High-density concrete for hydrostatic pressure control
MagnaDense is a high-density aggregate designed for applications where hydrostatic uplift forces must be effectively counteracted. By increasing the unit weight of concrete, MagnaDense provides structural stability against buoyancy while reducing the required concrete volume.
Compared to conventional concrete, high-density MagnaDense concrete can reduce the required volume by more than 50% when compensating for hydrostatic forces – making it an optimal solution for space-constrained underground construction projects.
Applications in underground and submerged structures
MagnaDense is widely used in underground structures and submerged concrete applications, including:
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Tunnels and tunnel linings
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Foundations exposed to groundwater
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Pipe coatings and offshore pipelines
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Parking garages and basements
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Sluices and hydraulic structures
By increasing the density without enlarging structural dimensions, MagnaDense helps engineers design more compact structures. This reduces excavation depth, lowers material consumption, and decreases overall construction costs.
Additionally, the higher density improves the attenuation of ground-borne noise and vibration, making it well suited for infrastructure projects in urban environments.
Key Benefits of MagnaDense high-density concrete
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More weight, less volume
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Concrete with a density of up to 4 t/m³ (depending on mix design)
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MagnaDense ballast with bulk densities between 3-4 t/m³ (depending on compaction level)
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Effective hydrostatic pressure compensation
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Reduced structural volume and thickness
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Lower excavation and construction costs
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Optimized for underground and marine environments
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Pumpable and compatible with standard concrete placement methods
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Chemically inert and safe for use in contact with water
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Complies with EN 12620 (aggregates for concrete)
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CE-marked in accordance with European market requirements
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Consistent quality with predictable structural performance
Why choose MagnaDense for hydrostatic applications?
MagnaDense provides a reliable solution for engineers facing challenges related to groundwater pressure, buoyancy, and limited construction space. By enabling high-density concrete design, it supports safer, more efficient, and cost-effective underground construction.
Consistent Product Supply and Quality
As part of the LKAB Group, with owned mines in Northern Sweden, we ensure a reliable supply of high-quality, standardised heavy aggregate products. LKAB Minerals supplies MagnaDense worldwide for use in hydrostatic application projects, with global stock locations enabling efficient delivery to your preferred project location. This ensures consistent quality and a dependable supply for both high-density concrete and loose ballast applications.
Global Expertise and SupportGlobal Expertise and Support
LKAB Minerals operates worldwide, providing local support backed by global expertise. Our specialists are always available to help you select the optimal heavy aggregate solution for your project, ensuring the right performance for your specific requirements.
Benefits of high-density concrete in underground structures
MagnaDense is produced from natural iron oxide (magnetite), sourced from LKAB’s own mines in northern Sweden. This controlled supply chain ensures consistent quality and reliable performance in demanding underground construction applications.
