423.8R-10 Report on Corrosion and Repair of Grouted Multistrand and Bar Tendon Systems

423.8R-10 Report on Corrosion and Repair of Grouted Multistrand and Bar Tendon Systems

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Description

This report gives general information regarding the evaluation of corrosion damage in structures reinforced with grouted multistrand and bar tendons. A review of current practice is included along with the historical background. Specific potential problem areas for grouted tendons are discussed for each critical part of the tendon. Current methods for evaluating corrosion damage and typical repair schemes are included.

Keywords: anchorage; bonded; corrosion; duct; durability; grout; posttensioning; prestressed; repair; strand; tendon.

 

Document Details

Author: Joint ACI-ASCE Committee 423

Publication Year: 2010

Pages: 10.00

ISBN: 9780870313950

Categories: Prestressed Concrete

Formats: PDF

Table of Contents

Chapter 1—Introduction

1.1—General

1.2—Background

1.3—Scope

1.4—Limitations

Chapter 2—Definitions

Chapter 3—Review of current practice

3.1—General

3.2—Grouting requirements

3.3—Tendon protection requirements

Chapter 4—Grouted tendons

4.1—Evolution of grouted tendons

4.2—Types of grouted tendons

4.3—Potential problem areas

4.4—Duct

4.5—Grout

4.6—Strand and bar

4.7—Anchorage hardware and protection

4.8—Performance record

Chapter 5—Evaluating corrosion damage

5.1—General

5.2—Monitoring

5.3—Nondestructive methods

5.4—Exploratory methods

Chapter 6—Repair schemes and methods

6.1—General

6.2—Grouting of voids

6.3—Tendon repair

Chapter 7—References

7.1—Cited references

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