Case 3
Navigation
- Introduction
- Causes of Defects
- Good Practices
- Standards
- Maintenance and Diagnostics
- Remedial
- Similar Cases
- References
Cause of Defects
- Leaching of coloured compounds, which in mortar are only likely to be iron impurities giving brown stains.
- Leaching is also most serious at the joint areas possibly due to the water being retained and trapped externally during periods of rain.