Using MagnaDense will create more weight with less volume. Properties of the high density concrete applied on pipelines include potential for reduced volume by up to 50% or 80% increase in weight, while keeping the equivalent strength to standard concrete.
MagnaDense for offshore pipeline weight coating
MagnaDense is an LKAB Minerals highly dense high grade aggregate, manufactured from the natural iron oxideMagnetite. We mine and process it at our group’s resources in Northern Sweden. The product is harmless to the environment and non-toxic in all its forms. MagnaDense is mixed into a high density concrete, which is then applied to the pipelines and provide a heavy weight coating.
The correct heavy concrete mix for concrete weight coating in offshore use
When preparing the heavy dense concrete for your pipelines you need to take into account that
- MagnaDense replaces sand and gravel but other concrete ingredients remain the same
- standard concrete mixing equipment can be used
- the density of the concrete will vary depending on pipeline diameter and sea depth
- the average density for pipeline coating ranges between 3.2 and 3.4 t/m3
LKAB Minerals sales managers can help you to select the right combination of MagnaDense grade for your pipeline project. A brochure with concrete weight coating projects is available via LKAB Minerals Sales Managers upon request.
Applying offshore pipeline concrete coating
Our customers, manufacturers of coated pipelines, use two different techniques to apply the heavy concrete as a coating to the pipelines.