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Thermal Expansion/Contraction Is No Match For Belzona



Pulp & Paper (PLPR)



Valves, Pipes and Fittings (VPF)


Customer Location:

Pulp and paper company in Alabama, U.S.A.


Application Date:



Application Situation:

Steel wastewater process pipe through concrete floor.



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.



Belzona® 4211 (Magma-Stop)

Belzona® 2131 (D&A Fluid Elastomer)



Cast iron and steel.


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.


Photographs Description

  1. View of pipe leaking at the floor penetration
  2. Repair completed with Belzona® 4211 (Magma Stop) and Belzona® 2131 (D&A Fluid Elastomer)
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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