Fischer GeoSecure

Fischer GeoSecure provides a control measurement to annular space tilling at any time and was especially designed for the grouting of borehole heat exchangers in sulphate-bearing groundwater.
Fischer GeoSecure incorporates all favourable characteristics in one product. It can be used for all kind of grouting and soil solidifcation.

The thermal conductivity of more than 2,40 W/mK ensures a thermally optimum connection of the probe to the soil/rock and enables a sustainable efficiency of the whole geothermal installation.

The great processability of Fischer GeoSecure 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 GeoSecure complies with the current recommendations VDI Guidelines (VDI 4640, Part 2)

  • Control measurement to annular
    space tilling, possilbe at any time

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

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

  • Rarely reinjection necessary
    efficient and economic grouting

  • Great freeze-thaw-stability
    according to DIN CEN/ TS 12390-9

  • Very high thermal conductivity
    enhanced thermal performance with a thermal conductivity ≥ 2,40 W/mK

  • Seawater / dissolved CO2 resistance
    resistant to seawater and dissolved
    carbon dioxide (CO2)

Specifications

Application areaFischer GeoSecure was especially designed for the grouting of borehole heat exchangers in sulphate-bearing groundwater and incorporates all favourable characteristics in one product. It can be used for all kind of grouting and soil solidifcation.
Appropriate use areaMay be used in any surface.
Formulation/Processing

6,25 l water: 25 kg Fischer GeoSecure with compulsory mixers and accordingly
10,0 l water: 25 kg Fischer GeoSecure with colloidal mixers.
Please keep the formulation and continue uninterrupted with processing after mixing the premixed dry mortar with water.

Processing timeAfter mixing process quickly.
Processing temperatureProcessible from +5 °C to max. +25 °C
Consumption1520 kg Fischer GeoSecure per meter cubed (m³)
Yield720 l/t
Flow diameter215 mm (in accordance with DIN EN 12350-5)
Marsh tunnel time71 sec.
Suspension density~ 1,9 kg/dm³
Thermal conductivity≥ 2,40 W/mK (cured sample of Fischer GeoSecure)
Compressive strength> 10,0 N/mm²
Permeability kf< 10-9 m/s (Coeffcient of permeability, in accordance with guideline DIN 18130)
Tools/EquipmentFischer GeoSecure can be mixed to a free-flowing suspension by adding water. The mixing time depends on the
mixing system. Fischer GeoSecure is 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 4 months.
Delivery25 kg bags /42 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 GeoSolid® 240HS.
DisclaimerThe above data 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 responsability for the absence of features and/or properties. There is no claim for damages.

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