as澳大利亞標(biāo)準(zhǔn)as nzs 4672.12017 steel prestressing materials part 1 general requirements

1、Accessed Accessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007AS/NZS 4672.1:2007wd SteelprestressingmaterialsPart1:General requirementsTheThe Standard is downloaded from Standard SharingAS/NZS 4672.1:2007This Joint Australian/New Zealand Standard was prepared by Joint Technical Committee BD-08

2、4, Steel Reinforcing and Prestressing Materials. It was approved on behalf of the Council of Standards Australia on 14 August 2006 and on behalf of the Council of Standards New Zealand on 9 June 2006.This Standard was published on 18 January 2007.The following are represented on Committee BD-084:AUS

3、TROADSAssociation of Consulting Engineers Australia Australian Chamber of Commerce and Industry Australian Post Tensioning AssociationAustralian Steel AssociationAustralian Wire Industry AssociationBureau of Steel Manufacturers of AustraliaBusiness New ZealandCement & Concrete Association of New Zea

4、landGalvanizers Association of AustraliaInstitution of Professional Engineers New ZealandMaster Builders AustraliaNational Precast Concrete Association AustraliaSteel ReinforcementInstitute of AustraliaKeeping Standards up-to-dateAccessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007Standards a

5、re living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themsel

6、ves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchaseAccessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007Detailed information about joint Australian/New Zealand Standards can be found by visiting the Standards

7、Web Shop at standards .au or Standards New Zealand web site at standards.co.nz and looking up the relevant Standard in the on-line catalogue.Alternatively, both organizations publish an annual printed Catalogue with full details of all current Standards. For more frequent listings or notification of

8、 revisions, amendments and withdrawals, Standards Australia and Standards New Zealand offer a number of update options. For information about these services, users should contact their respective national Standards organization.We also welcome suggestions for improvement in our Standards, and especi

9、ally encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Please address your comments to the Chief Executive of either Standards Australia or Standards New Zealand at the address shown on the back cover.ThisStandard was issued in draft form for commentas DR04001.A

10、ccessedAccessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007wd SteelprestressingmaterialsPart1:General requirementsAS 1310 fist publshed 1972. Secondedtion 198.AS 1311 fist publshed 1972. Secondedtion 198.AS 1313 originateds AS A141963.Second edtion 197.AS A1441971revsed and redsignated AS 131

11、31972.Second edtion 198.AS 13101987,AS 13111987and AS 13131989revised, amalgated and redesignated(n part) S/NS 467.1:2007.COPYRIGHT Standards Australia/Standards New ZealandAll rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical

12、, including photocopying, without the written permission of the publisher.Jointly published by Standards Australia, GPO Box 476, Sydney, NSW 2001 and StandardsNew Zealand, Private Bag 2439, Wellington 6020ISBN 0 7337 79840TheThe Standard is downloaded from Standard SharingPREFACEThisStandardwasprepa

13、redbytheStandardsAustralia/StandardsNewZealand Committee BD-084, Reinforcing and Prestressing Materials, to supersede the following Standards:AS 13101987 Steel wire for tendons in prestressed concreteAS 13111987 Steel tendons for prestressed concrete7-wire stress-relieved strand for tendons in prest

14、ressed concreteAS 13131989 Steel tendons for prestressed concreteCold-worked high-tensile alloy steel bars for prestressed concreteThe objective of this Standard is to provide a single specification for material requirementsfor as-drawn wire, stress-relieved wire, quenched and tempered wire, strand,

15、 and hot-rolled steel bars, intended for use in prestressed concrete structures which have been designed in accordance with AS 3600, Concrete structures or NZS 3101.1, Concrete structures standard, Part 1: The design of concrete structures.AS/NZS 4672.2, Steel prestressing materials, Part 2: Testing

16、 requirements, provides a method to ensure compliance with this Standard.This Standard is aligned technically with both ISO 6934, Steel for the prestressing of concrete (all parts), and ISO 15630-3, Steel for the reinforcement and prestressing of concreteTest methodsPart 3: Prestressing steel. The S

17、tandard is not classed astechnically equivalent to any of these documents primarily because(a)the procedure for the isothermal relaxation test in ISO 15630-3 was not thought to be adequate (e.g., duration of test, and other testing requirements); and(b)differences in both the text and numerical valu

