M.5. Fabri
18、cation5.1 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 inter-sections and at not less than a
19、lternate 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 manner thatthe strength and ductility r
20、equirements of the material specifi-cations in Section 4 are met when a specimen is tested acrossa point of weld.NOTE 2Welding of the mat intersections has generally been per-formed without problems, but care should be taken when weldingreinforcing bars with carbon equivalent levels above 0.55 %, in
21、 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 apparent loosening whenapplied to one intersection of the connected bars.6.2 Nu
22、mber 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 thereof.6.3 Test Methods:6.3.1 Tension test specimens for determining conform
23、ancewith 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 the nominal area calculatedusing the nominal diameter specified.6.3.2 Tests
24、 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 Tolerances7.1 Size and Spacing DimensionsThe sizes, spacings,dimensions, and ar
25、rangement 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 design,and the space between individual bars shall not vary more than14 in.
26、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 shall be free of injurious defects inmaterial or workmanship.8.2 Rust, su
27、rface 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 specimen are notless than the requirements of this specification.9. Rejection a
28、nd 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 specimen fails to meet the provisions of6.1, two additional samples shall be s
29、elected 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 and the average of all tests (including theoriginal test) shall meet the re
30、quirements specified in 5.1.1.3.10. Inspection and Test Reports10.1 Inspection of the welded steel bar mats shall be agreedupon between the purchaser and the manufacturer as part of thepurchase order or contract.10.2 Test Reports on BarsThe manufacturer shall supplytest reports showing that the bars
31、 used in the fabrication of themats have satisfied the tension and bend test requirements ofthe specified type and grade in accordance with Section 4. Thereports shall show the manufacturers test identificationnumbers, including the identity of the bars .10.3 A material test report, certificate of i
32、nspection, 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 shall meet the requirements of the i
33、nvoked ASTMstandard(s) and conform to any existing EDI agreement be-tween the purchaser and the manufacturer. Notwithstanding theabsence of a signature, the organization submitting the EDItransmission is responsible for the content of the report.NOTE 3The industry definition as invoked here is: EDI
34、is thecomputer-to-computer exchange of business information in a standardformat such as ANSI ASC X12.11. Rehearing11.1 Samples tested in accordance with this specificationthat represent rejected material shall be preserved for 2 weeksfrom the date rejection is reported to the manufacturer. In caseof
35、 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 loading for shipment shall bein accordance with Practices A700.A184/A184M 17212.2 When specified in the contr
36、act 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 accordance with MIL-STD-129 for military agencies and with Fed Std No. 123 for civilagencies.12.3 Each bundle of mats
37、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 CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A184/A
38、184M 06 (2011) that may impact the use of this standard. (Approved Sept. 1, 2017.)(1) Revised Sections 3 and 10.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advis
39、ed that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.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 r
40、eapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If
41、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 shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individu
42、al 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 173
