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Strand Corrosion in Prestressed Concrete Structures.

Bibliographic Details
Main Author: Wang, Lei.
Format: eBook
Language:English
Published: Singapore : Springer, 2023.
Edition:1st ed.
Subjects:
Electronic books.
Online Access:Click to View
Table of Contents:
  • Intro
  • Preface
  • Acknowledgements
  • Contents
  • About the Author
  • 1 Brief Description of Prestressed Concrete Structures
  • 1.1 History and Development of PC Structures
  • 1.1.1 Reinforced Concrete Structures
  • 1.1.2 Prestressed Concrete Structures
  • 1.1.3 Main Methods of Prestressing
  • 1.1.4 Characteristics of PC Structures
  • 1.2 Practical Application of PC Structures
  • 1.2.1 Application of Prestressing Technology in Bridges
  • 1.2.2 Examples of Prestressing in Bridges
  • 1.3 Corrosion of Strand in Prestressed Concrete
  • 1.3.1 Mechanisms of Electrochemical Corrosion
  • 1.3.2 Mechanisms of Stress Corrosion
  • 1.3.3 Influence Factors of Strand Corrosion
  • 1.4 Contents of This Book
  • References
  • 2 Mechanical Behaviors of Corroded Prestressing Strands
  • 2.1 Introduction
  • 2.2 Corrosion Morphology and Microscopic Damage of Strands
  • 2.2.1 Corrosion Morphology of Prestressing Strands
  • 2.2.2 Microscopic Damage of Corroded Strands
  • 2.3 Corrosion Pits of Prestressing Strands
  • 2.4 Probability Distribution of Corrosion Pits
  • 2.4.1 Frequency Distribution of Corrosion Pits
  • 2.4.2 K-S Test of Pit Size Parameters
  • 2.5 Mechanical Behavior of Corroded Prestressing Strands
  • 2.5.1 Relation Between Load and Displacement
  • 2.5.2 Ultimate Strength, Strain, and Elastic Modulus
  • 2.6 Constitutive Model of Prestressing Corroded Strands
  • 2.7 Conclusions
  • References
  • 3 Corrosion-Induced Cracking of Prestressed Concrete
  • 3.1 Introduction
  • 3.2 Experimental Study on Corrosion-Induced Cracking
  • 3.2.1 Filling of Strand Corrosion Products
  • 3.2.2 Concrete Cracking Under Combined Prestress and Strand Corrosion
  • 3.3 Prediction of Corrosion-Induced Cracking in PC Beams
  • 3.3.1 Model for Corrosion-Induced Cracking
  • 3.3.2 Model Validation
  • 3.4 Meso-scale Modeling of Strand Corrosion-Induced Concrete Cracking.
  • 3.4.1 3D Corrosion Expansion Model of Helical Strand
  • 3.4.2 Meso-scale Model of Heterogeneous Concrete
  • 3.4.3 Model Validation
  • 3.4.4 Influencing Parameters for Corrosion-Induced Cracking
  • 3.5 Conclusions
  • References
  • 4 Bond Behavior Between Strand and Concrete with Corrosive Cracking
  • 4.1 Introduction
  • 4.2 Bond Behavior of Strand with Corrosive Cracking in Pull-Out Specimens
  • 4.2.1 Corrosion-Induced Concrete Cracking
  • 4.2.2 Concrete Strain
  • 4.2.3 Twisting of Strands
  • 4.2.4 Pull-Out Force and Slip
  • 4.2.5 Distribution of Bond Stress
  • 4.2.6 Bond Strength of Corroded Strand
  • 4.3 Bond Behavior of Corroded Strand in PC Beams
  • 4.3.1 Corrosion Loss and Corrosion-Induced Crack
  • 4.3.2 Effect of Corrosion on Force-Slip Response of Strand
  • 4.3.3 Failure Mode and Bond Strength
  • 4.3.4 Degradation of Strand Bond and Tensile Strengths
  • 4.4 Conclusions
  • References
  • 5 Bond-Slip Model of Corroded Strand Considering Rotation Effect
  • 5.1 Introduction
  • 5.2 Bond Strength of Strand Considering Rotation Effect
  • 5.2.1 Theoretical Expressions for Bond Strength
  • 5.2.2 Model Verification
  • 5.3 Model for Bond Strength of Corroded Strand
  • 5.3.1 Ultimate Bond Strength of Corroded Strand
  • 5.3.2 Corrosion-Induced Pressure at Bond Interface
  • 5.3.3 Confining Stress at Bond Failure
  • 5.3.4 Model Validation
  • 5.4 Model for Bond-Slip Between Corroded Strand and Concrete
  • 5.4.1 Method for the Local Bond Characteristics
  • 5.4.2 Local Bond-Slip Between Corroded Strand and Concrete
  • 5.5 Conclusions
  • References
  • 6 Prestress Loss and Transfer Length Prediction in Pretensioned Concrete Structures with Corrosive Cracking
  • 6.1 Introduction
  • 6.2 Calculation of Corrosion-Induced Expansive Pressure
  • 6.2.1 Prediction Model of Prestress Loss Under Corrosive Cracking
  • 6.2.2 Bond Degradation Due to Strand Corrosion.
