1) Product Brief Introduction
The self leveling method of epoxy resin mortar is to apply a layer of epoxy resin paint on the original ground to achieve dust prevention, wear resistance, pressure resistance, non sanding, oil penetration resistance, easy cleaning, and aesthetic decoration
2) Product Features
① Beautiful, dustproof, and easy to clean;
② Firmly bonded to the base surface, wear-resistant and durable;
③ Resistance to mild chemical corrosion;
④ Has good impact resistance and wear resistance;
⑤ Suitable for heavy load floors.
3) Applicable location
Suitable for industrial factories, such as electronics, electrical appliances, food, chemical, pharmaceutical, textile, clothing, tobacco and other industries;
◇ All cement or terrazzo floors in parking lots, garages, supermarkets, and other special areas.
◇ Dust free walls and ceiling finishes with purification requirements, purification workshops, etc.
4) Base surface requirements
Firstly, the requirements for the ground surface mainly include: the cement base surface is firm, firm, and does not peel, and the concrete layer is poured together with the mortar leveling layer. If the concrete layer is poured first, the thickness of the mortar layer is required to be no less than 3cm, and the strength should be above C25. The thickness should be designed according to the floor load; The surface is not sanded, has good hardness, and there is no cement powdering phenomenon. It is required to use ordinary Portland cement 425 # and pour cement mortar layer for sufficient maintenance; The cement base surface is flat, without unevenness, honeycomb and pitted surfaces, or cement lumps; The flatness of the ground shall not exceed the required thickness for painting (using a 3-meter ruler for leveling); The surface is dry, clean, without oil stains, with a moisture content of less than 6%. Within the first 5 days of entering the construction site after the curing period of the cement floor, it is not allowed to wash or mop the floor with water; The pH value of the floor surface should be between 6.0 and 8.0;; The slope should meet the design requirements, with a deviation value of 2% of the slope and no more than 30mm.
Subsequently, there will be inspection and preparation of the construction foundation, measurement of compressive strength, determination of bonding strength, measurement of the wetness of the foundation, understanding of the climatic environment, and understanding of the environmental temperature (temperature). On this basis, preparation and cleaning will be carried out. If the pollution caused by grease, engine oil, or organic/inorganic acids/or cement surface is not completely removed, it will affect the bonding performance of any completed ground. Therefore, it is necessary to use mechanical methods to clean the surface until the inner layer of the knot, and check by measuring the bonding strength.
Next, develop a ground treatment plan. The key to the ground coating process lies in the treatment of the coating substrate, which is related to whether the coating layer can firmly adhere to the ground and whether the coating layer is flat and bright. Therefore, it must be highly regarded. In order to achieve the desired effect of painting, for the ground that has not yet been leveled, the leveling process on the construction site can be intervened in; After about 28 days of drying the cement layer, use a polishing machine to polish the ground as a whole, making its surface flat and all the cement pores open. For cement floors with oil stains (edible oil, engine oil), first spray a surface treatment agent on the ground surface that has been washed with water, and repeatedly scrub until there is no oil stain; For floors with high alkalinity (pH>8), first neutralize with a neutralizing agent and then rinse with clean water; For wet ground, it should be dried by absorbing water, wiping it dry, shining it with a sun lamp, and blowing it dry with a hot air fan to meet the construction requirements; For floors with old paint, such as diamond sand floors and old paint floors, the old paint should be mechanically removed first, and then the defective floors should be treated to improve the adhesion of the new coating and the service life of the painted floor; For deeper expansion joints, colored elastic adhesive must be used to fill them first, and then quick drying hard paint putty should be used to scrape them flat. For expansion joints that have already been filled with asphalt, the asphalt in the joint should be scraped flat to at least 50mm below the thickness of the cement mortar powder layer on the ground level, and strive to be flat, with a height difference of less than 1mm. After 28 days of curing and sufficient drying, the strength must reach over 3000psi.
5) Common problems and solutions in the foundation
◇ Local hollowing treatment method: First, use a brush to clean the cracks Dust free, drill holes in the original hollow area per square meter, and use a high-pressure epoxy grouting machine to fill the holes with polymer epoxy grouting, thereby playing a role in bonding and anchoring
◇ Crack treatment method: Use a cutting machine to cut both sides of the crack to a width of 5 centimeters, clean it with a brush (the foundation at the opening is dry and free of floating dust), and use a high-pressure epoxy grouting machine to fill the cut joint with polymer epoxy grouting.
◇ Large area hollowing treatment method: knock off the original hollowing ground according to the area, clean the removed foundation, keep the foundation surface free of dust and laitance, and fill the entire area with cement-based grouting
◇ Dust and sand removal treatment method: Select a plan for polishing, reinforcing, or renovating the ground based on the degree of dust and sand removal.
6) Construction process
① Grassroots cleaning: Use a broom to clean the ground to be treated, then use a grinding tool to grind and remove surface impurities, and roughen the original ground surface to enhance the adhesion between the coating and the ground. Use an industrial vacuum cleaner to completely clean the dust, and the surface must be flat, sturdy, and thoroughly dry. The surface grease, soil, etc. must be thoroughly removed;
② Bottom coating: Mix the bottom coating evenly in proportion, and then apply it evenly on the plain ground using a roller. The wall base should be brushed with a brush, and after about 4-8 hours of natural curing, the mortar can be applied in the middle. Check the application of the bottom coating, and if it is completely absorbed by the substrate, it can be repeated. It is required to be uniform, without holidays, and with a penetration of more than 1mm;
③ Epoxy batch coating: After mixing the epoxy composite material with quartz powder in proportion, use a batch knife to scrape the epoxy putty layer, which requires leveling and polishing. After obtaining a complete and smooth surface, the next process can proceed;
④ Surface coating: After evenly mixing and stirring the A/B agent according to the ratio, use a serrated trowel for troweling construction, with a requirement of 1mm. Only personnel can enter after 48 hours of natural curing, and heavy machinery can enter after seven days. Do not use it on your own during the curing period.
7) Precautions
① Materials should be placed indoors to avoid wind and rain. If they have to be placed outdoors, they should be neatly stacked on pallets and covered with adhesive tape to avoid water ingress. They should not be placed for a long time.
② The material stacking location should strictly prohibit fireworks.
③ During the construction period, all on-site controls are strict.
④ Some types of materials may produce soft deposits during storage. Please mix well before use.
⑤ The main agent and hardener need to be weighed in proportion and stirred evenly.
⑥ When the humidity is above 85% and the temperature is below 10 ℃, avoid construction.
⑦ Materials should be placed indoors to avoid wind and rain. If they have to be placed outdoors, they should be neatly stacked on pallets and covered with adhesive tape to avoid water ingress. They should not be placed for a long time.
8) Engineering structure diagram
9) Product parameters
10) Engineering Cases
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