Fischer GeoFlow

Fischer GeoFlow was developed especially for the grouting of geothermal probes, but also sealing and filling work in well and civil engineering. The product has a particularly high yield and reduces borehole resistance. The material is also suitable for sites with sulphate-aggressive groundwaters.

The great processability of Fischer GeoFlow faciliates the grouting on site. The grout can be mixed in all commercially available mixers with the addition of clean water to a pumpable suspension. Fischer Spezialbaustoffe GmbH recommends for the mixing of grouting material for geothermal probes the mixer and injection plant MAT IEC 40.

Fischer GeoFlow complies with the current recommendations VDI Guidelines (VDI 4640, Part 2).

  • Especially economical
    Efficient use of materials due to high yield

  • Effective thermal conductivity
    Enhanced thermal performance with an effective thermal conductivity of 2,0 W/mK

  • Accordance to VDI 4640
    Thermal use of the underground, part 2

  • Very easy to process
    High product quality makes construction site work easier

  • For sulphate bearing ground waters
    especially designed for geothermal drilling in sulphate bearing ground waters

  • Good freeze-thaw stability
    according DIN EN 12371:2010-07

Specifications

Application areaFischer GeoFlow was developed especially for the grouting of geo thermal probes, but also sealing and filling work in well and civil engineering. The product has a particularly high yield and reduces borehole resistance. The material is also suit able for sites with sulphate-aggressive groundwaters.
Appropriate use areaMay be used in any surface.
Formulation/Processing16,0 l water: 25 kg Fischer GeoFlow with high-speed mixing plants. Please keep the
formulation and continue uninterrupted with processing after mixing the premixed
dry mortar with water.
Water-binder-ratio0,6
Processing timeAfter mixing, process quickly, within 30 minutes max.
Processing temperatureProcessible from +5 °C to max. +25 °C
Consumption1020 kg Fischer GeoFlow per meter cubed (m³)
Amount985 l/t
Marsh tunnel timeLaboratory value: 68 sec. (outlet diameter 4,76 mm, may vary depending on the mixing
technique.)
Suspension densityLaboratory value: 1.6 kg / dm³; Site value: ≥ 1.58 kg / dm³
Suspension temperaturelaboratory value: 20 ° C; Site value: 5 - 25 °C
Depreciationlaboratory value: < 1.5 % after one hour, 1.5 % after 24 hours;
Site value: < 2.0 % after one hour
Effective thermal conductivity2,0 W/mK, measured using the Geothermal Response Test
Compressive strength (after 1/2/3/4/7/28 days)
0,2 / 0,6 / 0,9 / 1,4 / 2,4 / 6,2 MPa,
compressive strength of at least 1 MPa is reached after 3.5 days.
Permeability kf< 10⁻¹⁰ m/s (Coeffcient of permeability, in accordance with Guideline DIN 18130)
Environmental compatibilityYes, the certificate is available and can be requested at any time.
Frost-thaw resistanceDIN 12371:2010-07
Sulfate resistanceSulfate resistance test certificate is currently being processed.
Resistance to limedissolving
carbonic acid
Yes, the certificate is available and can be requested at any time.
Tools/EquipmentFischer GeoFlow can be mixed to a free-flowing suspension by adding water. The
mixing time depends on the mixing system. Fischer GeoFlow best processed and
homogenized in a colloidal mixer.
StorageIf stored correctly (dry, on pallets) and in original packaging, the material can be kept for at least 6 months.
Delivery25 kg bags / 40 bags on Europallet + Big Bags
Safety instructionsThe product contains cement and reacts with humidity / water, therefore protection
of skin and eyes is needed. After skin contact wash immediately with plenty of water. In the event of contact with the eyes immediately rinse thouroughly with water and consult a doctor. This product is exempt from the specific labelling requirements of Ordinance of Hazardous Substances. Please observe also EC safety data sheet for the product Fischer GeoFlow.
DisclaimerThe above data (except effective thermal conductivity) relate to tests under laboratory conditions with the usual metrological tolerances. The testing was done to obtain information about the basic suitability of our product in respect of the intended
purpose. The given information is without obligation and therefore does not release customers from the obligation to carry out their own specific tests. We assume no responsibility for the absence of features and / or properties. There is no claim for damages.

Frequently Asked Questions (FAQ) for compression

more questions