Galvanized Steel Reinforcement in Concrete

Front Cover......Page 1
Galvanized Steel Reinforcement in Concrete......Page 4
Copyright Page......Page 5
Contents......Page 6
Preface......Page 12
Contributing Authors\' Biographical Notes......Page 14
1.1. Introduction......Page 19
1.2. Corrosion Prevention in Reinforced Concrete......Page 22
1.3. Coated Steel Reinforcement — General Principles......Page 23
1.4. Galvanized Reinforcing Steel......Page 24
1.5. Corrosion Model for Galvanized Steel in Concrete......Page 33
1.6. Applications of Galvanized Reinforcement......Page 36
1.7. Summary......Page 44
References......Page 45
2.1. Introduction......Page 49
2.2. Current Design Specifications......Page 51
2.3. The Ubiquitous Nature of Exposure......Page 52
2.4. The Need for Protection of Steel in Concrete......Page 54
2.5. Design Strategy for Structural Integrity......Page 59
2.6. Design Implications of Galvanized Reinforcement......Page 60
2.7. Durability of Concrete with Galvanized Bars......Page 66
2.8. In Situ Performance of Galvanized Reinforcement......Page 78
2.9. Concluding Remarks......Page 81
References......Page 83
3.1. The Steel Environment in Concrete......Page 89
3.2. The Initiation–Propagation Model for Corrosion of Steel......Page 90
3.3. Integrated Corrosion Forecasting......Page 94
3.4. Strategies to Improve Durability......Page 96
References......Page 101
4.1. Introduction......Page 105
4.2. The Hot-Dip Galvanizing Process......Page 109
4.3. Metallurgy of the Galvanized Coating and Alloy Structure......Page 111
4.4. Fabrication of Galvanized Products......Page 116
4.5. Zinc Inhibitors......Page 122
4.6. Codes of Practice and Standards......Page 123
4.7. Field Handling Techniques......Page 125
References......Page 126
5.2. Galvanized Reinforcement as a Protection Method......Page 129
5.3. Behavior of Galvanized Steel in Aggressive Media......Page 146
References......Page 159
6.1. Introduction......Page 163
6.2. Some Early Research......Page 165
6.3. The 1970s......Page 167
6.4. The 1980s......Page 171
6.5. The 1990s......Page 187
6.6. 2000 and Beyond......Page 201
6.7. Summary......Page 207
References......Page 210
7.2. The Islands of Bermuda......Page 217
7.3. Previous Investigations......Page 219
7.4. Longbird Bridge Revisited — 1995......Page 224
7.6. Performance of Black Steel in Bermuda......Page 225
7.7. The Watford Bridge — A Case Study......Page 227
7.8. Economic Case for Galvanized Reinforcement......Page 233
7.9. Practical Considerations......Page 234
7.10. Continued Use of Galvanized Reinforcement in Bermuda......Page 236
References......Page 238
A.2. Scope of Work......Page 240
A.3. Results of the Investigation......Page 241
A.4. Summary and Conclusions......Page 244
References......Page 245
8.1. The Significance of Bond......Page 247
8.2. Failure in Bond......Page 253
8.3. Evaluating Bond Strength......Page 256
8.4. The Bond Stress-Slip Relationship......Page 259
8.5. Evaluation of Bond in a Flexural Member......Page 261
8.6. New Developments in Concrete......Page 264
8.7. Coated Reinforcement and Bond......Page 267
8.8. Effect of Rib Geometry and the Coating......Page 279
8.9. Design Standards and Bond......Page 280
8.10. Concluding Remarks......Page 281
References......Page 282
9.1. A Brief History......Page 289
9.2. The Corrosion of Steel in Concrete and Protection Systems......Page 291
9.3. Design for Durability......Page 293
9.4. The Performance of Galvanized Reinforcement......Page 298
9.5. Conclusions......Page 302
References......Page 303
Colour Plates......Page 305
Index......Page 311