Sikagard®-680 S Betoncolor
Sikagard®-680 S Betoncolor is a one-component solvent containing coating, based on methacrylic resins resistant to weathering, alkalis and ageing. It is available in clear and coloured grades for use on mineral substrates including concrete and other cementitious surfaces.
Sikagard®-680 S Betoncolor protects concrete against aggressive atmospheric influences and promotes a self-cleaning effect on the treated surfaces. It does not adversely influence the characteristic texture of the concrete.
Sikagard®-680 S Betoncolor complies with the requirements of EN 1504-2 as a protective coating.
- Sikagard®-680 S Betoncolor provides excellent weather resistance and is based on a methacrylic resin with fast evaporating solvents
- Due to its quick drying properties, the coating is rain resistant within a short time
- Almost no change in the texture characteristics of the concrete surface
- Sikagard®-680 S Betoncolor protects the concrete against aggressive atmospheric influences, which can penetrate into the concrete in the form of salts or gases
- Very high diffusion resistance against carbon dioxide and, therefore reduces considerably the rate and depth of carbonation of the concrete
- Water vapour permeability is not adversely affected
- Dirt pick up is reduced and the concrete is no longer discoloured by rain
- Suitable for sealing of green concrete in civil engineering works
Areas of Application
Sikagard®-680 S Betoncolor is used for protection and enhancement of concrete and other cementitious materials on building and infrastructures elements.Sikagard®-680 S Betoncolor clear glaze is a colourless material drying to a glossy coat, suitable as refresher and protective coating for exposed aggregate concrete.
Sikagard®-680 S Betoncolor top coat is a top coating, drying to a mat finish, available in a large number of decorative standard and almost unlimited special colour shades.
- Suitable for protection against ingress (Principle 1, method 1.3 of EN 1504-9),
- Suitable for moisture control (Principle 2, method 2.3 of EN 1504-9)
- Suitable for increasing the resistivity (Principle 8, method 8.3 of EN 1504-9)
Advantages
- Sikagard®-680 S Betoncolor provides excellent weather resistance and is based on a methacrylic resin with fast evaporating solvents
- Due to its quick drying properties, the coating is rain resistant within a short time
- Almost no change in the texture characteristics of the concrete surface
- Sikagard®-680 S Betoncolor protects the concrete against aggressive atmospheric influences, which can penetrate into the concrete in the form of salts or gases
- Very high diffusion resistance against carbon dioxide and, therefore reduces considerably the rate and depth of carbonation of the concrete
- Water vapour permeability is not adversely affected
- Dirt pick up is reduced and the concrete is no longer discoloured by rain
- Suitable for sealing of green concrete in civil engineering works
Packaging
| Clear Glaze | 20 kg pail |
| Top Coat | 12.5 and 30 kg pail |
Color
| Clear Glaze | Clear liquid |
| Top Coat | Thixotropic past available in almost any colour shade |
Product Details
APPROVALS / CERTIFICATES
- Report Nr.:A 2216/C1 dated 22. 11. 1990, IBAC Aachen
- Report Nr.:A 3026/B2 dated 14. 06. 1996, IBAC Aachen
- Report Nr.:P 3132-1 dated 27. 08. 2003, Polymer Institute
- This system is registered as product a system according to ZTV-ING part 3, section 4
- Coating for surface protection of concrete according to EN 1504-2:2004, Declaration of Performance 02 03 03 02 001 0 000001 2017, certified by notified factory production control certification body 0921, certificate of conformity of the factory production control 0921-BPR-2017, and provided with the CE marking.
Composition
Acrylate resin in solvent
Shelf life
36 months from date of production if stored properly in undamaged and unopened original sealed packaging.
Storage conditions
Store in cool and dry conditions. Protect from direct sunlight and frost.
Density
| Clear Glaze | ~0.9 kg/l (at +20 °C) |
| Top Coat | ~1.4 kg/l (at +20 °C) |
Dependent on colour shade, small variations are possible.
Flash point
| Clear Glaze | +25 °C |
| Top Coat | +30 °C |
Solid content by volume
| Top Coat: | ~45 % |
System structure
Sikagard®-680 S Betoncolor Clear Glaze
| As protection and enhancement of exposed aggregate concrete | 2 x Sikagard®-680 S Betoncolor Clear Glaze |
Sikagard®-680 S Betoncolor Top Coat
| In normal situation | 2 x Sikagard®-680 S Betoncolor Top Coat |
| When using bright yellow and red colour shades | 3 x Sikagard®-680 S Betoncolor Top coat |
| When combined with hydrophobic impregnation priming coats | 1 - 2 x Sikagard®-702 W or Sikagard®-700 S 2 x Sikagard®-680 S BetoncolorTop Coat |
Diffusion resistance to water vapour
| Dry film thickness | d = 140 µm |
| Equivalent air layer thickness | SD, H2O = 2.4 m |
| Diffusion coefficient H2O | µH2O = 1.8 × 104 |
| Requirement for breathability | SD, H2O ≤ 5 m |
Carbonation resistance
| Dry film thickness | d = 130 µm |
| Equivalent air layer thickness | SD, CO2 = 429 m |
| Diffusion coefficient CO2 | µCO2 = 3.3 × 106 |
| Requirement for carbonation resistance | SD, CO2 ≥ 50 m |
Application
Layer thickness
Minimum required dry thickness to achieve full durability characteristics (CO2 diffusion, adhesion after thermal cycling, etc.) = 101 μm.
Maximum thickness not to go beyond the H2O equivalent air thickness of 5 m = 290 μm.
Ambient air temperature
+5 °C min. / +35 °C max.
Relative air humidity
< 85 %
Dew point
Substrate and ambient temperature must be at least 3 °C above dew point.Substrate temperature
+5 °C min. / +35 °C max.
Waiting time to overcoating
Waiting time between coating:
| Temperature | Time |
+10 °C | 8 hours |
| +20 °C | 5 hours |
+30 °C | 3 hours |
Note: Refresher coats of Sikagard®-680 S Betoncolor can be applied without priming if the existing coating has been thoroughly cleaned.
Curing treatment
Sikagard®-680 S Betoncolor does not require any special curing but must be protected from rain for at least 1 hour at +20 °C (dust dry in 30 minutes at +20 °C).
Applied product ready for use
Full cure: ~5 days at +20 °C
Consumption
Approx. consumption per application kg/m2 per coat
| Product | Per Coat |
Sikagard®-680 S Betoncolor Clear Glaze | ~ 0.15 kg/m2 |
Sikagard®-680 S Betoncolor Top Coat | ~ 0.20 kg/m2 |
APPLICATION
Sikagard®-680 S Betoncolor is supplied ready for use. Stir thoroughly prior to application.
On very absorbent and/or porous substrate, it is recommended to add about 50% of Sikagard®-680 S Betoncolor Clear Glaze to the first coat of Sikagard®-680 S Betoncolorr Top Coat in order to strengthen the substrate and to reduce the risk of a patchy appearance.
Sikagard®-680 S Betoncolor (Clear Glaze and Top Coat) can be applied by brush or short-piled lambskin roller.
The top coat can also be applied by airless spray:
Spray pressure 150 bars, nozzle bore 0.38–0.66 mm, spray angle 50–80°.
CLEANING OF EQUIPMENT
Clean all tools and application equipment with Sika Thinner C immediately after use. Hardened / cured material can only be removed mechanically.