1、Designation:A884/A884M06 Designation: A884/A884M 12Standard Specification forEpoxy-Coated Steel Wire and Welded Wire Reinforcement1This standard is issued under the fixed designation A884/A884M; the number immediately following the designation indicates the yearof original adoption or, in the case o
2、f 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specifi
3、cation covers plain and deformed steel wire and plain and deformed steel welded wire reinforcement withprotective epoxy coating. A Class A minimum coating thickness is required for wire and welded wire reinforcement intended foruse in concrete and masonry. A Class B minimum coating thickness is requ
4、ired for wire and welded wire reinforcement intendedfor use in mechanically stabilized earth applications. A Type 1 coating is a fusion-bonded epoxy coating that has beendesignedformulated to be sufficiently flexible to allow fabricationbending of the coated wire or welded wire reinforcement.AType2
5、coating is a fusion-bonded epoxy coating that has not been designed to be sufficiently flexible to allow fabricationbending of thecoated wire or welded wire reinforcement.NOTE 1The coating applicator is identified throughout this specification as the manufacturer.1.2Other organic coatings may be use
6、d provided they meet the requirements of this specification.1.3This specification is applicable for orders in either SI units (Specification A884M) or in inch-pound units SpecificationA884.1.4The values stated in either SI or inch-pound units are to be regarded as standard. Within the text, the inch
7、-pound units areshown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independentlyof the other except as specifically noted in1.2 This specification is applicable for orders in either inch-pound units (as Specification A884) or SI units (
8、as SpecificationA884M).1.3 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units areshown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be usedindependently of the other e
9、xcept as specifically noted in Table 1. Combining values from the two systems may result innon-conformance with this specification.1.51.4 This standardspecification does not purport to address all of the safety concerns, if any, associated with its use. It is theresponsibility of the user of this st
10、andardspecification to establish appropriate safety and health practices and determine theapplicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A82/A82M Specification for Steel Wire, Plain, for Concrete ReinforcementA185/A185M Specification for Steel Welded
11、Wire Reinforcement, Plain, for ConcreteA496/A496M Specification for Steel Wire, Deformed, for Concrete ReinforcementA497/A497M Specification for Steel Welded Wire Reinforcement, Deformed, for ConcreteA775/A775M Specification for Epoxy-Coated Steel Reinforcing BarsA934/A934M Specification for Epoxy-C
12、oated Prefabricated Steel Reinforcing Bars2.2 NACE International Standard:NACE RP-287-87Field Measurement of Surface Profile of Abrasive Blast-Cleaned Steel Surface Using a Replica Tape2.3 Specification for Epoxy-Coated Prefabricated Steel Reinforcing Bars1This specification is under the jurisdictio
13、n ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.05on Steel Reinforcement.Current edition approved Dec. 1, 2006. Published December 2006. Originally approved in 1988. Last previous edition approved in 2004 as A884/A884M04. DOI:10.1
14、520/A0884_A0884M-06.Current edition approved May 15, 2012. Published June 2012. Originally approved in 1988. Last previous edition approved in 2006 as A884/A884M 06. DOI:10.1520/A0884_A0884M-12.2For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at ser
15、viceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.1This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version
16、. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section
17、 appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.A1064/A1064M Specification for Steel Wire and Welded Wire Reinforcement, Plain and Deformed, for ConcreteD4417 Test Methods for Field Measurement of
18、Surface Profile of Blast Cleaned Steel2.2 Society for Protective Coatings Specifications:3SSPC-PA2 Measurement of Dry Coating Thickness with Magnetic GaugesSSPC-SP 10 Near-White Blast CleaningSSPC-VIS 1 Pictorial Surface Preparation Standards for Painting Steel Surfaces2.4 Unified Facilities Guide S
19、pecification:NFGS03200AConcrete Reinforcement2.52.3 American Concrete Institute Specification:ACI301Specifications for Structural Concrete4ACI 301 Specifications for Structural Concrete2.4 Concrete Reinforcing Steel Institute:5CRSI “Voluntary Certification Program for Fusion Bonded Epoxy Coating App
