Description

This manual is used in conjunction with PTI’s Bonded Post-Tensioning – Field Installation/Field Specialist training program. The course is intended to train field personnel involved in the installation, stressing, grouting, and inspection of grouted post-tensioning systems. The manual focuses on multi-strand tendons; however, post-tensioned bar systems are also covered. It includes a discussion of post-tensioning system materials and components, materials testing, installation, stressing, grouting, corrosion protection, safety, and troubleshooting.

105 pages; 8.5 x 11 in. (soft cover)

Published 2007

Table of Contents

1. INTRODUCTION TO POST-TENSIONING

1.1 Objectives

1.2 Section Goals

1.3 Theory of Prestressed Concrete

1.4 Benefits of Post-Tensioning

1.5 Types of Post-Tensioning Systems

1.6 Grouted Post-tensioning Applications

2. POST-TENSIONING SYSTEM MATERIALS AND COMPONENTS

2.1 Objectives

2.2 Section Goals

2.3 Responsibilities

2.4 Post-Tensioning Systems

2.5 Components

2.6 Storage and Handling

2.7 Traceability of Components

2.8 Definitions

3. MATERIAL PROPERTIES AND TESTING

3.1 Objectives

3.2 Section Goals

3.3 Terminology

3.4 Post-Tensioning System Qualification

3.5 Prestressing Steel

3.6 Sampling and Approval of Components

3.7 Testing by the Contractor

4. INSTALLATION

4.1 Objectives

4.2 Section Goals

4.3 Tools and Equipment

4.4 Installation of Duct Assemblies

4.5 Installation of Prefabricated Tendons

4.6 Splices and Connections

4.7 Location and Assembly of Inlets and Outlets

4.8 Mandrels

4.9 Protection of Ducts during Concrete Placement

4.10 Installation of Anchorage Assemblies

4.11 Checking for Leaks and Blockages

4.12 Installation of Pre-Stressing Strands

4.13 Installation of Pre-Stressing Bars

4.14 Protection of Prestressing Steel

4.15 Installation of the Anchor Heads and Wedges

4.16 Protection of Ducts after Concrete Placement

5. TENDON STRESSING OPERATIONS

5.1 Objectives

5.2 Section Goals

5.3 Principals of the Hydraulic Jack

5.4 Determining Stressing Forces

5.5 Stressing Equipment

5.6 Assembly & Operation of Stressing Equipment

5.7 Preparation for Stressing

5.8 Stressing of Tendons

5.9 Finishing of Tendons

5.10 Lift-Off

6. GROUTING

6.1 Objectives

6.2 Section Goals

6.3 Tools and Equipment

6.4 Written Grouting Procedures

6.5 Checking for Blockage Prior to Grouting

6.6 Mixing Procedures

6.7 Pumping Procedures

6.8 Grouting of Vertical Tendons

6.9 Post Grouting Procedures

6.10 Incomplete Grouting

6.11 Grouting Records

7. CORROSION PROTECTION OF TENDONS

7.1 Objectives

7.2 Section Goals

7.3 Corrosion Protection Strategies

7.4 Corrosion Protection at Anchorages

7.5 Duct

7.6 Temporary Corrosion Protection

8. CONSTRUCTION DOCUMENTS

8.1 Objectives

8.2 Section Goals

8.3 Construction Documents

8.4 Project Specifications

8.5 Structural Drawings

8.6 Approved Post-Tensioning Installation Drawings

8.7 Rebar Shop Drawings

8.8 Tendon Fabrication Sheets and Other Shipping Documents

8.9 Material Certifications

8.10 Stressing Equipment Calibrations

8.11 Stressing Records

8.12 Grouting Records

9. SAFETY

9.1 Objectives

9.2 Section Goals

9.3 Safety Considerations

9.4 Safety Coordination

10. TROUBLE SHOOTING

10.1 Objectives

10.2 Section Goals

10.3 Problems that Occur During Installation of Prestressing Steel

10.4 Honeycombing and improper concrete Consolidation

10.5 Problems that Occur During Stressing Operations

10.6 Problems that Occur During Grouting Operations

11. REFERENCES

APPENDIX A – SAMPLE ELONGATION CALCULATIONS

APPENDIX B – SAMPLE STRESSING RECORD

APPENDIX C – SAMPLE GROUTING RECORD

ADDENDA AND ERRATA INFO

Any applicable addenda or errata are included with individual documents at the time of purchase. For a listing of and access to all product addenda and errata, visit the Addenda and Errata page. Errata page.

Return/Exchange Policy

Printed / Hard Copy Products: If your order is damaged, defective, or incorrect, we acccept its return without question within 30 days of purchase. Returns shipped COD are not accepted. University bookstores and other resellers must receive authorization from PTI to return books in resaleable condition. Authorized returns in resaleable condition are subject to 15% restocking fee.

Electronic /Downloaded Products & Online Learning Courses: These items are not eligible for return.