18、es, although minor in nature, are too numerous to meet the strict definition of technically equivalent.Reference has also been made to the European Standards prEN 10138, Parts 1 to 4,Prestressing steels, for additional material and information.The test methods described in this Standard are not gene

19、rally suitable for crimped wire.Accessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007For ease of use, the tables setting out the dimensions, masses and tensile properties havebeen divided into common sizes readily available and other sizes that may be available from suppliers on special reques

20、Accessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007The term force has been used throughout this Standard in place of the term load (which was used previously).The terms normative and informative have been used in this Standard to define the application of the appendix to which they apply. A

21、normative appendix is an integral part of a Standard, whereas an informative appendix is only for information and guidance.Statements expressed in mandatory terms in notes to tables are deemed to be requirements of this Standard.AccessedAccessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007CONT

22、ENTSPageSECTION 1 SCOPE AND GENERAL1.1SCOPE51.2REFERENCEDDOCUMENTS51.3DEFINITIONS61.4MANUFACTURINGPROCESS81.5REQUIREMENTS81.6TESTING101.7ROUNDINGOF NUMBERS121.8DELIVERYDETAILS12SECTION 2 AS-DRAWN(MILL COIL)WIRE2.1SCOPE OF SECTION142.2CONDITIONSOF MANUFACTURE142.3SURFACECONFIGURATION142.4PROPERTIESAN

23、D REQUIREMENTS142.5DESIGNATION152.6DELIVERYDETAILS16SECTION 3 STRESS-RELIEVEDWIRE3.1SCOPE OF SECTION173.2CONDITIONSOF MANUFACTURE173.3SURFACECONFIGURATION173.4PROPERTIESAND REQUIREMENTS173.5DESIGNATION193.6DELIVERYDETAILS19SECTION 4 QUENCHEDANDTEMPERED WIRE4.1SCOPE OF SECTION214.2CONDITIONSOF MANUFA

24、CTURE214.3SURFACECONFIGURATION214.4PROPERTIESAND REQUIREMENTS214.5DESIGNATION244.6DELIVERYDETAILS24SECTION 5 STRAND5.1SCOPE OF SECTION255.2CONDITIONSOF MANUFACTURE255.3STRAND CONSTRUCTION265.4PROPERTIESAND REQUIREMENTS275.5TENSILETESTING OF STRAND275.6DESIGNATION295.7DELIVERYDETAILS29SECTION 6 HOT-R

25、OLLEDSTEEL BARS WITH OR WITHOUTSUBSEQUENT PROCESSING6.1SCOPE OF SECTION316.2CONDITIONSOF MANUFACTURE316.3SURFACECONFIGURATION316.4PROPERTIESAND REQUIREMENTS32Page6.5DESIGNATION346.6DELIVERYCONDITIONS34APPENDICESAPURCHASINGGUIDELINES35BISOTHERMALRELAXATIONTEST36The Standard is downloaded from Standar

26、d SharingAccessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007CEXThe Standard is downloaded from Standard SharingAccessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007AccessedAccessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007STANDARDS AUSTRALIA/STANDARDS NEW ZEALANDAustralian/New

27、 Zealand StandardSteel prestressing materialsPart 1: General requirementsSE C T ION1S C O P EANDGENERA L1.1 SCOPEThis Standard specifies requirements for high tensile strength steel tendons to be used for prestressing concrete and for other similar purposes (e.g., masonry structures). It applies onl

28、y to tendons in the condition as supplied by the manufacturer. It does not cover requirements for anchorage devices (see Note 1) and materials used in conjunction with the prestressing steel in structural components.The specific properties for each type of prestressing steel are given in Sections 2

29、to 6, namely:(a)Section 2, As-drawn (mill coil) wire. (b)Section 3, Stress-relieved wire.(c)Section 4, Quenched and tempered wire. (d)Section 5, Strand.(e)Section 6, Hot-rolled bars with or without subsequent processing.NOTES:1Anchorage devices are covered by AS/NZS 1314.2Advice and recommendations

