Concrete surface moisture content tester, temperature and humidity meter, gas mask, concrete strength rebound tester, chemical fire extinguisher, angle grinder, portable cutting machine, safety helmet, work clothes, flatness tester, laser scanner, magnetic broom, electric stove, melting pot, steel chisel, hammer, protective gloves, medium-sized industrial electric fan.
(1) Before epoxy self-leveling construction, the base shall be inspected and accepted. Handover procedures shall be completed only after qualification.
(2) Inspect the base surface in accordance with national standard GB50212—2002 Code for Construction and Acceptance of Building Anti-Corrosion Engineering.
(3) The base surface shall be solid, flat and dense. No hollowing, sanding, cracks, honeycomb pitting or other defects are allowed.
Check flatness with a 2m straightedge or laser scanner; the allowable deviation shall not exceed ±2mm.
Concrete strength tested by rebound tester shall be no less than 25MPa to ensure the floor delivers optimal physical performance.
(4) Internal and external corners of the base shall be chamfered or rounded.
(5) The base surface must be clean. Remove dust, cement residue and loose parts completely.
Surfaces contaminated by oil, chemicals, eroded loose areas or severely worn sections shall be pretreated (including cleaning and repairing with epoxy mortar) until meeting specifications.
(6) The cured base must be dry. The moisture content within a depth of 20mm shall be no more than 6% (surface appears whitish).
Three moisture testing methods:
Core sampling, then repair the sampling hole with epoxy mortar;
Test with a professional concrete surface moisture meter;
Simple field test: Cover 1㎡ of the base with an airtight sheet. After 4 hours, if no water droplets form under the cover, the base is qualified. If unqualified, adopt heating and drying measures until standard is met.
(7) All pipe casings, reserved holes and embedded parts penetrating the anti-corrosion layer shall be pre-embedded and reinforced with extra coating layers.
(8) Visually inspect the concrete floor for density, no hollowing, no sanding and no oil contamination. Internal and external corners are recommended to be rounded.
(9) Tap the base with a small hammer to check compactness and ensure no hollowing.
(10) Floor flatness shall be inspected with a 2m straightedge and feeler gauge; allowable deviation ≤ 4mm.
(11) Ground floor slabs shall be equipped with a waterproof isolation layer.
(12) Two base treatment methods:
① Grind the surface with chisels, shovels, grinding wheels or floor grinders, then clean thoroughly with soft brushes, compressed air or vacuum cleaners.
② For high-standard projects, adopt sandblasting to form a uniformly rough surface.
Sandblasting shall be operated by dedicated staff with appropriate steel grit size to achieve designed roughness. Clean, maintain and store equipment properly after operation; recycle scattered steel grit on site in a timely manner.
Small oil-stained areas shall be cleaned with acetone or similar solvents until contaminants are removed and solvent fully evaporates, or polished off with grinding tools.
Grind local raised areas; cut V-shaped grooves at cracks with chisels, fill slowly with resin mortar repair material, then compact and grind flat.
(1) Construction ambient temperature: 15～25℃, relative humidity ≤ 80%. If beyond the range, take adjustment measures. Open flame or direct steam heating is prohibited. Record temperature and humidity daily.
(2) Resin, curing agent, thinner and other raw materials shall be hermetically stored in a cool, dry and ventilated area with fire prevention measures in place.
(3) Place professional construction machinery, tools and materials neatly beside the working area with dedicated personnel on duty. Equip the site with chemical fire extinguishers and other fire facilities.
(4) Set up construction signs indicating work content, construction period and curing period; enclose the site with isolation belts.
(1) Construction workers shall thoroughly clean proportioning containers and tools, and keep them designated for use only. Ensure containers and tools stay clean, dry, oil-free and free of cured residue throughout construction.
(2) Weigh epoxy primer resin into the mixing container, record consumption as well as on-site temperature and humidity, and start pre-mixing.
(3) Accurately weigh curing agent per mix ratio and add into the container, record dosage, then keep stirring for at least 3 minutes to ensure uniform mixture.
(4) Pour the mixed material onto the construction area, spread evenly with a trowel; avoid hollowing, bubbles and other defects.
(5) Do not apply topcoat before the primer is fully cured, otherwise wrinkling will occur.
(6) The interval between coats depends on ambient temperature. If interval exceeds 7 days, roughen the primer surface with a soft brush or grinder before topcoating to enhance adhesion.
(7) Cure the primer for at least 12 hours. Confirm full hardening before proceeding to the next process.
(1) Proportion quartz sand as required: No.7 sand : No.9 sand = 8.5 : 1.5, mortar ratio 1 : 1.5～2.0. Weigh epoxy intermediate resin and quartz sand into the mixing barrel and record dosage, then start pre-stirring.
(2) Accurately weigh curing agent per formula ratio, add to the container and record consumption.
(3) Continue stirring for no less than 3 minutes for even mixing.
(4) Spread the mixed mortar evenly over the floor with a trowel.
(5) Note: Mixing with additional materials will change the specific gravity; the laboratory shall provide the coverage rate per unit area. Construction thickness shall comply with design and owner requirements.
(6) Cure the mortar layer for over 24 hours in summer, longer in winter. After natural hardening, perform local trimming, grinding and vacuum cleaning. Keep curing for more than 24 hours after construction.
(1) Topcoat putty repairing: Mix epoxy topcoat resin with No.7 quartz sand at the specified mortar ratio, scrape evenly with a serrated trowel to a thickness of 0.20mm, then roll with a defoaming roller to eliminate air bubbles. Cure for 24 hours, inspect and remove residual surface defects.
(2) Weigh epoxy topcoat resin into the mixing container and start pre-stirring.
(3) Accurately weigh curing agent and auxiliary materials such as color paste in sequence per mix ratio, add into the barrel and record dosage.
(4) Keep stirring for at least 5 minutes to ensure uniform mixing and consistent color tone.
(5) Scrape and spread evenly over the floor with a serrated trowel.
(6) Immediately roll with a defoaming roller after scraping. Allow curing for 48–72 hours before putting into service. Surface waxing is available upon customer request for extra protection.
(7) The finished topcoat shall be flat, smooth, uniform in color and free of blemishes. Rework promptly until qualified if defective.
Note: This is a critical construction stage. Ensure enclosed construction, qualified ambient conditions and stable power supply for lighting and mechanical equipment.
(1) On-site environment: Temperature above 10℃, relative humidity below 85%. Keep doors and windows tightly closed during construction and full curing period; seal gaps and ventilation openings with masking tape to prevent dust intrusion and contamination.
(2) Insects are highly sensitive to colors in summer. Spray insecticide before construction, especially before the coating hardens.
(3) Apply masking tape along construction edges to avoid contamination and ensure straight dividing lines between coated and uncoated areas.
(4) Cross construction is strictly prohibited, including inter-layer cross operation. Unauthorized personnel are forbidden to enter the construction site.
(5) Delivered raw materials shall be stored in places sheltered from wind, rain and direct sunlight, with complete fire safety measures implemented.
Jinfeng Epoxy Flooring has focused on epoxy flooring R&D and construction for 20 years, awarded as one of China’s Top Ten Brands.
With first-class flooring technology and high-quality materials, we deliver premium customized flooring solutions.National Service Hotline: 400-678-1990
Phone
15015150026
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