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SECTION 03 35 43 Updated April 6, 2011
2.
Remove oil spots with emulsifier and oil absorbent material followed by
detail scrub with high pH detergent.
3.
Scrub floor with automatic scrubber capable equipped with soft brushes or
pads. Use proper dilution of pH neutral detergent.
4.
Clean the floor completely of materials and debris.
5.
Protect adjacent surfaces as required to prevent damage by the concrete
polishing procedure.
6.
Set up grinding machine, dust extraction system, tooling and, if necessary,
generator.
3.03
POLISHING
A.
Follow the polishing guidelines as listed in the project specification. The floor
finish and process steps will vary depending on customer requirements and
expectations. Below is a general guideline for a light salt and pepper concrete
floor application. If exposed aggregates are desired by the owner, metal bond
Quick Change tooling will be used in a 30 grit, 70 grit and 120 grit sequence.
1.
Repair and fill any surface cracks as necessary.
2.
Thoroughly clean the floor surface as specified in Section 3.02.
3.
Start the process with a 50 grit Calibra Ceramic bonded diamond until a
uniform scratch pattern is achieved. Vacuum the floor thoroughly using
squeegee vacuum attachment.
4.
Continue the process with 100 grit Calibra Ceramic bonded diamond until
a uniform scratch pattern is achieved. Vacuum the floor thoroughly using
squeegee vacuum attachment.
5.
Install penetrating densifier as per manufacturer’s recommendation.
6.
Continue the process with 220 grit V-Harr
®
Resin bonded diamond tools.
Vacuum the floor thoroughly using squeegee vacuum attachment.
7.
Continue polishing with 400 grit V-Harr
®
Resin bonded diamond tools.
Vacuum the floor thoroughly using squeegee vacuum attachment.
8.
Continue polishing in succession with each resin diamond pass as listed
below to progressively polish the floor slab to the desired level. Vacuum
the floor thoroughly using squeegee vacuum attachment between each
step.
a)
800 grit V-Harr
®
Resin bonded diamonds – low gloss.
b)
1800 grit V-Harr
®
Resin bonded diamonds – medium gloss.
c)
3500 grit V-Harr
®
Resin bonded diamonds – high gloss.
9.
Apply Prosoco LS Guard/Lavina Glow by Prosoco surface treatment. Use
of pump up air sprayer with a fine conical tip and microfiber applicator
required.
10.
High speed burnish with a V-Harr
®
Buff diamond impregnated burnishing
pad to complete the floor finish.
