SikaCor®-950 F
HEAVY DUTY COATING FOR STEEL AND CONCRETE
Resistant 2-pack coating of low solvent content based on epoxy with mineral fillers.
Low solvent content according to Protective Coatings Directive of German Paint Industry Association
(VdL-RL 04).
▪ Tough hard, heavy duty
▪ Abrasion and impact resistant
▪ Excellent resistance to water and chemicals
Usage
Protective coating for concrete and steel, for buried and submerged structures for hydraulic engineering constructions and as internal coating for tanks and reservoirs, e.g. sewage treatment, agricultural and chemical industries etc. Also suitable where application onto damp concrete is inevitable.SikaCor®-950 F can be exposed to water immediately after application. But take into consideration that solvents get into the water which leads to temporary contamination. Immediate exposure to water should therefore only be considered in special cases and after consulting the authorities for the protection of environment.
Not suitable for surfaces in contact with drinking water.
Advantages
After complete curing SikaCor®-950 F is:▪ Tough hard, heavy duty
▪ Abrasion and impact resistant
▪ Excellent resistance to water and chemicals
Packaging
SikaCor®-950 F | 35 kg and 15 kg net. |
Sika® Thinner S | 25 l, 10 l and 3 l |
SikaCor® Cleaner | 160 l and 25 l |
Colour
Black, tinted red
Product Details
APPROVALS / CERTIFICATES
In Process:
- CE-marking as coating based on epoxy resin for concrete protection according to EN 1504-2.
Shelf life
2 years
Storage conditions
In originally sealed containers in a cool and dry environment.
Density
~1.9 kg/l
Solid content
~75 % by volume
~88 % by weight
Chemical resistance
Resistant to freshwater, process water, brackish water, seawater, domestic sewage, faeces, diluted inorganic acids and lyes, neutral salts, mineral and fuel oils, grease, detergents etc.
Industrial wastewater upon request, based on wastewater analysis.
Not resistant to exposure to benzene-hydrocarbons and tar oil.
Temperature resistance
Dry heat up to approx. + 100°C
Warm water up to approx. + 60°C
Not resistant to warm water at significant differential of temperature gradient!
Application
Mixing ratio
Components A : B |
By weight | 93 : 7 |
By volume | 100 : 14 |
Thinner
Sika® Thinner S, only thin material where stated.
If necessary max. 5 % Sika® Thinner S may be added to adapt the viscosity.
In this case an immediate exposure to water is not possible.
Product temperature
Min. + 10°C
Relative air humidity
Max. 85 %, except the surface temperature is significantly higher than the dew point temperature, it shall be at least 3 K above dew point.
Under unfavourable conditions, e.g. influence of high air humidity into the fresh coating, surface damages and possibly little alligatoring may occur. However, this will not affect the quality.
Surface temperature
Min. + 10°C
Pot Life
At + 20°C | 1,5 h |
At + 30°C | 45 min. |
Waiting time to overcoating
Waiting time between operations up to max. 150 μm dry film thickness:
Waiting time | Waiting time max. | |
At + 10°C after | 30 h | 72 h |
At + 15°C after | 24 h | 60 h |
At + 20°C after | 12 h | 48 h |
At + 25°C after | 8 h | 36 h |
At + 30°C after | 6 h | 24 h |
If these maximum waiting times cannot be observed, the surface must be activated by sweep blasting to avoid intercoat adhesion problems.
Prior to application of the next coat a thorough dedusting is necessary.
Between SikaCor® Zinc R and SikaCor®-950® F: 24 h at + 20°C (see product data sheet).
Drying time
Drying Time at + 20°C:
Dry to touch after ~4 h, dry to handle after ~12 h
Final drying time
At + 20°C and good ventilation final curing is achieved after approx. 7 days.
Curing also takes place at lower temperatures – below + 10°C – but it takes longer.
Consumption
Theoretical material-consumption/coverage without loss for medium dry film thickness of:
Dry film thickness | 150 µm |
Wet film thickness | 200 µm |
Consumption | 0.380 kg/m² |
Coverage | 2.63 m²/kg |
SUBSTRATE PREPARATION
Concrete:
Solid and gripping, free of cement laitance, dust, loose and friable particles and other contamination. Concrete moisture content max. 6 %. Sweep blasting increases adhesion. This is particularly important in case of underwater exposure. Large holes, holidays and cavities etc. should be levelled up with e.g. Icoment®- 520 Mortar.
SURFACE PREPARATION
Steel:
Blast-cleaning to Sa 2 ½ according to ISO 12944-4.
Free from dirt, oil and grease.
Average roughness depth RZ ≥ 50 μm.
MIXING
Stir component A very thoroughly using an electric mixer (start slowly, then increase up to approx. 300 rpm). Add component B carefully and mix both com- ponents very thoroughly (including sides and bottom of the container). Mix for at least 3 minutes until a ho- mogeneous mixture is achieved. Fill mixed material in- to clean container and mix again shortly as described above. During mixing and handling of the materials al- ways 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 ap plication 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 and roller
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)
▪ Temperature of material min. + 15°C
CLEANING OF EQUIPMENT
SikaCor® Cleaner