HIGH MECHANICAL STABILITY
Compressive strength >10 MPa for a mechanically stable and permanently load-bearing wellbore filling.
HIGH THERMAL CONDUCTIVITY
λ = 2.0 W/m·K for efficient heat transfer between the geothermal probe and the surrounding soil.
RELIABLE HYDRAULIC SEALING
Very low water permeability with a kf value of kf = 3.8–4.2 × 10⁻¹⁰ m/s for reliable hydraulic sealing of teh borehole and safe groundwater protection.
RELIABLE APPLICATION
Safe and reproducible mixing, pumping, and grouting on the construction site.
LONG-TERM DURABILITY
High resistance to thermal and hydraulic stresses for long-term stability of the geothermal borehole backfill.
COST-EFFECTIVE GROUTING
Low material consumption of … kg of grout per m³ of backfill reduces material costs per meter drilled.
SHORT SHIPPING DISTANCES AND LOWER LOGISTICS COSTS
Produced in Veľké Leváre, Slovakia, approximately 90 km from Vienna. Short transport distances enable cost-effective deliveries and quick delivery times to Vienna, Lower Austria, and Burgenland.
“A technically balanced, high-performance grouting material for efficient heat transfer, reliable hydraulic sealing, and high mechanical stability.”
Thomas S. - Drilling Expert
✓ Super strong and durable
✓ High frost resistance
✓ Good flow properties
✓ High volume stability
✓ High sulfate resistance
✓ High thermal conductivity of approx. 2 W/mK
✓ Meets the requirements of DVGW W 347 (groundwater safety)
✓ Available in 25KG bags and Bigbags
Safe, void-free annular space backfill
Optimized flowability and rapid thixotropic development reliably fill even small voids and reduce the risk of washout by groundwater.
Reliable application
Marsh funnel time: 7 s per EN 445 with a 10-mm outlet—for smooth-flowing and reproducible application.
Rapid strength development
A high cement content enables rapid hardening and early mechanical stability of the backfill.
Permanently stable backfill
Sulfate-resistant and frost-resistant down to approx. −15 °C—for permanently stable backfills even under demanding groundwater and temperature conditions.
Homogeneous, fine-grained suspension
Premixed dry product consisting of clay minerals, cement, and quartz powder with a maximum particle size of 0.5 mm—for uniform and reliable annular space backfilling.
Suitable for backfilling geothermal boreholes
Premixed dry product for backfilling geothermal boreholes, suitable for applications in accordance with VDI 4640 Part 2.