  • 6.2.3 Calculation Flow Chart of Prestress Loss
  • 6.2.4 Evaluation of Effective Prestress
  • 6.2.5 Effective Prestress Evaluation
  • 6.2.6 Validation on Prestress Loss Model
  • 6.2.7 Prediction of Transfer Length Under Corrosive Cracking
  • 6.2.8 Calculation of Transfer Length
  • 6.3 Evaluation of the Transfer Length in Corroded PC Beams
  • 6.3.1 Specimen Design and Data Analysis
  • 6.3.2 Evaluation of Transfer Length Under Corrosive Cracking
  • 6.4 Model Validation and Parameter Sensitivity Analysis
  • 6.4.1 Verification of Proposed Model
  • 6.4.2 Effect of Material Parameters on Expansive Pressure
  • 6.4.3 Effect of Material Parameters on Transfer Length
  • 6.5 Conclusions
  • References
  • 7 Secondary Anchorage and Prestress Loss of Fractured Strand in PT Beams
  • 7.1 Introduction
  • 7.2 Literature Review
  • 7.2.1 Bonding Properties of Fractured Strand
  • 7.2.2 Prestress Loss of Fractured Strand
  • 7.3 Secondary Anchorage of Fractured Strand
  • 7.3.1 Strand Fracture Test
  • 7.3.2 Mechanism of Secondary Anchorage
  • 7.3.3 Secondary Transfer Length After Strand Fracture
  • 7.3.4 Residual Prestress in Secondary Anchorage of Fractured Strand
  • 7.4 Residual Prestress in PT Beams After Strand Fracture
  • 7.4.1 Calculation of Residual Prestress
  • 7.4.2 Relation Between Residual Prestress and Strand Fracture Position
  • 7.5 Numerical Model for Secondary Anchorage of Fractured Strand
  • 7.5.1 Numerical Model Generation
  • 7.5.2 Interfacial Bond-Slip Simulation
  • 7.5.3 Strand Fracture Simulation
  • 7.5.4 Model Validation
  • 7.6 Evaluation of Damage Control Section and Flexural Capacity After Strand Fracture
  • 7.7 Conclusions
  • References
  • 8 Flexural Behaviors of Corroded Post-tensioned Concrete Beams
  • 8.1 Introduction
  • 8.2 Design of Specimens with Different Defects
  • 8.3 Effect of Insufficient Grouting on Flexural Behaviors.
  • 8.3.1 Design of Insufficient Grouting
  • 8.3.2 Cracking Behavior
  • 8.3.3 Load-Deflection Response
  • 8.3.4 Ultimate Strength and Failure Mode
  • 8.4 Effect of Strand Corrosion in Insufficient Grouting on Flexural Behaviors
  • 8.4.1 Corrosion Characteristic of Strand
  • 8.4.2 Cracking Behavior
  • 8.4.3 Load-Deflection Response
  • 8.4.4 Failure Mode and Ultimate Strength
  • 8.5 Effect of Strand Corrosion in Full Grouting on Flexural Behaviors
  • 8.5.1 Corrosion of Prestressed Concrete Beams
  • 8.5.2 Cracking Patterns at the Ultimate State
  • 8.5.3 Load-Deflection Response
  • 8.5.4 Failure Mode and Ultimate Strength
  • 8.6 Conclusions
  • References
  • 9 Bearing Capacity Prediction of Corroded PT Beams Incorporating Grouting Defects and Bond Degradation
  • 9.1 Introduction
  • 9.2 Analytical Model for Flexural Capacity of PT Beams
  • 9.2.1 Simplified Calculation Method
  • 9.2.2 Calculation Procedure
  • 9.3 Model Validation
  • 9.4 Quantification of Corrosion-Induced Uncoordinated Deformation in Bond-Slip Zone
  • 9.4.1 Quantification Principle of Bond-Slip Zone
  • 9.4.2 A Quantitative Method for Uncoordinated Deformation
  • 9.5 Bearing Capacity Assessment Considering Bond Degradation
  • 9.5.1 Bonding Degradation Model
  • 9.5.2 Calculation of Bearing Capacity
  • 9.5.3 Model Verification
  • 9.5.4 Effect of Corrosion on Uncoordinated Deformation
  • 9.6 Conclusions
  • References.

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