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MagnaDense is a natural high-density aggregate used to produce high-density concrete for coastal protection and erosion control. By increasing concrete density, MagnaDense improves the stability of breakwaters and armour units, helping them withstand powerful wave forces while enabling more efficient designs.
Reliable coastal protection with MagnaDense
When it comes to coastal protection, stability is everything. MagnaDense is a natural high-density aggregate that delivers more weight in less volume, making it an ideal solution for breakwaters, erosion control structures, and coastal defence applications.
By incorporating MagnaDense into concrete, manufacturers can produce high-density concrete with densities of up to 4.0 t/m³. The increased mass improves the stability of concrete armour units, helping them withstand powerful wave action while reducing the overall size of individual units.
As coastal infrastructure projects face increasing demands for durability, sustainability, and aesthetic design, selecting the right materials is critical. MagnaDense combines long-term performance with environmental compatibility, making it a trusted choice for coastal and marine construction projects worldwide.
Breakwater and coastal defence applications
High-density concrete made with MagnaDense can be used in a wide range of coastal protection structures, including:
Cubes
Tetrapod™ armour units
Accropode™ armour units
Core-Loc™ armour units
X-block armour units
Riverbank and erosion protection units
Regardless of the breakwater design, increased concrete density delivers greater stability, reduced size and therefore improved resistance to wave forces.
Key benefits of MagnaDense
Increased density for enhanced stability
Reduced armour unit size without compromising performance
Easier handling, transport, and placement of smaller units
Safe for use in marine and freshwater environments
An inert natural mineral that does not react or corrode when exposed to water
Meets EN 12620 requirements for aggregates used in concrete
CE marked
Consistent quality and predictable performance
All breakwater types can benefit from the use of high-density MagnaDense in coastal defence applications. In this video, based on research findings, you will see a detailed explanation of how heavyweight concrete blocks can be used for erosion protection.
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Coastal protection – MagnaDense – High Density Concrete
Proven project experience
LKAB Minerals has supplied MagnaDense for numerous coastal and erosion protection projects across Europe, including:
Breakwater, IJmuiden, Netherlands
Eastern Breakwater Extension, Sines, Portugal
Riverbank protection units, Netherlands and Belgium
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 coastal protection projects, with strategically located stock points enabling efficient delivery to your preferred project location. This ensures consistent product quality and dependable year-round supply.
Global expertise and support
LKAB Minerals operates worldwide, providing local support backed by global expertise. Our specialists are available to help you select the optimal high-density aggregate solution for your project, ensuring the right performance for your specific requirements. Influences on sea defence
