First of all, if you want epoxy
you have to decide what purpose you want. You should consult our experts and
choose the right system considering the weights to put pressure on the coating.
A thin epoxy coating should not be applied to a floor that will have heavy load
on it. After these choices are made, the job is ready.
It is then filled with epoxy
repair paste. The relative humidity in the application environment of the epoxy
should be at most 80 percent. After the primer application is finished, the
process is continued as sandy or sandy coating. Then the intermediate layer is
applied. It is necessary to wait at least 12 hours between coats during
application. Coating is a process that requires extreme care and speed because
the prepared mixture can be frozen for 20 to 40 minutes due to the hardeners
introduced into it.
Preparing the mixture and
starting to freeze until applied to the surface causes the quality of the paint
to decrease with time. After the process is over, it should be waited 24 hours
to walk on the ground and 1 week to load on it. Otherwise, long-life structure
and aesthetic appearance may not be expected.
A. How is epoxy applied on screed and
concrete surfaces?
1. Cleaning and surface
preparationFloor preparation is the most important step in epoxy coating. Dirt,
oil, dust and so on. must be removed from the bed of materials and a floor
suitable for adhesion of the epoxy should be uncovered. These operations should
be done on hard grounds with light sanding machines and on harder grounds with
ground milling machines containing hard abrasives. After this process, cracks,
cracks, parts should be filled with epoxy mortar
A Surface Prepared with Vacuum
Ball Machine (Blastrac)
Before applying polyurethane or
epoxy flooring-paint, it is prepared for application of reinforced concrete
floor lining. It is the mechanical strength of the low strength slag layer on
the concrete surface, the removal of loose particles by mechanical methods and
the roughing of the surface. The surface preparation and therefore the surface
coating to be applied to the industrial coating must have a compressive
strength of at least 25 N / mm² and a pull-off strength of at least 1.5 N /
mm².Surface preparation is actually a kind of sand. Reinforced concrete surface
is made by throwing very small metal balls. The machine that does this is
called "Vacuum Ball Mill". The Blastrac brand has become the name of
the machine.
If we summarize the areas of use
of the vacuum ball method:
In order to prepare and clean the
surfaces before application of coatings, paints, primers, etc.,
To remove traces of old coatings
and air tires,
To remove lines and marks in
motorways, roads, jogging paths, and industrial facilities,
In order to increase the road
concept and therefore road safety,
With conventional methods,
surface preparation which is theoretically required and can not be done. The
surface preparation stage is very important in industrial flooring work. If the
surface preparation is not done correctly, the primer will not penetrate the
floor sufficiently and there will be a risk of swelling in the coating made
over time.
One of the most important
benefits of using a vacuum ball mill for surface preparation is; on the one
hand to take the sherbet layer by roughening and on the other hand to make the
surface ready for primer application by purifying the dust, oil and corn. In
short, surfaces that are roughened by the vacuum-forming machine become ready
for primer application.
Ground erosion process
Priming, Surface and Crack Repair
Construction:
Powder and so on. Although most
of the materials will be removed from the surface in the course of floor
cleaning and surface preparation, they will still remain on some dust floor.
Here, the lining is glued to the surface and the bridges between the top layer
and the floor are observed. In addition, if moisture is present on the floor or
if there is a chance of moisture coming from the floor, moisture-tolerant
surface lining should be used in order to ensure the long life of the coating.
Cracks, pits, fractured and
segregated areas are repaired with epoxy lining and epoxy mortar. 4-5 mm deeper
and wider repairs can also be made with cement based repair mortars suitable
for epoxy coating. If the cracks are deep and there is a risk of water coming
from the ground, priority should be given to preventing water from coming in.
Mezzanine application
The floor must be smooth before
the final layer coating, there should not be too much fluctuation on the
surface. Pits, cracks, holes, etc. the sections should be corrected. Otherwise,
such pits will appear in the topcoat and the surface smoothness will
deteriorate. Since this is an undesirable situation, it is possible to obtain a
smooth surface by applying intermediate layer before final layer coating.
