HONDA MK SG-2 - Manual (Page 50)

MK SG-2 Revision 11/01, Effective Date November 13, 2001 Page 50
THEORY
THEORY OF SCARIFYING
The purpose of scarifying is to make scratches, superficial incisions or roughen a surface. There are a
number of ways in which a concrete surface can be roughened, the advantage of a scarifying machine, is that
it allows the user to control the amount of material removed over a large area.
A scarifier can be used to clean, level, roughen, groove, slot, or prepare a concrete surface for coating. The
scarifier is able to perform each of these operations by using different types of cutting discs that are setup in
different configurations on a cutting drum.
By varying the type of cutting disc and configuration of the cutting drum, a user can:
• Clean a surface of oil, grease, or paint prior to applying a coating or sealer
• Level high spots or misaligned joints
• Remove carpet or tile adhesives as well as paint
• Roughen or create non-slip surfaces
• Slot concrete surfaces for overlays
• Cut safety grooves to minimize slippage
Scarifier cutting discs are either carbide tipped or steel, and are star-shaped in design. Cutting discs may
have five or more “points,” and the ends may be round, pointed or blunt depending on application.
Cutting discs designed with carbide inserts tend to be the most commonly used due to their extended life. As
the disc is used, more of the carbide insert is exposed until the disc is worn below the bottom of the insert.
Once worn below the insert, the disc must be replaced.