20、licator Plants”3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1conversion coating, na preparation of the blast-cleaned steel surface prior to coating application that is designed topretreat the metal to promote coating adhesion, reduce metal/coating reactions, improve corrosion
21、 resistance, and increase blisterresistance.3.1.2Definitions of Terms Specific to This Specification:3.1.1 disbonding, nloss of adhesion between the fusion-bonded epoxy coating and the steel reinforcement.3.1.33.1.2 fusion-bonded epoxy coating, na product containing pigments, thermosetting epoxy res
22、ins, crosslinking agents, andother additives. It is applied in the form of a powder on a clean, heated, metallic substrate and fuses to form a continuous barriercoating.3.1.43.1.3 holiday, na discontinuity in a coating that is not discernible to a person with normal or corrected vision.3.1.53.1.4 pa
23、tching material, na liquid, two-part epoxy coating used to repair damaged or uncoated areas. a liquid, two-partepoxy coating compatible with the Type I or Type II coatings used to repair damaged or uncoated areas.3Available from National Association of Corrosion Engineers (NACE), 1440 South Creek Dr
24、., Houston, TX 77084-4906, http:/www.nace.org.3Available from Society for Protective Coatings (SSPC), 40 24th St., 6th Floor, Pittsburgh, PA 15222-4656, http:/www.sspc.org.4Available from Society for Protective Coatings (SSPC), 40 24th St., 6th Floor, Pittsburgh, PA 15222-4656, http:/www.sspc.org.4A
25、vailable from American Concrete Institute (ACI), P.O. Box 9094, Farmington Hills, MI 48333-9094, http:/www.aci-int.org.5Available from the Naval Facilities Engineering Service Center (NFESC), 560 Center Drive, Port Hueneme, CA 93043.5Available from Concrete Reinforcing Steel Institute (CRSI), 933 N.
26、 Plum Grove Rd. Schaumburg, IL 60173-4758, http:/www.crsi.org.TABLE 1 Best Test RequirementsWire Size No.MW or MD,mmWire SizeNo.WorD,in.MandWirel D Siamzeter,No.mm in.MW or MDMandrel DiameterTime toComplete, s (maximum)9to39maximum1.4to6 1.4to6 two times the diameterof the wirebeing tested151.4to6 9
27、 to 39 Two times the diameterof the wirebeing tested(2d)A1539 6 four times thediameter of thewire beingtested456 39 Four times the four times thediameter of thewire beingtested(4d)A45Ad = nominal diameter of wire.A884/A884M 1223.1.5 pretreatment, na preparation of the blast-cleaned steel surface pri
28、or to coating application that is designed to pretreatthe metal to promote coating adhesion, reduce metal/coating reactions, improve corrosion resistance, and increase blisterresistance.3.1.6 wetting agent, na material that lowers the surface tension of water, allowing it to penetrate more effective
29、ly into smalldiscontinuities in the coating, giving a more accurate indication of the holiday count.4. Ordering Information4.1 It shall be the responsibility of the purchaser to specify all requirements that are necessary for the coated wire and weldedwire reinforcement under this specification. Suc
30、h requirements to be considered include, but are not limited to, the following:4.1.1 Wire or welded wire reinforcement specification and year of issue,4.1.2 Wire size,4.1.3 Wire spacing and sizes, if welded wire reinforcement,4.1.4 Length and width of sheets or rolls,4.1.5 Quantity,4.1.6Class and ty
31、pe of coating,4.1.6 Class and type of coating (1.1),4.1.7 Requirements for the epoxy powder coating and provision of test data (5.2 and 5.3),4.1.8 Requirements for patching material (5.4),4.1.9Quantity of patching material,4.1.10Specific requirements for test frequency (4.1.9 Quantity of patching ma
32、terial (5.4.2),4.1.10 Requirements for steel pretreatment (6.3),4.1.11 Specific requirements for test frequency (9.1),4.1.112 Additional specimens to be provided to the purchaser for testing from the coated wire or welded wire reinforcementbeing furnished (12.1),4.1.123 Whether a report on tests per
33、formed on the coated wire or welded wire reinforcement being furnished is required (15.2),and4.1.134 Manufacturer qualification and certification requirements (if any).NOTE2It is recommended that the manufacturing procedures and processes be audited by an independent certification program for epoxy
34、coatingapplicators plants, such as that provided by the Navy Facility Guide Specification or equivalent.NOTE3A typical ordering description is as follows: 150 sheets 150 3 300MD453 MD 26 2440 mm (+0, +0) 3 6.1m63 12 W7.0 3 W4.096 in. (+0, +0) 3 20 ft epoxy coated to Specification A884/A 884M_ Class