Intermediate layer applied surface
Finishing coat
After the drying of the
intermediate layer application, the surface is again wiped with lightly wiping
machines, if any, the parts are filled and the surface is coated with the
desired feature. (Such as plain, textured, rough)Finishing coat finish surface
B. How is epoxy applied on ceramic
surfaces?
The application of epoxy on
ceramic surfaces is not much different from the application on concrete
surfaces. The most important issue on ceramic surfaces is the removal of the
glaze layer of the ceramic surface by abrasive machines. If this erosion
process is not carried out (which is quite excessive), the epoxy ceramic can be
separated from the surface over time. The second important issue is that
ceramic joints must be completely closed during the application of the
intermediate layer. Joint marks are completely covered with additional
intermediate layer epoxy application or self-leveling prior to epoxy
application. Only then can the final coat epoxy coating be applied. It is very
important to control the strength of the ceramics on the surfaces which have
been used for a long time and which require epoxy coating. If the ceramics are
to be removed from the ground, this means that it will stay in the epoxin.
Therefore, it is absolutely necessary to repair the ceramic before the epoxy or
the self-leveling floor should be leveled.
C. Types of Soil Applied
New Floors
The pouring of concrete at the
level of the earth should be preceded by a suitable infrastructure for the
water supply so that water leaking out at the soil level below the concrete and
the formed noun will accumulate under the epoxy coating and over time the self
leveling coating should be prevented from splashing, bursting and separating
from the surface.The use of steel trowel in unbaked plastered concrete should
not be used as it will shine the surface and shrink the surface. This process
should be done with a tray of a helicopter type trowel or with a wooden trowel.
During curing of concrete, it is necessary to wet the surface well, cover it
with damp cloths and protect it from frost, rain and sun rays in order to
prevent creep cracks and force losses on the surface.
It is absolutely necessary to
take the cement slurry on the concrete floor. Since this layer is not well
adhered to the concrete, it will degrade over time depending on the traffic,
and it also removes the adherent epoxy layer from the surface. The most
suitable method for this is sandblasting. The loose cement layer is removed
from the surface by spraying on the selected fine sand surface by the sweeping
method in consideration of the condition of the surface and concrete. Wet
sanding is useful in environments where the dust will run or the environment
will be uncomfortable. The disadvantage of this method is that it is time for
the drying of the concrete in the future which must be completed quickly in
cold weather. Wiping, grinding and grinding-type abrasive machines are also
suitable for this work.
Cement screed
Screed is a cementitious leveling
concrete that is not suitable for use on floors with high mechanical resistance
and poor adhesion, heavy traffic and impacts. If it is inevitable to use it, it
should not be poured in a thickness less than 14 cm. The flooring in the
substructure should be scored on the concrete and before 15-20 minutes before
the screed sprinkle, the additive should be applied and the additive cement
slurry should be applied between the old concrete and the concrete to serve as
an adherence bridge. Sand granulimetry to be used on the basin should be close
to that used in coarse water. A roughness such as an abrasive paper surface is
ideal for good adhesion.
Mosaic Flooring
Pretreatments vary depending on
the condition of the floor. The new mosaic floors should not be polished, if
possible with light sanding or mosaic wiping machine, dry wiping and acid
wiping.
Old Floors
It is not enough to visually
check the surface for moisture. Because moisture rising in the form of water
vapor does not concentrate on the surface and can cause a great error.Soil
cracks should be thoroughly investigated, if dilatation joints are sufficient,
and whether the joint filler material is elastic or not. After the fillings are
broken and the edges are broken and the joints are filled and filled with epoxy
mortars, they are prepared before epoxy coating with local repairs. In some
cases the existing old floor may not be suitable for application. In this case,
it is more economical and quick to pour concrete again on concrete with a
thickness of 8-10 cm.