Every mineral we produce is refined through decades of expertise to meet modern industrial demands. From construction and agriculture to advanced manufacturing, our materials help industries build stronger, cleaner, and longer-lasting solutions.
By replacing conventional fine and coarse aggregates in concrete with LKAB Minerals' natural magnetite aggregate, MagnaDense, you can produce high-density concrete with densities of up to 4.0 t/m³, achieving more weight in less volume.
Uses of high-density concrete
For example, in many civil engineering situations, when there is a need for stabilisation, ballasting or additional weight, a high-density concrete mix is the best solution. Fortunately, producing and using concrete with MagnaDense is possible using standard equipment.
Advantages of high-density concrete with MagnaDense
Ultimately, using MagnaDense in your project can provide you with the following benefits:
Increased density of up to 4.0 t/m³
Reduced risk for thermal cracking
Space savings
Cost reduction
Faster project completion
Natural high-density aggregate
MagnaDense is a natural aggregate manufactured from the iron oxide magnetite. Because of its high specific gravity, contractors use MagnaDense as an aggregate to produce high-density concrete. This high-density concrete requires less volume to achieve the mass required for your project.
High-density concrete mix design
When replacing all conventional aggregates with MagnaDense, concrete with a density of up to 4.0 t/m³ can be achieved. Only partially replacing the aggregates with MagnaDense will lead to intermediate densities.
Depending on the application and your required density, you can use one of the several MagnaDense grades LKAB Minerals has available. MagnaDense only replaces the aggregates. The water and cement paste, responsible for strength and workability, continue to perform the same function.As a result, the same strength classes and workability levels, including self-compacting concrete, can be achieved with MagnaDense. With over 50 years of experience in high-density concrete applications, we can advise you on which grades of high-density aggregate best fit your particular concrete mix.
Reduced risk of thermal cracking
Using high density concrete, the risk of thermal cracking can be reduced in two ways.
High-density concrete achieves the same mass in a smaller volume, requiring less cement and therefore generating less heat of hydration.
Alternatively, when high-density concrete is used in the same volume, the same heat of hydration is distributed throughout a greater mass of concrete, reducing temperature rise and thermal gradients.
High-density concrete in building and construction
Many applications can benefit from high-density concrete containing MagnaDense. High-density concrete containing MagnaDense is used across a wide range of industries and applications, including:
High-density concrete: Easy production using standard equipment
For a better understanding, we have created a short video demonstrating how high-density concrete can be produced, handled and placed using standard equipment.
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How to make high density concrete
We understand that every project is unique, and achieving the optimum high-density concrete mix is essential. Therefore, we are happy to help you determine the right solution for your specific requirements. Pleasecontact our technical sales managers for advice and support.
