Case Study – Concrete Manholes in Brisbane
| Substrate | 1 x Concrete Manhole used in Trunk Line Sewer, Size = 1050 dia x 2.7m deep + biscuit |
Condition | The manhole was in need of repair due to severe high levels of H2S attack and erosion. |
Preparation | The chamber was vented above and below the chamber on the sewer line and then an air mover was used to increase the ventilation and airflow. A high pressure power wash was followed by acid etch, wash down and then dried using the air mover. |
| Spray Application | Spraying took 1.5 hours including the preparation. 1 coat of Epoxy was applied at 6mm using approx 40 gallons of Epoxy resin |
Outcome | Redlands Shire Council were impressed with the outcome, more work followed. |
Before; – with the temporary pipe to protect the epoxy spray from live sewer.
Condition before spraying
Preparation finished and spraying commences
Complete Spray
