NCHRP Report 558: Manual on Service Life of Corrosion-Damaged Reinforced Concrete Bridge Superstructure Elements
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  • Status: Final Book
  • 72 pages
  • Downloads: 57
NCHRP Report 558:
Manual on Service Life of Corrosion-Damaged Reinforced Concrete Bridge Superstructure Elements
(2006)
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Overview

Authors

Description

TRB's National Cooperative Highway Research Program (NCHRP) Report 558: Manual on Service Life of Corrosion-Damaged Reinforced Concrete Bridge Superstructure Elements examines step-by-step procedures for assessing the condition of corrosion-damaged bridge elements. It also explores procedures that can be used to estimate the expected remaining life of reinforced concrete bridge superstructure elements and to determine the effects of maintenance and repair options on their service life. NCHRP Web-Only Document 88 contains the data used in the development and validation of the service life model described in NCHRP Report 558. Also, the computational software (Excel spreadsheet) for the service life estimation process is available.

Topics

  • Transportation — Maintenance and Preservation
  • Transportation — Bridges and Other Structures
Contents

Table of Contents

skim chapter
Front Matter i-xii
Chapter 1 - Introduction 1-1
Manual Organization 2-2
Introduction 3-3
Development of an Evaluation Protocol 4-4
Visual Survey 5-5
Delamination Survey 6-7
Chloride Ion Content Analysis 8-8
Corrosion Potential Survey 9-9
Petrographic Analysis 10-10
Selection of Tests for Corrosion Condition Evaluation 11-12
Basis of a Model 13-13
Diffusion of Chloride Ions 14-14
Time to Damage 15-15
Diffusion Models Proposed in Literature 16-16
Model for Black Steel 17-18
Susceptibility Index (SI) 19-20
Introduction 21-23
Formulation of a Repair and Corrosion Control Strategy 24-25
Patching Materials 26-26
Reinforcing Bar Coatings 27-27
Corrosion Inhibitors 28-29
Overlays 30-30
Membranes 31-31
Sealers and Surface Coatings 32-32
Corrosion Inhibitor Overlays (Bridge Decks) 33-33
Electrochemical Chloride Extraction 34-36
Overview of Procedures for Designing Repair and Corrosion Control System 37-38
Sampling Size 39-39
Selection of Repair and Corrosion Control System 40-41
Planning for Corrosion Condition Evaluation 42-43
Delamination Survey 44-44
Continuity Testing - Direct Current Method 45-46
Core Sampling - Chloride Ion Distribution 47-47
Corrosion Potential Survey 48-48
Patching Excavated Areas 49-49
Visual Inspection of Epoxy-Coated Bars 50-50
Preparation of Chloride Cores 51-51
Powdering the Chloride Core 52-52
Bridge Information Page 53-53
Core Processing Page 54-54
Model Results Page 55-55
Cl Distribution Page 56-56
References 57-59
Abbreviations used without definitions in TRB publications 60-60

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