30、on information to be supplied by the purchaser at the time of enquiry and order are contained in the purchasing guidelines set out in Appendix A.1.2 REFERENCED DOCUMENTSThe following documents are referred to in this Standard: AS1199Sampling procedures for inspection by attributes1199.0Part 0: Intro

31、duction to the ISO 2859 attribute sampling system1199.1Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection1310Steel wire for tendons in prestressed concrete1311Steel tendons for prestressed concrete7-wire stress-relieved strand for tendons in prestressed conc

32、rete1391Metallic materialsTensile testing at ambient temperature1545Methods for the calibration and grading of extensometers2193Calibration and classification of force-measuring systems2505Metallic materials2505.2Method 2: Bars, rods and solid shapesBend tests2505.4Method 4: WireReverse bend testThe

33、The Standard is downloaded from Standard SharingAS2706Numerical valuesRounding and interpretation of limiting valuesAS/NZSISO 9001Quality management systemsRequirementsISO 9004Quality management systemsGuidelines for performance improvementsHB 18Guidelines for third-party certification and accredita

34、tionHB 18.28Guide 28General rules for a model third-party certification scheme for productsBS5896Specification for high tensile steel wire and strand for the prestressing of concreteISO6934Steel for the prestressing of concrete6934-5Hot-rolled steel bars with or without subsequent processing15630Ste

35、el for the reinforcement and prestressing of concreteTest methods15630-3Part 3: Prestressing steel1.3 DEFINITIONSFor the purpose of this Standard, the definitions below apply.1.3.1 BarA product obtained by hot rolling steel and supplied in straight lengths. It may be plain, ribbed or threaded (see C

36、lause 1.3.14). Processed bars are bars which are cold worked or heat-treated. Such bars may have an additional heat treatment, to give the required properties.1.3.2 Cast analysisChemical composition, as determined by analysis, of a sample of the molten steel duringcasting, taken during the casting p

37、rocess.1.3.3 Characteristic valueAccessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 20071.3.3.1 Lower characteristic value (CAccessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007The value of a property having a prescribed (high) probability (p) of being exceeded in a hypothetical unlimited

38、 series of standard tests.NOTE: The probability of a test value being below this value is (1 p).1.3.3.2 Upper characteristic value (CvU)The value of a property having a prescribed (high) probability (p) of not being exceeded in a hypothetical unlimited series of standard tests.NOTE: The probability

39、of a test value being above this value is (1 p).1.3.4 Cold-drawn wireA product derived from a hot-rolled rod by cold working through drawing dies or rollers. The wire is defined by the surface configuration (see Clause 1.3.14) and the followingmethods of treatment:(a)As-drawn (mill coil) wirewire in

40、 the condition after cold drawing. It may be covered by a residue of drawing lubricant, and is supplied in coils of mean diameterapproximately equal to that of the wiredrawing machine capstan.AccessedAccessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007(b)Stress-relieved wirecold-drawn wire th

41、at has been subjected to a stress-relievingheat treatment in a continuous in-line manner. The straightened wire is supplied in large diameter coils or in cut lengths.1.3.5 Characteristic minimum breaking forceThe specified ultimate or breaking force of a wire, strand or bar below which 5% of all act

42、ual breaking load test results may fall.1.3.6 Modulus of elasticity (E)The slope of the chord between 20% and 70% of the characteristic minimum breaking force and is based on the nominal cross-sectional area of the test piece.1.3.7 Nominal cross-sectional area (An)Defined for bar, wire and strand as

43、 follows:(a)Bar and wirethe cross-sectional area equivalent to the area of a circular plain bar or wire of nominal diameter.(b)Strandthe cross-sectional area calculated from the specified value for nominal massper length, taking the density of steel as 7850 kg/m3.1.3.8 Percentage total elongation at

44、 maximum force (Agt)The specified minimum value of the percentage total elongation at maximum force when tested in accordance with AS 1391.1.3.9 Proof force (Re0.1 or Re0.2)The 0.1% and 0.2% proof force are determined from the non-proportional elongation calculated using the nominal cross-section ar

45、ea and the specified characteristic minimumbreaking force.1.3.10 Quenched and tempered wireA product manufactured from a hot-rolled rod or cold-drawn wire, which has been subsequently heated to a high temperature, rapidly cooled to produce a martensitic structure and then tempered at a suitable temp

