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.
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
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
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.
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.
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.
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.