Engineering and Design: STANDARD PRACTICE FOR SHOTCRETE

1,81

MB

66

stron

6360

ID

UNITED STATES ARMY CORPS OF ENGINEERS

1998

rok

Table of Contents

Chapter 1

Introduction

Purpose 1-1 1-1

Applicability 1-2 1-1

References 1-3 1-1

Glossary 1-4 1-1

Background 1-5 1-1

Activities and Documentation 1-6 1-1

Point of Contact 1-7 1-2

Chapter 2

Types of Shotcrete and Applications

Why Shotcrete 2-1 2-1

Applications 2-2 2-1

Shotcrete Processes 2-3 2-2

Fiber-Reinforced Shotcrete 2-4 2-4

Silica-Fume Shotcrete 2-5 2-4

Polymer-Modified Shotcrete 2-6 2-4

Accelerated Shotcrete 2-7 2-5

Chapter 3

Materials, Proportioning, and Properties

Cementitious Materials 3-1 3-1

Aggregate 3-2 3-2

Water 3-3 3-2

Chemical Admixtures 3-4 3-2

Reinforcing Stee1 3-5 3-3

Fiber Reinforcement 3-6 3-4

Proportioning Shotcrete 3-7 3-4

Properties of Shotcrete 3-8 3-6

Chapter 4

Equipment and Crew

General Equipment 4-1 4-1

Dry-Mix Process 4-2 4-1

Wet-Mix Process 4-3 4-1

Auxiliary Equipment 4-4 4-1

Special Equipment 4-5 4-7

Crew Composition 4-6 4-7

Chapter 5

Preconstruction Testing and Evaluation

General 5-1 5-1

Nozzleman Certification 5-2 5-1

Mixture Proportioning Evaluation 5-3 5-1

Preconstruction Demonstration and Testing 5-4 5-1

Alternate Considerations 5-5 5-6

Chapter 6

Placement

Preparations 6-1 6-1

Batching and Mixing 6-2 6-2

Shotcrete Application Techniques 6-3 6-3

Rebound 6-4 6-8

Finishing 6-5 6-8

Curing and Protection 6-6 6-9

Repair of Surface Defects 6-7 6-9

Chapter 7

Quality Control

General Considerations 7-1 7-1

Preproduction Phase 7-2 7-1

Production Phase 7-3 7-2

Corrective Actions 7-4 7-4

Chapter 8

Quality Assurance

General Considerations 8-1 8-1

Preproduction Phase 8-2 8-1

Production Phase 8-3 8-1

Appendices

Appendix A

References

Appendix B

Glossary

Appendix C

Corps of Engineers Projects

Appendix D

Mixture Proportioning Sample Submittal