222.2R-01
Corrosion of Prestressing Steels
2001, 43 pp.
$54.50

This report reflects the current understanding of corrosion of prestressing

steels in concrete. The report includes chapters that cover the various types

of prestressing steel, including some discussion on metallurgical differences.

Deterioration mechanisms are discussed, including hydrogen

embrittlement and stress-corrosion cracking. Methods to protect prestressing

steel against corrosion in new construction are presented, along with a

discussion of field performance of prestressed concrete structures. Finally,

field evaluation and remediation techniques are presented.

Contents:
Chapter 1—Introduction, p. 222.2R-2

1.1—Background

1.2—Scope

Chapter 2—Prestressing steels, p. 222.2R-3

2.1—Wire

2.2—Strand

2.3—Bar

Chapter 3—Deterioration of prestressing steel,

p. 222.2R-4

3.1—Introduction

3.2—Deterioration of prestressing steels

3.3—Metallurgy of prestressing steels

3.4—Stress-corrosion cracking and hydrogen embrittlement

3.5—Case histories

3.6—Stress-corrosion cracking

3.7—Hydrogen embrittlement

3.8—Corrosion effect on fatigue performance

3.9—Testing for SCC and HE

Chapter 4—Protection against corrosion in new

construction, p. 222.2R-15

4.1—Introduction

222.2R-2 ACI COMMITTEE REPORT

4.2—Prestressing tendon materials selection

4.3—Corrosion protection for prestressing systems

4.4—Cathodic protection

Chapter 5—Field evaluation, p. 222.2R-25

5.1—Introduction

5.2—Evaluation goals

5.3—Pretensioned systems

5.4—Post-tensioned systems

Chapter 6—Remediation techniques, p. 222.2R-30

6.1—Introduction

6.2—General

6.3—Grouted post-tensioned systems

6.4—Ungrouted post-tensioned systems

Chapter 7—Field performance of prestressed

concrete structures, p. 222.2R-32

7.1—Introduction

7.2—Corrosion of prestressing strand before construction

7.3—Pretensioned structures

7.4—Unbonded post-tensioned structures

7.5—Bonded post-tensioned structures

Chapter 8—References, p. 222.2R-38

8.1—Referenced standards and reports

8.2—Cited references