Protective Coating Works
Ram Services Limited is a specialist in the technique of protecting concrete structures using a range of coating technologies.
Problem:
To coat a series of newly constructed concrete bunds within water treatment works across Lancashire, to protect against high concentration acid eroding the bund.
Solution:
Stage 1: Determine the coating material
- Due to the high concentration of acid to protect the parent concrete against, working alongside the client’s design team, careful consideration of the correct material of choice was measured.
Stage 2: Grit blasting to prepare the surface
- As the bunds were newly cast, the concrete was prepared using grit blasting techniques, removing the visible surface laitance and providing the necessary mechanical key for the protective coating to adhere to, in full accordance with the manufacturer’s guidelines.
Stage 3: Parent concrete structurally improved prior to coating
- Extensive honeycombing was noted post preparation, specifically in the bund walls.
- Ram Services Limited advised the client to consolidate the parent concrete utilising a BS EN 1504-3 certified, Class R4, fairing coat. The fine micron size of aggregates within the fairing coat, sealed the parent concrete which would prevent any pin holes forming during the protective coating works.
- Following the detailed preparation and consolidation works, a rapid setting cementitious waterproof fillet detail was installed at all wall / base slab intersections, the purpose is to ease the transition of the proposed coating from the walls of the bund on to the slab resulting in a homogenous coating throughout.
Stage 4: Bund primed and coated
- The bund was primed then coated with a protective, chemical resistant polyurethane.
Additional Benefits to the Client:
The finish was aesthetically pleasing and, due to the levels of both preparation and required consolidation works pre-application of the coating, the work was delivered defect free and will ensure the concrete will reach its intended design life.
Have a question or need assistance? Contact us today. Our team is here to help you with anything you need.