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Home > News > ICRI Award > Surface Preparation

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CFRP Surface Preparation and Applacation

Because of the dust-sensitive equipment in the work area and the logistics of access to the deck soffit, sandblasting (the preferred method of surface preparation) was never an option. Dustless hand grinders with carbine grinding discs were used to develop the proper concrete profile for the CFRP application, which was installed in the positive moment region (under the deck) first.

 

After the surface profile was established, the following steps were followed to install the CFRP, in accordance with manufacturer's requirements:

arrow_blue Primer is applied.
 
arrow_blue Carbon fiber sheet, saturated with epoxy resin, is applied.
 
arrow_blue Second coat of epoxy saturate is applied.
 

 

Before proceeding with the installation of the CFRP, four test panels were installed to test its bond to concrete substrate. All tests exceed the manufacturer's specified 250 psi (1.7 MPa) bond strength and all failed in the concrete substrate, with the lowest test at 435 psi (3 MPa). This confirmed that proper surface preparation had been performed. Additionally, laboratory testing of the actual supplied and installed CFRP was conducted to determine its mechanical properties. Test data confirmed that they met the minimum manufacturer's design parameters.

 

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ACE Restoration & Waterproofing, Inc.
620 E. Walnut Ave.
Fullerton, CA 92831
714.526.7366
Fax: 714.526.7965

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ACE Restoration and Waterproofing Quick Service Overview:
Concrete repair; concrete restoration, structural upgrade, epoxy injection,
waterproofing, and more concrete technologies in Fullerton California (CA)
by ACE Restoration and Waterproofing.

Concrete Repair, Concrete Restoration, Epoxy Injection, Waterproofing

http://www.acerestoration.net/

 

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