High density concrete sea anchors for subsea installations

To increase weight, MagnaDense is added to produce high density concrete sea anchors, keeping for subsea installations in place.

The extra weight for concrete anchors, reached by adding our heavy weight natural aggregate MagnaDense, will improve the protection and stability of your anchoring product. It allows to increase the concrete density up to 4 t/m3.

Concrete mattresses made with high density MagnaDense protect pipes and cables on the seabed.

Various forms of concrete anchoring

Precast concrete anchors among others prevent undersea currents from dislodging pipelines from their bedding in the sea. Anchoring comes in many shapes and sizes such as:

Depending on your project the required weight for your anchor differs. With over 50 years of experience in supplying high density aggregate to the concrete industry, we can help you define the right concrete mix for you. Feel free to contact our sales team for additional information or a sample of our different MagnaDense grades.

Heavy concrete coastal protection blocks to protect the coast against damages

Advantages of MagnaDense concrete sea anchors

Concrete undersea anchors made with high density concrete have two main functions:

  1. place a protective barrier around valuable installations
  2. keep installations at the seabed and protect them from buoyancy forces

Besides adding weight to your concrete mix with MagnaDense, manufactured from the natural iron oxide Magnetite, it is:

  • Harmless to the environment
  • Non-reactive to seawater
  • Abrasion resistant
  • Increasing the underwater lifetime for concrete

All of which make the LKAB Minerals’ product range of MagnaDense a natural fit for your concrete anchor production process.

Global availability of our high density aggregate

LKAB Minerals’ MagnaDense for heavy weight concrete is mined at our groups’ resources in Northern Sweden. With strategic global stock locations worldwide, the supply of our heavy aggregate is readily available worldwide and year-round.

Contact us via the expert box on top of this page to request a quotation, data sheet, business case or other detailed information you need.

Watch below below video to learn more about the origin of the MagnaDense and the different offshore applications it can serve.

Application expert

Bo Öhman
Sales Manager Magnetite

Ask me a question. Contact information.