Floor Covering Technical Specification
3 mm Self Leveling Epoxy Coating
Reinforced Concrete Surfaces on which Epoxy Coating Application
will be applied : In the reinforced concrete floor where epoxy coating will be applied, the concrete compressive strength must be at least 25 N / mm 2 and the concrete surface tensile strength must be at least 1.5 N / mm 2 . Tensile strength will be made with a tensile tester (Pull Off Tensile Tester). While the field concrete is poured, tensile stresses will be taken into account and double layer steel mesh or reinforcement suitable for the project will be placed. Surface hardener will not be used when pouring field concrete in the area where epoxy will be applied.The reinforced concrete surface will be smoothed properly while the tray is installed in the trowel, and a smooth and smooth surface will be obtained. Joint cutting will be carried out within the framework of general engineering rules in order to control possible cracks in the field concrete. In order to start the epoxy coating process, the relative humidity of the concrete must be below 4%. Although it depends on the season and ambient conditions, at least 4 weeks should pass after the concrete pouring. If the required moisture conditions and waiting times cannot be achieved, different primer and coating systems will be considered.
Temperature and Humidity:
Forepoxy coating application, the ambient and concrete surface temperature must be between + 10 ° C and + 30 ° C. The concrete moisture rate should be 4% by weight unconditionally and the relative humidity in the environment should be less than 80%. Relative humidity; It must be below the “Condensation Temperature”, also known as the dew point. Concrete moisture will be measured with a humidifier, when necessary, the ambient temperature will be increased.
In reinforced concrete floors suitable for epoxy coating; Surface preparation is made in order to remove possible loose particles, weak slurry layer, oil and dirt layer, if any, and roughen and clean the surface. Epoxy coating surface preparation will be done with a vacuum ball blasting machine (Shot Blasting-Blastrac) or similar surface preparation machines. At the end of the surface preparation process, the surfaces will be clean, dry, free from oil and dirt layer, and curing materials, if any. Weak concrete will be removed, eyelet voids and holes will be repaired in accordance with the technique. Cement laitance on reinforced concrete surfaces will be removed by using abrasive equipment and the surfaces will be made open porous. The high places on the surface will be abraded, sanded and cleaned. All dust on the application surface,Loose and volatile particles will be removed with a brush and broom.
If there arepits, fractures and cracks on the reinforced concrete surface, segregations are made with epoxy primer and epoxy mortar. If the cracks are deeper than 4-5 mm and have a large area, cement-based repair mortars may also be preferred. If there is a danger of water coming from the floor, the option of filling the crack section by epoxy injection should be reviewed. If the reinforced concrete slab is working and there is a risk of cracking in the existing coating, it should be applied with glass fiber. If capillary rise of water or moisture cannot be prevented by epoxy injection, possible leakage areas should be filled with polyurethane injection method. In this case, attention should be paid to moisture content conditions and waiting times before applying epoxy.
Mixing the Materials:
While preparing the epoxy material, first component A (epoxy resin) will be mixed with a low-speed (300-400 rpm) mixer, while the mixing process continues, component B (epoxy hardener) will be added slowly until the material becomes homogeneous, The mixing process will take at least 3 minutes.
Epoxy Primer Application:
The reinforced concrete surface, which has been prepared, cleaned and repaired and meets the minimum humidity conditions, Solvent Free Epoxy Dekapol CP203 is ready for Primer application. Like other materials to be used in the application, epoxy primer will be solvent-free. Epoxy primer consumption will be 500 g / m² and 500 g / m² quartz filler will be entered in it. After the application with a trowel, sand will be sprinkled on the application with a consumption of 1.0 kg / m². Epoxy primer; It penetrates into the concrete, fills the voids, increases the impact and chemical resistance of the surface, adheres to the reinforced concrete surface with a very high resistance. It enables the coating to be integrated with the reinforced concrete surface by adhering to the layers that come after it.
Intermediate Layer Application:
Solvent-free epoxy primer applied surfaces will be protected from moisture, dust and air flow, and will not be opened to pedestrian or vehicle traffic. Depending on the weather and ambient temperature, a solvent-free epoxy intermediate coat will be applied on it 8-24 hours after the primer application. The excess of silica-quartz filler that we have sprinkled will be removed with the help of industrial brooms. Epoxy intermediate coat will be applied in the desired color and with a trowel. Solvent Free Epoxy Dekapol ML340 Intermediate Layer material will be applied with a consumption of 800 gr / m². The application will be made with a trowel, and the filling will be filled with a consumption of 400 gr / m².
Epoxy Coating Topcoat Application:
After the epoxy intermediate layer application, the surfaces will be protected from moisture, dust and air flow. It will not be opened to pedestrian or vehicle traffic in any way. Depending on the weather and ambient temperature, solvent-free epoxy paint will be applied as a top coat 8-24 hours after the intermediate coat application. Sanding can be done depending on the desired and needed surface roughness. Solvent-free Epoxy Dekapol SL340 Self Leveling Coating material will be applied in the desired color with a notched trowel at a consumption of 1.7 kg / m² with 500 g / m² filling, and air bubbles will be removed with a spiked roller. Depending on the weather and ambient temperature, the application area can be opened to pedestrian traffic within 24-48 hours.
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