Summary
Corrosion is a major concern in engineering due to its serious effects on structures. For buried steel components of OHL foundations, the risk of corrosion is even more significant due to the wide variability in soil chemistry, humidity and conductivity. This relevant TB addresses scenarios such as steel corrosion in soil, in concrete, and above-ground foundations. It also covers corrosion inspection and detection methods, as well as refurbishment and repair technologies.
Table of content
Executive Summary
1. Introduction
2. Purpose
3. Corrosion
3.1. What is Corrosion?
3.2. Corrosion Products
3.3. The Consequences of Corrosion
3.4. Appearances of Corrosion
3.5. Common Forms of Corrosion of Embedded Steel
4. Corrosion of Steel Foundations in Soil
4.1. Causes of Corrosion in Soils
4.2. Corrosion in Buried Metal Structures
4.3. Preventing Corrosion of Steel in Soil
4.4. Grillage Foundations
4.5. Anchors
4.6. Steel Pile Foundation
5. Corrosion of Steel in Concrete Foundations
5.1. General
5.2. Corrosion in Concrete
5.3. The Mechanisms of the Tower Concrete Foundation Steel Corrosion
5.4. The Factors Influencing the Steel Corrosion Inside the Concrete Foundation
5.5. Prediction of the Reinforced Foundation Life
5.6. Refurbishment of the Foundations for a Better Steel Corrosion Protection
5.7. Corrosion Behaviour of Galvanized Steel in Concrete Foundations
5.8. Preventing of Steel Corrosion in Concrete Foundations
6. Corrosion of Steel at Ground Level Interfaces
6.1. Steel Corrosion on Soil to Air Interface Area / Ground-Line Corrosion
6.2. Steel Corrosion on Concrete to Air Interface Area
6.3. Flooding of Foundations
6.4. Direct-Embedded Pole Towers
6.5. Grout Under Base Plates
7. Inspection and Detection Methods for Corrosion
7.1. Desk Study
7.2. Visual Inspection
7.3. Corrosion Maintenance Based on Digital Systems
7.4. Soil Sampling and Soil Tests
7.5. Corrosion Detecting Methods
7.6. Non-Destructive Tests
7.7. Wireless Corrosion Monitoring
7.8. Non-destructive Methods for Determination of Reinforcement Steel Corrosion in Concrete
7.9. Destructive Methods for Determination of Reinforcement Steel Corrosion in Concrete
8. Case Studies / Examples
8.1. Corrosion of Steel Foundation in Soil
8.2. Corrosion of Steel in Concrete Foundation
8.3. Corrosion of Steel at Ground-Level Interfaces
8.4. Inspection and Detection Methods for Corrosion
Summary and Conclusions
Additional informations
| Publication type | Technical Brochures |
|---|---|
| Reference | 978 |
| Publication year | |
| Publisher | CIGRE |
| ISBN | 978-2-85873-683-6 |
| Study committees | |
| Working groups | WG B2.65 |
| File size | 27 MB |
| Pages number | 342 |
| Price for non member | 300 € |
| Price for member | Free |
Keywords
Steel corrosion, transmission line foundations, concrete corrosion, sub-surface corrosion
