BS 5896-2012

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BSI Standards Publication

BS 5896:2012

High tensile steel wire and

strand for the prestressing

of concrete – Specification

Publishing and copyright information

The BSI copyright notice displayed in this document indicates when the document

was last issued.

Published by BSI Standards Limited 2012

ISBN 978 0 580 74461 7

ICS 77.140.15; 91.080.40

The following BSI references relate to the work on this standard:

Committee reference ISE/104

Draft for comment 11/30241968 DC

Publication history

First published April 1980

Second (present) edition, May 2012

Amendments issued since publication

Date Text affected

BS 5896:2012 BRITISH STANDARD

Contents

Foreword ii

1Scope 1

2Normative references 1

3Terms and definitions 1

4Symbols 3

5Classification and designation 4

6Information to be obtained by the manufacturer 5

7Requirements 5

8Evaluation of conformity 7

9Test methods 11

10 Delivery conditions 12

11 Wire requirements 13

12 Strand requirements 17

Annexes

Annex A (normative) Product families 22

Bibliography 23

List of figures

Figure 1 – Evaluation of tests results and a unit of inspection testing route 10

Figure 2 – Indentation type T1 14

Figure 3 – Indentation type T2 14

List of tables

Table 1 – Symbols and corresponding designations 4

Table 2 – Force ranges for various types of prestressing steels in the axial load

fatigue test 7

Table 3 – Definition of unit of manufacture, unit of product and unit of

inspection 8

Table 4 – Minimum frequency of sampling and testing for factory production

control of wire 9

Table 5 – Minimum frequency of sampling and testing for factory production

control of strand 9

Table 6 – Coefficient kas a function of a number (n) of the test results for a

reliable failure rate of 5% (p= 0.95) at a probability of 95% 11

Table 7 – Specified indentation dimensions for indent type T1 (also known as

triple indent) 14

Table 8 – Specified indentation dimensions for indent type T2 (also known as

Belgian indent) 14

Table 9 – Dimensions and properties of wires 16

Table 10 – Additional test requirements; prestressing wire only 17

Table 11 – Specified indentation 18

Table 12 – 7-wire strand – Dimensions and properties 20

Table 13 – Additional requirements for prestressing strand 21

Table A.1 – Product families 22

Summary of pages

This document comprises a front cover, an inside front cover, pages i to ii,

pages 1 to 24, an inside back cover and a back cover.

BRITISH STANDARD BS 5896:2012

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摘要：

BS 5896-2012 是英国标准协会发布的关于混凝土用高强度钢筋和预应力钢丝的标准规范，旨在取代旧版 BS 5896:1980。该标准详细规定了用于预应力混凝土结构的冷拔钢丝、钢绞线以及高强度钢筋的技术要求、尺寸公差、机械性能、化学成分、测试方法和合格评定程序。遵循 BS 5896-2012 可确保材料具备良好的抗拉强度、屈服点、延伸率和松弛性能，从而提升结构的安全性与耐久性。本标准适用于桥梁、高层建筑、大型基础设施等预应力工程，是工程设计、质量检验及出口贸易中符合英国市场准入的重要依据。

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BS 5896-2012

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