46、erature. The heat treatment is carried out using a continuous in-line process. The surface of the wire may be covered with a thin film of scale. The wire may be plain, ribbed, grooved or indented (see Clause 1.3.12). The product is delivered in coils.1.3.11 RelaxationRelaxation is a time dependent d

47、ecrease in stress when the strand, wire or bar is maintained at a constant strain. Relaxation is stated as a percentage of the initial force applied to the steel.NOTE: Relaxation should not be confused with creep, which is the change in strain at constant load.1.3.12 StrandA product consisting of tw

48、o or more wires spun together in helical form. The pitch and direction of spinning are the same for all the helical wires in the same layer. The pitch is appropriate to the size and type of strand. The strand is given a final stress-relievingtreatment, in the same way as stress-relieved cold-drawn w

49、ire (see Clause 1.3.4(b), and is delivered in coil form. Strand is classified as follows:(a)2 wire and 3 wire strandtwo or three wires, respectively, spun together over a notional common axis.(b)7 wire stranda straight core-wire around which are spun six helical wires on one layer.TheThe Standard is

50、 downloaded from Standard Sharing(c)19 wire stranda straight core-wire around which are spun two layers of wires.(d)Compacted stranda strand that has been compressed (e.g., by cold working after stranding) prior to the stress-relieving treatment.(e)Indented stranda strand that has the outer wires in

51、dented prior to stress-relieving.1.3.13 Stress-relieving treatmentA continuous short-term isothermal heat-treatment, designed to improve certain mechanical properties and relaxation characteristics. The heat-treatment may take either one of the following forms (procedure (b) giving lower relaxation)

52、:(a)Relax 1the straightened tendon is heat-treated while being maintained under minimal tension.(b)Relax 2the tendon is heat-treated while being maintained under conditions of high longitudinal strain.NOTE: Relax 1 and Relax 2 were formerly identified (in AS 1310 and AS 1311) as NormalRelaxation and

53、 Low Relaxation, respectively.1.3.14 Surface configurationA regular pattern impressed on the tendon at final hot-rolling or after final cold-drawing, as appropriate, to improve bond properties between tendon and concrete. A plain surface is one, which is devoid of periodical irregularities, such as

54、indentations or grooves.NOTE: Examples of typical configurations are described in Appendix C.1.3.15 Tensile strength (Rm)The quotient of characteristic minimum breaking force and the nominal cross-section area of the product expressed in megapascals (MPa).1.4 MANUFACTURING PROCESSSteel in accordance

55、 with this Standard may be made by any process except the air or mixed air/oxygen bottom-blown processes.1.5 REQUIREMENTSAccessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 20071.5.1 Chemical compositiAccessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007The chemical composition shall be rel

56、ated to the type of product and its size and tensile strength. In cast analyses, the content of both sulfur and phosphorus shall not exceed0.04%.If requested by the purchaser, the cast analysis of the steel shall be provided.1.5.2 Geometrical propertiesThe geometrical properties are based upon nomin

57、al diameters.Where the definition of geometrical properties by nominal diameters is insufficient or not appropriate, the geometrical properties may be defined by nominal cross-sectional area with specified tolerances and appropriate details of the surface configuration of the wire, strand or bar (se

58、e Sections 2 to 6).1.5.3 Mechanical properties1.5.3.1 GeneralThis Standard contains requirements for the following mechanical properties of the products covered:(a)Tensile strength (or characteristic minimum breaking force).AccessedAccessed by TAFE NSW - NORTH COAST INSTITUTE on 06 Oct 2007(b)Proof

59、force (or proof stress).(c)Percentage total elongation at maximum force (Agt).NOTE: The measured elongation is the total elastic and plastic elongation at maximum force with a reduction in load not exceeding 5% when measured in accordance with ISO 15630-3.(d)Modulus of elasticity and, if requested,

60、the stress-strain (or load-extension)relationship. (e)Ductility.(f)Isothermal relaxation.The specified tests and required values for each product are given in the relevant Sections of this Standard.1.5.3.2 Tensile propertiesThe following applies:(a)General The values for tensile strength, characteri