Sika® Permacor®-3326 EG H
VERY HIGH SOLID EPOXY COATING FOR CONCRETE
Sika® Permacor®-3326 EG H is a low solvent containing 2-pack epoxy protective coating for concrete structures, subjected to chemical attack. The coating has high physical strength, with good abrasion and impact resistance. Suitable to use in hot and tropical climatic conditions.
- High chemical resistance to water, aggressive effluents and waste water and a wide range of chemicals, particularly salt solutions and to acids occurring in biological processes
- High diffusion resistance
- Very good adhesion to mineral surfaces
- Reliable application due to the ability to check for pores in the coating
Usage
Sika® Permacor®-3326 EG H is ideally suited for the corrosion protection of concrete surfaces exposed to various media. The principal use of Sika® Permacor®-3326 EG H is the internal lining of sludge digesters, composting vessels, and process water, waste water, and chemical storage tanks, as well as cooling water pipelines and biogas plants.Advantages
- High chemical resistance to water, aggressive effluents and waste water and a wide range of chemicals, particularly salt solutions and to acids occurring in biological processes
- High diffusion resistance
- Very good adhesion to mineral surfaces
- Reliable application due to the ability to check for pores in the coating
Packaging
Part A + B | 16 kg set |
Colour
Pebble grey approx. RAL 7032 and green approx. DB 601
Product Details
CERTIFICATES AND TEST REPORTS
- Chemical resistance against biogenous sulfuric acid (cat. XWW4/XBSK) acc. DIN 19573 and DIN EN 13529.
- Coating based on epoxy resin for concrete protection according to EN 1504-2, DoP, with CE-mark.
Shelf life
24 months if stored properly in original packaging
Storage conditions
The packaging must be stored properly in original, unopened and undamaged sealed packaging, in dry conditions at temperatures between +5°C and +30°C. Protected from direct sunlight.
Density
~1.9 kg/l
Chemical resistance
Contact Sika® Technical Services for specific information.
Temperature resistance
Dry heat up to approx. +100°C
Application
Mixing ratio
Components A : B
By weight | 100 : 23 |
By volume | 100 : 26 |
Thinner
Sika® Thinner E+B
If necessary, max. 5% Sika® Thinner E+B may be added to adjust the viscosity.
Material temperature
Min. +10°C
Relative air humidity
Max. 85 %
Max. 80 % in containers
Dew point
Beware of condensation!
The substrate must be at least 3°C above dew point to reduce the risk of condensation or blooming on the floor finish.
Note: Low temperatures and high humidity conditions increase the probability of blooming.
Substrate moisture content
Max. 4% (CM-measurment)
Pot Life
At + 20°C | ~90 min |
At + 30°C | ~45 min |
Waiting time to overcoating
Waiting time at + 20°C, for overcoating with itself:
Minimum: | 12 hours |
Maximum: | 48 hours |
In case of longer waiting times the surface must be activated by sweep blasting.
Drying time
Drying time at + 20°C
Touch dry: | After ~4 hours |
Walkable: | After ~12 hours |
Final drying time
Full mechanical and chemical resistance after 7 days at + 20°C.
Consumption
Theoretical material-consumption/coverage without loss for medium dry film thickness of:
Dry film thickness | 250 µm |
Wet film thickness | 330 µm |
Consumption | 0.633 kg/m2 |
Coverage | 1.58 m2/kg |
SUBSTRATE PREPARATION
The concrete surface areas to be coated must meet recognised building standards, i.e. be solid, load-bearing and free from contaminants detrimental to adhesion. Pull-off adhesion strength in accordance with DIN 1048 should be > 1.5 N/mm2 on average with the lowest reading no less than 1.0 N/mm2. For areas subject to heavy mechanical loading, the average value should be > 2.0 N/mm2 and the lowest reading no less than 1.5 N/mm2. Apply suitable compatible undercoats and observe recommended overcoating intervals.
MIXING
Stir component A and B very thoroughly using an electric mixer (start slowly, then increase up to approx. 300 rpm). Add stirred component B carefully and mix both components very thoroughly (including sides and bottom of the container). Mix for at least 3 minutes until a homogeneous mixture is achieved. Fill mixed material into clean container and mix again shortly as described above. During mixing and handling of the materials always wear protective goggles, suitable gloves and other protective clothings.
APPLICATION
The method of application has a major effect on achieving uniform thickness and appearance. Spray application will give the best results. The indicated dry film thickness is easily achieved by airless spray. Adding solvents reduces the sag resistance and the dry film thickness. In case of application by roller or brush, additional applications may become necessary to achieve the required coating thickness, depending on type of construction, site conditions, colour shade etc. Prior to major coating operations a test application on site may be useful to ensure the selected application method will provide the requested results.
By brush or roller:
- Dry film thickness of approx. 150 μm per layer is achievable
- Possibly an additional layer may become necessary to achieve the total dry film thickness
Airless-spraying:
- Efficient airless equipment
- Pressure min. 180 bar
- Remove sieves
- Nozzle size ≥ 0.38 mm (≥ 0.015 inch)
- Spraying angle approx. 50°
- Diameter of hoses min. 10 mm (⅜ inch), hose at spray gun approx. 2 m, min. 6 mm (¼ inch)
- Temperature of material min. + 15°C
CLEANING OF EQUIPMENT
Sika® Permacor®-3326 EG H is a chemical resistant rigid coating product providing good wet scrub resistance. It can be cleaned by washing with soft brushes or high-pressure water jetting, using water with or without mild alkaline detergents.