Winter concrete TB S 30
Product description
Fescon Winter Concrete is a special concrete that enables successful casting during winter at temperatures as low as -15°C.
- Strength class C 25/30
- Frost-resistant
- Good workability
- No chlorides
Applications
- Horizontal grouting of elements
The product is listed in the portal for building products that can be used in Nordic Swan Ecolabelled buildings.
Vinkki! Vieritä taulukkoa sivuttain
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6416841530042
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WINTER CONCRETE TB S 30
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53004
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25 kg
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6416841330048
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WINTER CONCRETE TB S 30
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33004
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1000 kg
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Base
The base must be undamaged and clean. Snow and ice must be melted away from the base. If necessary, also remove the weak-strength cement paste layer. Best adhesion can be achieved to a rough base. When using galvanised steels, you must make absolutely sure that the coating has become passive.
Mixing
Refer to the bag for how much water the concrete requires. Add the dry material to the water and mix with a concrete mixer for around ten minutes. With a power mixer, around one to three minutes of mixing is sufficient. Let the mass stand for a while and mix it again for a short while. Find the correct consistency at this stage by gradually adding the rest of the water. We do not recommend adding all of the water right at the start. If you are unable to use the concrete immediately after mixing, we recommend mixing it again before casting. The finished concrete remains workable for around half an hour.
Work instructions
Casting should be done as soon as possible after mixing. If necessary, vibrate the casting lightly or ram it. Recommended casting layer thickness 15-100 mm. Follow the instructions of the designers and the official regulations on winter concreting when doing casting work.
After treatment
The fresh casting must be protected from snow and rain. Strength development continues without additional heating in temperatures above -15°C.
Waste handling
Storage and handling of waste. See the separate storage and disposal instructions https://www.fescon.fi/en/material-bank
| Water requirement |
2.4 - 3.0 l / 25 kg of dry product |
| Finished compound |
11 - 12 l / 25 kg of dry product |
| Composition |
Portland cement, natural sand (max. grain size 3.0 mm), additives that improve workability and ensure strength development in freezing temperatures. |
| Maximum grain size |
3 mm (the shape of natural stones may vary) |
| Package size |
25 kg and 1000 kg |
| Lowest usage temperature |
- 15°C |
| Workability time |
approx. 0.5 h |
| Strength class |
C 25/30 |
| Strength development |
1 day at +20°C approx. 20 MPa
7 days at +20°C approx. 30 MPa
28 days at +20°C approx. 40 MPa
7 days at -15°C + 7 days at +20°C approx. 25 MPa
7 days at -15°C + 28 days at +20°C approx. 35 MPa |
| Exposure class |
XC 2, XF 1 (100 years) |
| Flow/plasticity |
approx. 140 mm |
The information is based on tests and practical experience. We cannot affect conditions at the work site so we cannot assume responsibility for the end result affected by local conditions.