Case Study – Brick Manhole Chambers
| Substrate | 10 x Brick Manhole Chambers |
| Size | Manholes all approx 600mm x 600mm at various depths, ranging from .75m to 2m deep |
| Purpose | Drainage system on chemical plant |
| Condition | Various, ranging from a very severe build up of mineral deposits to oil and grease residue and had previously been coated with an unknown material plus minor structural defects. |
| Repair details | Chemicals were leaking into the water table causing pollution issues with EA. A sealed system was required because the drains had recently been re-lined because a sealed system was required |
| Preparation | Where required the manhole was isolated using inflatable drain plugs and then high pressure power washed. Previous coating was removed using a scabbler. Mineral build up was removed using a CP9 and scabbler. The oil/grease residue was removed using acetone. |
| Spray | 1 coat at 6mm applied |
| Time Scale | approx 7 days |
Before
After
