Civil Engineering Reference
In-Depth Information
FIGURE 8.4
Surface preparations by sandblasting.
application. Inside corners and concave surfaces require detailing to main-
tain an intact bond, as seen in Figure 8.6. Dust, dirt, oil, existing coatings,
and any other bond barrier material must be removed.
Bug holes and other voids need to be filled by putty and evened out prior
to FRP installation. Local out-of-plane variations like form lines must not
exceed 1/32 in. or 1 mm (ACI 440.2R-08). Such variations may be removed
by grinding prior to surface preparation or may be evened out using putty if
the variations are small. The concrete surface must be dry if it is to bond to
the FRP system.
•
Surface preparation for contact-critical application
FIGURE 8.5
Rounded beam corners by grinding.
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