KHIA headerKnow-How in Action

VOL XXXIII, NO 33

Belzona® Expansion Joint Repair Helps A Coal Mine Stay Environmentally Compliant

 
 

Industry:

Mining and Quarrying (MINQ)

 
 

Application:

Floor Problem Areas (FPA)

 
 

Customer Location:

Coal terminal, Alabama, USA

 
 

Application Date:

2017

 
 

Application Situation:

Expansion joints of a concrete dock.

 
 

Problem:

The existing rubber expansion joint material failed to stop coal from falling through the concrete dock and into the Bay waters, causing a potential environmental hazard.

 
 

Products:

Belzona 2211 (MP Hi-Build Elastomer)

Belzona 2911 (Elastomer QD Conditioner)

Belzona 4131 (Magma-Screed)

Belzona 4911 (Magma TX Conditioner)

 

Substrate:

Concrete

 
 

Application Method:

The repair area was pressure washed to remove all coal dust in and around the joint. Then, the metal nosing, all old rubber and other previously used joint materials were removed and the concrete areas were re-cleaned. Concrete areas were leveled by means of manual grinding. Belzona 4131 was used to build up the damaged concrete. Once Belzona 4131 was applied, this area was not accessible for any traffic until the following day, when Belzona 2211 was mixed and applied with the use of form boards and a backer rod.

 
 

Belzona Facts:

The application was carried out in accordance with a modified version of Belzona Know-How System Leaflet FPA-6. The Customer had used several other solutions, with no success. Originally, the Belzona Technical Consultant was called to discuss solutions for conveyor belts. During the discussion, an expansion joint repair was brought up. The Technical Consultant conducted a "trial" expansion joint repair, and upon its completion, the work on the rest of the expansion joints was conducted.

 
 

Photographs Description

1. Removal of nosing and damaged concrete. 2. Concrete restoration of Belzona 4131. 3. Backer rod inserted prior to an application of Belzona 2211. 4. Expansion joint repair complete.

 
Case study pic one

 

 
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 Case study pic three

 

 
 Case study pic four

 

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