Case 3
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- Introduction
- Causes of Defects
- Good Practices
- Standards
- Maintenance and Diagnostics
- Remedial
- Similar Cases
- References
Cause of Defects
- Concrete may be carbonated by the carbon dioxide from vehicle exhaust. This infused carbon dioxide reacts with the calcium hydroxide in concrete thus neutralising the alkaline environment.
- Honeycombs in the concrete structure may accelerate the carbonation process, resulting in cracking due to volume increase from the formation of rust.
- It is also possible that moisture from the soil causes this corrosion induced crack when concrete, exposing the reinforcement to moisture, is excessively porous.
- Poor maintenance might cause the origination of water seepage due to the failure in taking adequate corrective maintenance for the crack promptly.
Corrosion Inhibitor Technologies – Courtesy of Sika