KHIA headerKnow-How in Action


Belzona® Repair On Concrete Dam



Buildings & Structures (BSTR)



Wall Problem Areas (WPA)


Customer Location:

Michigan, USA


Application Date:

September 2016


Application Situation:

The face of the 100 yr old concrete hydro dam was damaged at the waterline due to ice and wave action.



The damaged area is partially submerged and the entire area frequently wet from wave action. The dam has been declared a historic site so repair materials need to closely match the appearance of the original material.



Belzona 4131 (Magma-Screed)

Belzona 4141 (Magma-Build)

Belzona 4911 (Magma TX Conditioner)






Application Method:

A temporary dyke was created around the area needing repair. Compressed air was used to blow the standing water off the damaged area. The surface was prepped with chisels and a bristle blaster. Dust and loose debris were blown off. The 4911 was applied and the repair was made with 4141 to just below the desired finish level. Finally a coat of 4131 was applied to finish the work .


Belzona Facts:

Belzona was chosen because of its rapid cure, non-shrink and superior adherence characteristics. Magma build was chosen due to the need to work without forms and Magma Screed for color and finish.


Photographs Description

1. Damaged area at waterline

2. Work in process.

3. Finished repair

Case study pic one


 Case study pic two


 Case study pic three




For more information about Belzona visit: