Millions of ground anchorages have been installed over the past 80 years with relatively few recorded failures. However, as permanent anchorages in service become older, the subject is of growing importance; particularly for anchorages installed over 30 years ago: many of which were designed with corrosion protection considered inadequate by today’s standards.
This book shows how routine inspection and monitoring can extend the service life of the anchored structures that represent key elements of a country’s infrastructure. Where inspection highlights unacceptable tendon corrosion or over-stressing, the results provide early warning of the need for precautionary or remedial measures, in order to safeguard the integrity of the anchored structure.
The findings in this book show that in spite of these benefits, sufficient attention is not currently paid to routine maintenance inspection and service behaviour monitoring.
Chapter 1 : Maintenance Testing and Service Behaviour Monitoring of Permanent Ground Anchorages
Chapter 2 : Inspection Procedures and Physical Conditions Recorded in Service
Chapter 3 : Service Behaviour Monitoring Procedures and Performance in Service
Chapter 4 : North American Dam Rehabilitation
Chapter 5 : Rock Bolts in Tunnels and Mines
Chapter 6 : Non-Destructive Integrity Testing
Chapter 7 : Corrosion Monitoring and Corrosion Protection Systems
Chapter 8 : Case Histories of Satisfactory Performance, Shortcomings and Failures in Service
Chapter 9 : Recommendations and Standards for Inspection, Monitoring and Repair
