SikaCor® VEL TH
SikaCor® VEL TH is 2 part, vinyl-ester based coating and lining system with extended pot-life.
- High chemical resistance to acids, leaches, solvents and to oxidising agents
- Applicable on concrete and steel
- Fast curing
- Crack bridging properties as laminate layer
- Accessible
- Excellent bond strength
- Easy application
- For internal and external use
- Coloured Top coat available, details refers SikaCor® VE Solution grey
Usage
- Especially designed for the use in a chemically stressed environment,where a high chemical resistance is mandatory
- Internal and external lining of chemical tanks
- Secondary containment lining in bund area
- Binder for GFR Laminate systems
- Lining of gutters in process and storage area
Advantages
- High chemical resistance to acids, leaches, solvents and to oxidising agents
- Applicable on concrete and steel
- Fast curing
- Crack bridging properties as laminate layer
- Accessible
- Excellent bond strength
- Easy application
- For internal and external use
- Coloured Top coat available, details refers SikaCor® VE Solution grey
Packaging
| SikaCor® VE solution TH | 25 kg / drum |
| SikaCor® VE hardener | 1 kg / containers |
| SikaCor® powder fine grey | 25 kg / bag |
Colour
| SikaCor® VE solution TH | Transparent |
| SikaCor® VE hardener | Opaque |
| SikaCor® powder fine grey | Grey |
Product Details
Composition
Formulated Vinylester Resin + Organic Peroxide
Shelf life
| SikaCor® VE solution TH | 6 months |
| SikaCor® VE hardener | 6 months |
| SikaCor® powder fine grey | 24 months |
from date of production if stored properly in original, unopened and undamaged sealed packaging.
Storage conditions
Store in dry conditions at temperature between +5°C and +23°C. Protect from frost.
Density
| SikaCor® VE solution TH | ~ 1.10 kg/L |
| SikaCor® VE hardener | ~ 1.10 kg/L |
| SikaCor® powder fine grey | ~ 1.40 kg/L (Bulk density) |
Shore Hardness
| Shore D Hardness : Approx. 80 (14 days / +23°C) | (DIN EN ISO 868) |
Tensile Strength
| Approx. 70 N/mm2 | (ISO 527) |
Tensile Adhesion Strength
| > 1.5 N/mm2 (failure in concrete) | (EN 4624) |
Chemical Resistance
According to test groups 1, 1a, 2, 3, 3a, 3b, 4, 4a, 4b, 4c, 5, 5a, 5b, 6, 6b, 7, 7a, 7b, 8, 9, 9a, 10, 11, 12, 13, 14, 15 und 15a
| Hydrochloric acid | ≤ 37% |
| Sulphuric acid | ≤ 70% |
| Nitric acid | ≤ 30% |
| Aqueous sodium hypochlorite | 12 % active chlorine |
| Hydrogen peroxide | ≤ 30% |
| Chromic acid | ≤ 20% |
*Resistant to a wide range of chemicals, please ask for detailed chemical resistance list SikaCor® VEL TH.
Temperature Resistance
| Exposure | Temperature |
| Permanent | +60°C |
| Short-term max. 7 d | +80°C |
| Short-term max. 12 h | +100°C |
*Short-term moist/wet heat* up to +100°C, where exposure is only occasional (steam cleaning etc.).
Application
Ambient Air Temperature
+5°C min. / +35°C max.
Relative Air Humidity
80% r.h. max.
Dew Point
Beware of condensation!
The substrate and uncured floor must be at least 3°C above the dew point to reduce the risk of condensation or blooming on the floor finish.
Substrate Temperature
+5°C min. / +35°C max.
Substrate Moisture Content
< 4% pbw moisture content.
Test method: Sika®-Tramex meter, CM - measurement or Oven-drymethod.
No rising moisture according to ASTM (Polyethylene-sheet).
Consumption
SikaCor® VEL TH, High Build Lining System (Not Crack Bridging)
| Coating System | Product | Consumption |
| Primer | 100 pbw SikaCor® VE Solution TH 1.5 ppw SikaCor® VE Hardener | ~ 0.3-0.4 kg/m2 (mixed) |
| 1st coat (Scratch Coat) | 100 ppw SikaCor® VE Solution TH | ~ 0.4 kg/m2 (mixed) |
| 1st coat (Scratch Coat) | 1.5 ppw SikaCor® VE Hardener | ~ 0.8 kg/m2 |
| 2nd coat (Top Coat self smoothening) | 100 ppw SikaCor® VE Solution TH | ~ 0.4 kg/m2 (mixed) |
| 2nd coat (Top Coat self smoothening) | 1.5 ppw SikaCor® VE Hardener + 100 pbw SikaCor® Power fine grey | ~ 0.4 kg/m2 |
SikaCor® VEL TH, Standard system
| Coating System | Product | Consumption |
| Primer or Levelling mortar | 100 pbw SikaCor® VE solution TH | ~ 0.55 kg/m² |
| Primer or Levelling mortar | 1.5 ppw SikaCor® VE hardener | ~ 0.01 kg/m² |
| Primer or Levelling mortar | 100-200 pbw SikaCor® powder fine grey | ~ 0.55-1.10 kg/m² |
| Laminate layer | 100 ppw SikaCor® VE solution TH 1.5 ppw SikaCor® VE hardener | ~ 1.8 kg/m² (mixed) |
| Surface matt | Surface matt (30 g/m²) 100 ppw SikaCor® VE solution TH 1.5 ppw SikaCor® VE hardener | ~ 0.2 kg/m² (mixed) |
SikaCor® VEL TH, Economical system
| Coating System | Product | Consumption |
| Primer or Levelling mortar | 100 pbw SikaCor® VE solution TH | ~ 0.55 kg/m² |
| Primer or Levelling mortar | 1.5 ppw SikaCor® VE hardener | ~ 0.01 kg/m² |
| Primer or Levelling mortar | 100-200 pbw SikaCor® powder fine grey | ~ 0.55-1.10 kg/m² |
