KHIA headerKnow-How in Action

VOL XXIV, NO 40, ELITE

Belzona® Repairs Spalled Concrete

 
 

Industry:

Buildings & Structures (BSTR)

 
 

Application:

Roof Problem Areas (RPA)

 
 

Customer Location:

Community College, Newcastle

 
 

Application Date:

1980

 
 

Application Situation:

Local authority housing stock with concrete cantilever balcony construction and steel handrails.

 
 

Problem:

Concrete balcony had suffered from spalling due to the detrimental effects of the environment and concrete cover below the minimum for protection of the reinforcing bar.

 
 

Products:

Belzona® 4111 (Magma Quartz)

 

Substrate:

Reinforced Concrete

 
 

Application Method:

Application was carried out in accordance with Belzona Know-How System Leaflet RPA-2. Lightweight Belzona® 4141 system would now be specified as it requires no permanent shutter/formwork. This would have made the job even easier to carry out.

 
 

Belzona Facts:

The initial application was quick and eliminated any potential safety risk due to unsafe concrete falling from the two storey building. Twenty seven years later, Belzona revisited the application to find that it was still in excellent condition with no signs of further spalling, carbonation, shrinkage or cracking.

 
 

Photographs Description

Community College in 1980 Spalled Concrete Community College in 2007 Application revisited

 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com