Heavy weight ballast; loose or mixed in concrete

MagnaDense is a high density aggregate, used as heavy weight ballast in many applications; either as a loose ballast aggregate or incorporated into concrete.

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Denise Roberts

Denise Roberts

Commercial Director Magnetite & Foundries

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Heavy ballast material

Whether your need is for heavy weight to balance a bridge, to keep a gravity-based structure in place, to make a counterweight for heavy vehicles or any other ballast project, you’ll need a high density material to get the right weight for your design.

Why MagnaDense is preferred as heavyweight ballast

Depending upon your application MagnaDense can be used as a loose ballast or concrete ballast with high density. The main reason for choosing our product is because of its weight, but there are many additional reasons to opt for the LKAB Minerals heavy aggregate. We have listed the important benefits of our natural high density material below:

  • Weight; density of up to 5.1 t/m3
  • Less volume; in comparison with other aggregates or standard concrete
  • Inertness; does not react or corrode when in prolonged contact with seawater
  • Recyclable; sustainable for both the environment and your assets
  • Reduces risk of cracking; when mixed into concrete it aids in reducing cracking risk
  • Quality; always the same specification for each grade
  • Availability; year-round worldwide supply
  • Archimedes principle benefit; relative more weight when used under water (see picture to the right)
Which benefit is most important for you as a ballasting company and your project in particular? Tell us in a one-on-one conversation with a regional sales manager who can help you select the right grades, getting the right ballast density. Contact details can be found on this page.

Projects with MagnaDense ballast weights

LKAB Minerals has supplied MagnaDense ballast for concrete or as loose ballast to many projects all over the world such as offshore foundation ballast and marine ballast weights. For some projects, you can find more information on this website. Please click on the links below and take a look at the following detailed projects:

  • Draugen; ballast recycled after 22 years in the ocean
  • Wave & Tidal; a new method of energy production at the bottom of the sea

Case Studies on ballasting projects which are available

For some of the ballasting projects we have been involved in, we have created detailed documents which are available upon request:

Of course, we have supplied our heavy aggregate for many other projects which we can tell you about in person.

Heavy weight ballast supplied worldwide

We manufacture MagnaDensefrom the natural mineral Magnetite and mine this from our resources in Kiruna, Northern Sweden. It has a natural density of up to 5.1 t/m3. The product is harmless to the environment and non-toxic in all its forms.


LKAB Minerals provides MagnaDense for many offshore projects all over the world. LKAB Minerals has several strategic stock locations worldwide for the products from our owned mines in the North of Sweden.


Bridges - Öresunds bridge - MagnaDense

Contact us for datasheets, product definitions and case studies or for help to select the best density for ballast using MagnaDense for your project. You reach your local salesperson via the contact field below. We look forward to making your next ballasting project a perfectly balanced one!