NOTE: Proper preparation of substrate is essential
for satisfactory performance of resinous floor
systems. Existing concrete floors should be
carefully inspected to determine condition. Based
on inspection, select most suitable surface
treatment:
Surface Condition
Surface Preparation Required
New Concrete:
Acid Etching and Air Drying
Old Concrete:
Acid contaminated
Neutralize with hot
alkaline cleaner, acid
etching, and air
drying.
Oil, fat or wax
Mechanical cleaning or
contaminated
steam cleaning.
Alkali contaminated
Acid etching and air
drying.
Painted
Mechanical cleaning or
paint stripping.
Adhesive or asphalt
Mechanical cleaning.
contaminated
Dust and dirt
Mechanical cleaning.
contaminated
Form oil, sealer
Mechanical cleaning.
or curing compound
contaminated
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**************************************************************************
NOTE: Select the applicable paragraph(s) from the
following:
**************************************************************************
3.1.1.1
Mechanical Cleaning
Completely remove dirt, wax, paint, laitance, and [_____] by grinding with
a terrazzo machine, sanding with coarse open grid sandpaper, sand blasting,
chipping, bush hammering, or wire brushing.
3.1.1.2
Steam Cleaning
Completely remove all animal fats, grease, oil, wax, and [_____] using a
high pressure steam cleaner equipped with a soap injection system. Scrape
the surface to remove any build-up of debris. Then thoroughly saturate the
surface with hot caustic solution. Allow the solution to remain on the
floor for 15 to 20 minutes. Apply steam, with caustic, over the presoaked
area until all contamination is removed. Leach the caustic residue from
the surface using one or more applications of steam without caustic. Flush
the floor with warm water.
SECTION 09670
Page 15