ACI 222.2R 14:2014 Edition
$49.56
222.2R-14 Report on Corrosion of Prestressing Steels
| Published By | Publication Date | Number of Pages |
| ACI | 2014 | 52 |
This report covers various types of prestressing steel, including some discussion on metallurgical differences, and supplements information presented in ACI 222R to include topics specifically related to prestressing steels. 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. Appendixes present detailed information on stress corrosion cracking and hydrogen embrittlement issues in prestressed concrete and mitigation techniques. Keywords: anchorage; bonded; corrosion; duct; durability; grout; hydrogen embrittlement; post-tensioned; prestressed; tendon; strand; stress-corrosion cracking; unbonded.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | CONTENTS |
| 4 | CHAPTER 1— INTRODUCTION 1.1—Background |
| 5 | 1.2—Scope CHAPTER 2— DEFINITIONS CHAPTER 3— Prestressing Steels 3.1—Wire 3.2—Strand 3.3—Bar |
| 6 | CHAPTER 4— Deterioration of Prestressing Steel |
| 7 | CHAPTER 5— Protection Against Corrosion in New Construction 5.1—Introduction and history 5.2—Prestressing tendon materials selection |
| 10 | 5.3—Corrosion protection for prestressing systems |
| 16 | 5.4—Cathodic protection CHAPTER 6— FIELD EVALUATION 6.1—Introduction 6.2—Evaluation goals 6.3—Pretensioned structures |
| 19 | 6.4—Post-tensioned structures |
| 22 | CHAPTER 7— Remediation Techniques 7.1—Introduction 7.2—General 7.3—Bonded post-tensioned tendons |
| 24 | 7.4—Unbonded multistrand post-tensioned tendons |
| 26 | CHAPTER 8— FIELD PERFORMANCE OF PRESTRESSED CONCRETE STRUCTURES 8.1—Introduction |
| 27 | 8.2—Corrosion of prestressing strand before construction |
| 28 | 8.3—Pretensioned structures |
| 29 | 8.4—Unbonded post-tensioned structures |
| 31 | 8.5—Bonded post-tensioned structures |
| 33 | 8.6—Wire-wrapped prestressed structures Chapter 9— REFERENCES |
| 39 | Appendix A— Presstressing steel metallurgy A.1—Wire |
| 40 | A.2—Strand A.3—Bar Appendix B— Deterioration of Prestressing Steel B.1—Metallurgy of prestressing steels |
| 41 | B.2—Stress-corrosion cracking and hydrogen embrittlement |
| 42 | B.3—Case histories |
| 43 | B.4—Stress-corrosion cracking |
| 45 | B.5—Hydrogen embrittlement |
| 49 | B.6—Corrosion effect on fatigue performance B.7—Testing for SCC and HE |
