|
DESCRIPTION
|
CORRO-DUR 198 is a unique formulation that has excellent
tolerance to dampness in concrete resulting from water jetting or immersion
service. CORRO-DUR 198 is formulated with no volatile solvents and
is so completely tolerant of water that it may be applied to damp or wet
surfaces yet still function well as a reinforced seal coating or injection
resin. Applications may be made using brush or roller with no especial
ventilation requirements-odor during application is almost completely
absent. CORRO-DUR 198 may also be used in glass reinforced epoxy systems
where toughness and flexibility is required. The long potlife, predictable
cure rate and total absence of surface ”blush” together with excellent
physical and chemical resistance make CORRO-DUR 198 ideal for applications
exposed to harsh industrial or marine conditions.
|
|
USES
|
|
PENETRATING SEALER
|
Used
to seal and protect concrete, brick and similar surfaces against chemical
attack and penetrating by water leading to freeze-thaw damage.
|
|
REINFORCEMENT
PENETRANT
|
May be installed using standard crack injection methods to seal
and reinforce cracks in concrete structures such as dams. Adheres strongly even to wet
concrete surfaces.
|
|
|
APPEARANCE
|
|
GLOSS
|
Unabsorbed is full gloss
|
|
COLOUR
|
Clear, slightly amber
|
|
|
PHYSICAL PROPERTIES
|
|
VEHICLE TYPE
|
Epoxy / Proprietary
Polyamines
|
|
PIGMENTATION
|
None
|
|
INDUCTION TIME
|
Not required – may be used
immediately after mixing
|
|
POT LIFE
|
45 minutes @ 77°F (25°C)
|
|
SOLIDS
BY VOLUME
|
100%
|
|
MIXING RATIO
|
1 : 1 by volume
|
|
REC. DRY FILM THICKNESS
|
5 mils (127 microns)
|
|
REC. WET FILM THICKNESS
|
5 mils (127 microns)
|
|
THEO. SPREAD RATE
|
320 sq.ft. / gal. @ 5 mils
|
|
DRY TIME (TOUCH)
|
6 hours @ 77°F (25°C)
|
|
DRY TIME (HARD)
|
24 hours handling, 36 hours
light service @ 77°F (25°C)
|
|
APPLICATION METHOD
|
Roller, brush or injection
|
|
SHELF LIFE
|
12 Months under normal
storage conditions
|
|
VOC
|
Essentially Zero
|
|
|
SAFETY INFORMATION
|
|
FLASH POINT
|
212°F (100°C)
|
|
STORAGE
CONDITIONS
|
Normal
|
|
|
SURFACE PREPARATION
|
Bare Concrete: Surfaces should be allowed
to cure for a minimum of 20 days before coating. Excessive weak surface laitance
must be removed by either acid etching, or, preferably, abrasive sweeping
before coating. Aged, uncoated concrete surfaces are best prepared by
abrasive sweeping. Unless carried out properly acid etching can give
unpredictable results due to inadequate etching or inadequate rinsing, for
this reason abrasive blasting is the preferred method of preparation.
Contamination by oil or grease should be removed with an industrial
degreaser before either abrasive blasting or acid etching.
|
|
MIXING PROCEDURE
|
CORRO-DUR 198 is normally supplied in
2-gallon kits of comprising 1 gallon of epoxy base and 1 gallon of curing
agent packed in one gallon steel cans. Larger kit sizes of 4 gallons and 10
gallons total kit size are available on special order. A “jiffy” type mixer
with a high torque motor is recommended for proper blending. Pour the
curing agent into the base in a clean mixing vessel and mix for about 2
minutes taking care to stir in all material from the edges and base,
unmixed material will never harden. No induction or “sweat-in” time is
required and the mixed material may be used immediately.
An epoxy repair mortar is easily made by adding
an equel volume of clean, dry sand to the mixed CORRO-DUR 198 and stirring
thoroughly – add more sand if a stiffer mix is required.
Pot
life and reaction time is heavily dependent on temperature, as a general
guide figure that each 18°F (10°C), variation in temperature above or below
77°F (25°C), will respectively halve or double the pot life and cure times.
|
|
APPLICATION
|
Brush and roller application is
straightforward and requires no special technique. The material will
thicken in cold weather and will be noticeably heavier at temperatures of
50°F and below. If permissible to use solvent it will be found that 5-10 of
lacquer thinner or MEK will greatly viscosity in cold weather allowing much
easier application.
When used as scaler, take care not t over
apply the product, which will result in areas of unabsorbed, glossy surface
that will be slippery when wet. Note: should this occur it is possible to
apply a thin coat of CORRO-DUR 198 followed by a light broadcast of 24-36
mesh abrasive such as aluminium oxide or sand backrolled into the wet
coating, this will yield an attractive, slip resistant surface.
When
a glossy surface is desired over an absorbent substrate such as concrete or
brick it will be necessary to apply at least two coats of CORRO-DUR 198.
the first coat will penetrate and seal. After this seal coat has cured for
about three hours minmum a “glaze coat” of CORRO-DUR 198 may be applied at
about5 mils thickness, (320 sq.ft. per gallon), to yield a tough, high
gloss finish. A light broadcast of abrasive such as Aluminium Oxide or
silica sand backrolled into this coat will provide enhanced slip resistance.
|
|
CURING
BEFORE SERVICE
|
CORRO-DUR 198 will cure to a hard film wthin 24 hours and is
suitable for light traffic after this time.
|
|
TRANSPORTATION
|
USDOT, IATA & IMO "Non-Regulated" – (00000 VERSION)
|
