following procedures relate primarily to concrete surfaces.
1 - PREPARE SURFACE
to receive the application must be sound and free of dust, grease,
compounds and other foreign particles. Concrete substrate is prepared
by either sandblasting, water blasting or wire brushing. Allow
concrete to dry completely. Cracks greater than 0.010" (0.25mm)
must epoxy injected, and other surface irregularities may need
to be ground down or repaired per engineer's inspection.
specified, anchor holes should be drilled per specifications.
STEP 2 - PRIME
MIX EPOXY PRIMER
mix or use Automatic Mixer to mix parts A and B from Hex-3R
Epoxy A and B component drums. Mix thoroughly for 5 minutes,
as per instructions, using paddle-style mixer. Be sure to refer
to resin data sheets for information on pot life and mixing
APPLY EPOXY PRIMER
areas to be treated should be primed with Hex-3R Epoxy. Use
a roller to apply one coat of the Epoxy to the wrapping area.
Wait a minimum of 1 hour for the surface to become "tacky"
and sufficient substrate penetration to occur.
3- PREPARE FABRIC
should be pre-cut to appropriate lengths or cut using commercial
heavy-duty scissors/shears. Care should be taken to clean cut
the edges as frayed or worn fabric can degrade performance.
fabric is fully impregnated with Epoxy resin (See Resin Selection
Table or refer to engineer's specifications for appropriate
product selection) mixed according to the instructions in Step
2, A. and applied by hand or by using a mechanical Fabric Saturator.
Cover a smooth flat level surface with polyethylene sheeting
(0.5mm [20mil] plastic film) approximately the same length
as the Hex-3R Wrap Sheets to be used. Pour a bead of the mixed
Epoxy down the center of the sheet and spread, using a spatula,
to cover the entire surface.
the cut Hex-3R Wrap Sheet onto the primed plastic sheeting,
and apply another bead of Epoxy to the top surface.
saturate the Wrap sheet by using either a spatula or roller
to smoothly spread the Epoxy over the fabric surface. Saturation
is achieved when the fiberglass appears clear and transparent
or the surace of the carbon fabric has a sheen to it yet still
appears to have some texture.
to the Operating Instructions for the mechanical Fabric Saturator.
Equipment for the Hexel Fabric Saturator instruction
Saturated fabric should be used immediately.
STEP 4 - WRAP FABRIC
wet fabric is applied to the surface as per the engineering specifications.
Fabric should be wrapped applying uniform pressure using a spatula
or surface roller to eliminate air bubbles. Where specified, multiple
layers should be applied individually waiting a minimum of 1 hour
between each application. (Check Applications section for
information on specific strengthening applications and details
on installation recommendations.)
after each layer is applied, use a wetted roller to apply additional
epoxy in any areas that do not appear to be fully saturated.
STEP 5 - FINISHING
upon the application and engineer's specifications, one or more
of the following finishing options may be used:
SURFACING (For aesthetic value)
following surfacing should be applied within the cure time of
the prior layer (see Data Sheets), while the surface is tacky.
If the prior layer has cured, sand or bead blast before surfacing:
concrete textured surface: trowel Hex-3R Epoxy 301T over final
layer of reinforcement.
smooth surface: roll or brush Hex-3R Epoxy 301 over final layer
a canvas textured surface: roll or brush one layer of Hex-3R
106 Fiberglass saturated with Hex-3R Epoxy 300 resin. While
tacky, coat with Hex-3R Epoxy 301.
FIRE COATINGS (For increased fire resistance)
the prior layer is tacky, (within the cure time as shown on
the product data sheets) trowel on Hex-3R FireLam 505 37 mils
thick. Allow to cure 20 hours, and then brush, roll, or spray
Hex-3R FireLam 506 in 3 coats at .04 pounds per square foot,
waiting until each coat dries (at least 4 hours) before applying
PAINT (For aesthetic value and UV protection)
prior layer is dry but still tacky, paint surface with acrylic
or linear urethane paint. If the surface has completely cured
before painting, sand or bead blast prior to painting.