| Laminate layer | 100 ppw SikaCor® VE solution TH 1.5 ppw SikaCor® VE hardener Vetrotex M123 (1 x 300 g/m²) | ~ 0.9 kg/m² (mixed) |
| Surface matt | Surface matt (30 g/m²) 100 ppw SikaCor® VE solution TH 1.5 ppw SikaCor® VE hardener | ~ 0.2 kg/m² (mixed) |
SikaCor® VEL TH, Heavy duty system
| Coating System | Product | Consumption |
| Primer or Levelling mortar | 100 pbw SikaCor® VE solution TH | ~ 0.55 kg/m² |
| Primer or Levelling mortar | 1.5 ppw SikaCor® VE hardener | ~ 0.01 kg/m² |
| Primer or Levelling mortar | 100-200 pbw SikaCor® powder fine grey | ~ 0.55-1.10 kg/m² |
| Laminate layer | 100 ppw SikaCor® VE solution TH 1.5 ppw SikaCor® VE hardener Vetrotex M123 (2 x 450 g/m²) | ~ 2.5 kg/m² (mixed) |
| Surface matt | Surface matt (30 g/m²) 100 ppw SikaCor® VE solution TH 1.5 ppw SikaCor® VE hardener | ~ 0.2 kg/m² (mixed) |
Anti-slip top coat (optional)
| Coating System | Product | Consumption |
| 1st Top coat | 100 ppw SikaCor® VE solution TH 1.0 ppw SikaCor® VE hardener | ~ 0.20 kg/m² |
| Broadcast | Silicuimcarbide (0.5mm) | ~ 0.50 kg/m² |
| 2nd Top coat | 100 ppw SikaCor® VE solution TH 1.0 ppw SikaCor® VE hardener | ~ 0.20 kg/m² |
Notes:
- In case SikaCor® VE TH is applied as primer SikaCor® powder fine grey does not have to be added
- These figures are theoretical and do allow for additional material required due to surface porosity,surface profile,variations in level, wastage.
- Vetrotex M123 is the recommended glass fabric.However equivalent alternative glass fabrics can be used.Please refer to your Sika partner for advise.
- The amount of SikaCor® VE hardener can be reduced to 1% in case of application temperature above 30 °C
EQUIPMENT
SikaCor® VEL TH must be thoroughly mixed using a low speed electric stirrer (300 - 400 rpm) or other suitable equipment.
SUBSTRATE PREPARATION
Substrates must be sound and of sufficient compressive strength (minimum 25 N/mm2) with a minimum pull off strength of 1.5 N/mm2. The substrate must be clean, dry and free of all contaminants such as dirt, oil, grease, coatings and surface treatments, etc.If in doubt, apply a test area first.
Concrete
Substrates must be prepared mechanically using abrasive blast cleaning or scarifying equipment to remove cement laitance and achieve an open textured surface.
Weak concrete must be removed and surface defects such as blowholes and voids must be fully exposed.
Repairs to the substrate, filling of blowholes/voids and surface levelling must be carried out using appropriate products from the Sikafloor® , Sikagard® Sikadur® or Sika® MonoTop® range of materials.
The concrete or screed substrate has to be primed or levelled in order to achieve an even surface.High spots must be removed by e.g.grinding.
All dust, loose and friable material must be completely removed from all surfaces before application of the product, preferably by brush and/or vacuum.
Steel
Surfaces must be prepared mechanically using abrasive blast cleaning.The level SSPC-SP 10 “near white metal blast cleaned” or level Sa 2 ½ according to ISO EN 12944-4 has to be achieved. Welds and joints have to be prepared according to EN 14879, part 1.
After blast cleaning remove all dust dirt and blasting material. In order to maintain the surface conditions after blast cleaning air-conditioning is recommended.
MIXING
Mixing
| Levelling mortar | Part A : part B 100 : 1.5 : 100-200 (by weight) |
| Laminate layer and top coat | Part A : part B 100 : 1.0 - 1.5 (by weight) |
Mixing Time
Levelling mortar: Prior to mixing, stir part A mechanically. When all of part B has been added to part A, mix continuously for 1–2 minutes until a uniform mix has been achieved. Add, while stirring slowly the total amount of SikaCor® VEL powder
Laminate layer and top coat: Prior to mixing, stir part A mechanically. When all of part B has been added to part A, mix continuously for 1–2 minutes until a uniform mix has been achieved.Over mixing must be avoided to minimise air entrainment.
APPLICATION
Prior to application, confirm substrate moisture content, relative humidity and dew point.
If > 4% pbw moisture content, substrate has to be dried or Sikagard® 75 EpoCem has to be used as TMB (temporary moisture barrier).
Levelling mortar
Rough surfaces need to be levelled first. Apply the levelling mortar by squeegee/trowel to the required thickness.
Laminate layer
Apply the first layer of SikaCor® VE TH by roller, imbed the glass fabric, apply the second and the third layer in the same way, wet in wet. After application of the final glass fabric de-aerate with a disc roller.
CLEANING OF EQUIPMENT
Clean all tools and application equipment with acetone immediately after use.Hardened and/or cured material can only be removed mechanically.
Attention: Acetone is a flammable liquid, please handle with care, use all equipment for your personal protection required.