How to Diagnose Concrete Structure Pool Leaks and Rectify Them in Oman. The diagnosis is technically sound—the defects we listed (honeycombing, poor compaction, weak mix, improper sleeve sealing, and cold joints) fully explain the widespread leakage observed during the water test. This is not a minor seepage issue; it’s a systemic permeability failure of the RCC shell.
Overall Assessment
Water Tech Fountains’ approach is structured and technically aligned with standard repair philosophy, combining
- Structural crack treatment (stitching + epoxy injection)
- Joint rehabilitation (re-profiling + grout)
- Surface waterproofing (multi-layer cementitious system)
However, the success will depend on execution quality and a few critical gaps.
What You Did Correctly (Strong Points)
Crack Treatment
- Stitching using 10 mm bars @ 100 mm spacing → Good for structural restraint
- Epoxy injection (Fosroc) → Correct for dormant cracks
- Surface sealing with epoxy paste → prevents backflow
This is structurally valid
Joint Rectification
- Removing weak concrete at construction joints → Very important
- Forming 45° fillet instead of 90° → Excellent practice
- Use of MAPEI Groutme 60T → good non-shrink structural repair mortar
This improves the bond and reduces stress concentration
Multi-layer Waterproofing
- Use of SikaTop 107 with mesh → standard system
- Multiple coats → improve durability
This is a valid negative-side waterproofing approach
Internal Treatment
Crack injection + plaster + waterproofing → correct sequencing. Epoxy injection was used here as FOSROC Nitofil EPLV. This specialized repair technique with correct materials involves pumping low-viscosity, two-part epoxy into cracks in concrete with stainless steel injection packers.
External Treatment (Basement side)
Crack injection + plaster + waterproofing → correct sequencing. Epoxy injection was used here as FOSROC Nitofil EPLV. This specialized repair technique with correct materials involves pumping low-viscosity, two-part epoxy into cracks in concrete with stainless steel injection packers.
All honeycomb repair by MAPEI Groutme 60T non-shrinking thixotropic fiber mortar and FOSROC Brushbond TGP. FOSROC Brushbond TGP penetrates all small cracks and seals before the cementitious waterproofing.
Recommended Improvements (High Priority)
Add Crystalline Waterproofing Layer
After surface prep:
- Apply crystalline slurry (e.g., Xypex / Penetron type)
This will:
- Penetrate concrete
- Block micro-pores
For more details and site inspection
