THERMAL EXPANSION/CONTRACTION IS NO MATCH FOR BELZONA
Industry: Pulp & Paper (PLPR)
Application: VPF-Valves, Pipes and Fittings (VPF)
Substrate: Cast iron and steel.
Customer Location: Pulp and paper company in Alabama, U.S.A.
Application Date: 1994
Products:
Belzona® 4211 (Magma-Stop)
Belzona® 2131 (D&A Fluid Elastomer)
Problem: The concrete has a different coefficient of thermal expansion/contraction than the metal pipe. The result of this difference, is the erosion of the metal pipe at the interface, and subsequent leaks.
Photograph Descriptions
- View of pipe leaking at the floor penetration
- Repair completed with Belzona® 4211 (Magma Stop) and Belzona® 2131 (D&A Fluid Elastomer)
Application Situation
Steel wastewater process pipe through concrete floor.
Application Method
The application was carried out in accordance with Belzona Know-How System Leaflets VPF-11b and FPA-7.
Belzona Facts
Belzona® 4211 (Magma Stop) was used to stop the active leak, without interrupting the process flow. Once the leak had been stopped, Belzona® 2131 (D&A Fluid Elastomer) was used to encapsulate the repair perimeter and absorb the movement of the two substrates. It is a good idea to rough cut around the perimeter of the Belzona repair and pour the elastomer in this joint to allow for movement.