35、A Type 2. Include written certifications for powder coating and coatedWWR, and one patch kit. 2It is recommended that the coating application procedures and processes be audited by an independent certification programfor epoxy coating applicators plants, such as that provided by Concrete Reinforcing
36、 Steel Institute (CRSI), or equivalent.5. Materials5.1 Plain or deformed steel wire or welded wire reinforcement to be coated shall meet the requirements the applicableSpecifications A82/A82M, A185/A185M, A496/A496M, or , A497/A497M, or A1064/A1064M as specified by the purchaser andshall be free of
37、surface contaminants such as oil, grease, or paint when received at the manufacturers plant and prior to cleaningand coating.5.2 Type 1 coatings shall meet the requirements of and shall be qualified in accordance with Annex A1 of SpecificationA775/A775M. Type 2 coatings shall meet the requirements o
38、f and shall be qualified in accordance withAnnexA1 of SpecificationA934/A934M. Upon request, the purchaser shall be provided with the test report for review. . Upon request, the purchaser shallbe provided with data demonstrating that these products meet the specifications.5.2.1 A written certificati
39、on shall be furnished to the purchaser that properly identifies the designation of each lot of powdercoating used in the order, material quantity represented, date of manufacture, name and address of the powder coatingmanufacturer, and a statement that the supplied powder coating is the same composi
40、tion as that qualified in accordance with 5.2.5.2.2 The powder coating shall be stored in a temperature-controlled environment followingin accordance with the writtenrecommendations of the powder coating manufacturer until ready for use.At this point, if the storage temperature is below the plantamb
41、ient temperature, the powder coating shall be given sufficient time to reach approximate plant ambient temperature. Thepowder coating shall be used within the powder coating manufacturers written recommended shelf life.5.3 If specified in the order, a representative 0.2 kg 8 oz8 oz 0.2 kg sample of
42、the powder coating shall be supplied to thepurchaser from each batch. The sample shall be packaged in an airtight container and identified by batch number.5.4 If specified in the order, patching material, compatible with the coating and inert in concrete, and recommended by thecoating manufacturer s
43、hall be supplied to the purchaser. Patching material for repairing damaged coating shall be compatible withthe coating, inert in concrete, and formulated for use at coating applicator plants, fabrication shops and job-sites. Patching materialfor Type I coatings shall meet requirements of Specificati
44、on A775/A775M. Patching material for Type II coatings shall meetrequirements of Specification A934/A934M.A884/A884M 1235.4.1 The patching material manufacturer shall specify the steel surface preparation, the coating thickness and the proceduresfor application of the patching material.5.4.2 If speci
45、fied in the order, patching material shall be supplied to the purchaser.6. Surface Preparation6.1 The surface of the steel wire or welded wire reinforcement to be coated shall be cleaned by abrasive blast cleaning tonear-white metal in accordance with SSPCSP10SSPC-SP 10. The final surface condition
46、shall be defined according to SSPC-VIS1. Average blast profile maximum roughness depth readings of 40 to 100 m 1.5 to 4.0 mils as determined by replica tapemeasurements using NACE RP-287-87 shall be considered suitable as an anchor pattern. . Average blast profile maximumroughness depth readings of
47、1.5 to 4.0 mils 40 to 100 m as determined by the use of a profilometer type surface measurementinstrument that measures the peak count as well as the maximum profile depth, according to Test Methods D4417, Method B, oras determined by replica tape measurements using Test Methods D4417, Method C, sha
48、ll be considered a suitable method tomeasure the anchor pattern.NOTE4Abrasive blast cleaning of wire and welded wire reinforcement with a high degree ( 90%) of grit in the cleaning media provides the mostsuitable anchor profile for coating adhesion.After grit has been recycled, a small portion will
49、take on the appearance of shot. 3Abrasive blast cleaningof wire and welded wire reinforcement with a high degree ( 90 %) of grit in the cleaning media provides the most suitable anchor profile for coatingadhesion. After grit has been recycled, a small portion of it will take on the appearance of shot.6.2 Multidirectional, high-pressure, dry air knives shall be used after blast cleaning to remove dust, grit, and other foreign matterfrom the steel surface. The air knives shall not deposit oil on the steel reinforcement.NOTE5The use o
