SikaGrout®-3200 CN
Fatigue certified onshore steel wind tower precision grout
SikaGrout®-3200 CN is a 1-part, cementitious, fast hardening, free flowing grout. It is specifically designed for onshore steel wind towers.
- Fast early strength development
- High final strength
- Fluid consistency
- Suitable for pumping
- Shrinkage compensated
- Application thickness 10–150 mm
- Application temperature range +5 °C to +35°C
- High adhesion to concrete
Usage
- High performance precision grouting of vertical or horizontal joints and under grouting base plates
Advantages
- Fast early strength development
- High final strength
- Fluid consistency
- Suitable for pumping
- Shrinkage compensated
- Application thickness 10–150 mm
- Application temperature range +5 °C to +35°C
- High adhesion to concrete
Packaging
25 kg bag
Refer to current price list for packaging variations
Colour
Grey powder
Product Details
APPROVALS / STANDARDS
- Meets the requirements of standard: GB/ T 50448-2015 (Type II)
- Fatigue Resistance SikaGrout®-3200 CN, Applus, Certificate No. 17/32301620-S
- Initial test according to DAfStb guideline "Production and use of cement-bound grouting concrete and grouting mortar" SikaGrout®-3200 CN, MPA Hannover Test Report No. 183447
Chemical base
Cement, selected fillers and aggregates, special additives
Shelf life
6 months from date of production
Storage conditions
The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.
Maximum Grain Size
Dmax: ~3 mm
Soluble Chloride Ion Content
| ≤ 0,1% | (GB/T50448-2015) |
Compressive Strength
| 1 day | ≥ 55 N/mm2 |
| 3 days | ≥ 80 N/mm2 |
| 28 days | ≥ 100 N/mm2 |
Modulus of Elasticity in Compression
| ~38'000 N/mm2 | (GB/T50081-2002) |
Expansion
Vertical expansion:
| After 3 hours | ~0,1–3,5 % |
| Difference between 3 hours and 24 hours | ~0,02–0,5 % |
Bleeding
| 0 % | (GB/T50448-2015) |
Application
Mixing ratio
~11,5 %
2,875 l of water for 25 kg of powder
Fresh Mortar Density
~2,3 kg/l
Layer Thickness
10 mm min./ 150 mm max.
Flowability
| Initial | 30 minutes retained |
| ≥ 340 mm | ≥ 310 mm |
Ambient Air Temperature
+5 °C min. / +35 °C max.
Substrate Temperature
+5 °C min. / +35 °C max.
Pot Life
~60 minutes at +20 °C
Yield
25 kg of powder yields ~12,1 litres of grout
MIXING
Drill and Spiral Mixer
Pour the correct amount of water into a suitable clean mixing container. While stirring slowly with drill and spiral mixer ( 200–500 rpm), add the complete bag of powder into the water. Mix continuously for 3 minutes to achieve a uniform and lump free smooth consistency. Do not add more water than the maximum specified. Wait for 1-2 minutes to allow the entrapped air to escape and then mix again for 2 more minutes.
Grout mixer
SikaGrout®-3200 CN must be mixed using suitable grout mixing equipment combined with agitator for continuous large volume mixing. Volume capacity of equipment should be applicable to the volume of material being mixed for a continuous operation. Equipment trials should be considered to ensure product can be mixed satisfactory.
Pour the minimum water ratio in the correct proportion into the grout mixer. While stirring the water, slowly add the powder to the water. Add more water within the mixing time up to the maximum allowed until the desired consistency is achieved.
Mix continuously for a minimum of 3 minutes. For larger mixes the mixing time must be extended to approximately 5 minutes or as necessary until the grout achieves a lump free smooth consistency. Do not add more water than the maximum specified.
APPLICATION
Strictly follow installation procedures as defined in method statements, application manuals and working instructions which must always be adjusted to the actual site conditions.
Pre-wetting
The prepared concrete substrate must be thoroughly saturated with clean water for a recommended 12 hours before application of the grout. The surface must not be allowed to dry within this time. Prior to application of the grout, all water must be removed from within formwork, cavities or pockets and the final surface must achieve a dark matt appearance (saturated surface dry) without glistening.
Placing
Apply the material shortly after mixing to take advantage of the expansion properties. Immediately after mixing for manual application, pour the mixed grout into the header box or hopper ensuring continuous grout flow during the complete grouting operation to avoid trapping air.
For large volume placement, grout pumps are recommended. Equipment trials should be considered to ensure product can be pumped satisfactory.
Surface finishing
Finish exposed grout surfaces to the required surface texture as soon as the grout has started to stiffen. Do not add additional water on the surface. Do not over work surface as this may cause surface discolouration and cracking. After the grout has initially hardened, remove formwork and trim edges while concrete is ‘green’.
Cold weather working
Consider storing bags in a warm environment and using warm water to assist with achieving strength gain and maintaining physical properties.
Hot weather working
Consider storing bags in a cool environment and using cold water to assist with controlling the exothermic reaction to reduce cracking and maintaining physical properties.
CURING TREATMENT
Protect exposed grout surfaces after finishing from premature drying and cracking using an appropriate curing method e.g. curing compound, moist geo-textile membrane, hessian, polythene sheet etc. In cold weather apply insulated blankets to maintain a constant temperature to prevent surface damage from freezing and frost.
CLEANING OF TOOLS
Clean all tools and application equipment with water immediately after use. Hardened material can only be mechanically removed.