Very efficient grouting material with effective thermal conductivity for geothermal probes, wells and civil engineering
|Application area||Fischer 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 area||May be used in any surface.|
|Formulation/Processing||16,0 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.
|Processing time||After mixing, process quickly, within 30 minutes max.|
|Processing temperature||Processible from +5 °C to max. +25 °C|
|Consumption||1020 kg Fischer GeoFlow per meter cubed (m³)|
|Marsh tunnel time||Laboratory value: 68 sec. (outlet diameter 4,76 mm, may vary depending on the mixing|
|Suspension density||Laboratory value: 1.6 kg / dm³; Site value: ≥ 1.58 kg / dm³|
|Suspension temperature||laboratory value: 20 ° C; Site value: 5 - 25 °C|
|Depreciation||laboratory value: < 1.5 % after one hour, 1.5 % after 24 hours;|
Site value: < 2.0 % after one hour
|Effective thermal conductivity||2,0 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 compatibility||Yes, the certificate is available and can be requested at any time.|
|Frost-thaw resistance||DIN 12371:2010-07|
|Sulfate resistance||Sulfate resistance test certificate is currently being processed.|
|Resistance to limedissolving|
|Yes, the certificate is available and can be requested at any time.|
|Tools/Equipment||Fischer 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.
|Storage||If stored correctly (dry, on pallets) and in original packaging, the material can be kept for at least 6 months.|
|Delivery||25 kg bags / 40 bags on Europallet + Big Bags|
|Safety instructions||The 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.
|Disclaimer||The 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.
Damages of geothermal drillings are actually caused by non professional settings of the probes or difficult geological or ...
The bigger drilling space has to be grouted dense and durable to secure the pipes, to ensure a high thermal conductivity from the ...
A grouting material of high quality prevents with its environmental compatibility, the introduction of harmful substances into the ...
The frost thaw stability is important for the grout in regards to the operation of the system. Possible effects of frost are ...
Fischer Spezialbaustoffe GmbH developes and produces thermally enhanced grouting/ backfilling material for borehole heat exchangers.
The products Fischer GeoSolid are characterised by a high thermal value, a proven frost-thaw-stability as well as optimum physical properties. Furthermore Fischer GeoSolid 240HS is suitable for the use in sulphate bearing ground waters.