Page 127 - TEESIN ECATALOGVER3-EN2020

FLOOR PREPARATION TIPS 127
NINE GRADES OF SURFACE ROUGHNESS
CSP1 CSP2 CSP3 CSP4 CSP5 CSP6 CSP7 CSP8 CSP9

Acid Grinding Light Light Medium Medium Heavy Scabbled Heavy
Etched Shotblast Scarifica- Shotblast Scarifica- Abrasive Scarifica-
tion tion Blast tion
The most effective reference tool for determine concrete surfaces profile is the molded rub-
ber comparator chips, available from the international concrete repair institute. These samples
replicate nine grades of surface roughness and designed for direct visual and tactile compari-
son to the concrete surface in question. There is no definitive text description for the nine grades.
CSP2-CSP9 Shotblasting propels steel CSP7-CSP9 Scabblers feature multi-
shot against the concrete ple pointed piston heads,
surfaces by means of a pneumatically-driven,
wheel. The impacts of the that pound the surface,
shot pulverize concrete chipping and crushing
and roughen the surface. it. They produce coarse,
Shotblasting is a preferred irregular surfaces and
method for cleaning and are often used to demol-
profiling horizontal sur- ish low crete structures.
faces with similar applica-
tions as abrasive blasting.
CSP4-CSP6 A scarifier consists of CSP4-CSP9 Grinding removes
rows of toothed wash- protrusions, surface con-
ers assembled on steel taminants and produces
rods that are mounted a smooth or polished
to a rotating steel drum. surface, depending on
As the drum spins, the roughness of the
the washers strike the abrading discs. The disc
surface, fracturing and moves at right angles
pulverizing concrete and to the surface and may
producing a striated pat- leave circular patterns or
tern. Scarifier only works gouges in the surface.
on horizontal surfaces.
Acid etching of concrete Hammers with different
floors is mainly used for heads can be fitted for
CSP1-CSP3 light duty applications as different purposes, such
the weakly bonded lai- as removing residues or
tance layer is not totally even breaking up con-
removed. Acid etching crete or standstone. Be-
does not remove surface cause they are not really
contaminants, which designed for removing
must be removed before the concrete surface
the acid etching process. itself, a csp number is
irrelevant to their action.