Product information

Ground Granulated Blast Furnace Slag (GGBS) is a cement substitute that improves durability. It is a by-product of the iron-making industry. GGBS, used in a concrete mix, offers a good alternative to traditional Portland Cement.

What is GGBFS?

The abbreviation GGBS or GGBFS are interchangeable and mean Ground Granulated Blast Furnace Slag.

Certified use in concrete, mortar, and grout

As a by-product of existing industrial processes, GGBS has 10 times less embodied C02 than the average CEM1 product and can be used to replace up to 70% CEM1 in concrete*. Our products conform to BS EN 15167-1, the British standard for using Ground Granulated Blast furnace Slag in concrete, mortar, and grout.

GGBS counts fully towards the cement content of concrete mixes. Check our monthly conformity certificates to see the detailed chemical composition of our GGBS here.

*Further details available on the third-party verified GGBS Environmental Product Declaration

Technical information and support on GGBS

LKAB Minerals is supporting:

  • Concrete manufacturers
  • Concrete formulators
  • Ready-mix companies
  • Pre-cast companies
  • Admixture companies
  • Architects
  • Civil and structural engineers
  • Students
  • Charter builders
  • And other parties involved in the construction industry

You can calculate the right amount of GGBS in concrete mixtures by contacting our sales team via the contact form.

Packaging and logistics

LKAB Minerals only supplies its bulk GGBS in the United Kingdom but can supply bagged GGBS further afield. We are proud to state that we have the most up-to-date, state-of-the-art GGBS production site in the UK.

For your convenience, we have GGBS available in the following ways:

  • 25 kg bags
  • big bags
  • bulk
Ground Granulated Blast-furnace Slag (GGBS) as a cement substitute

Ground Granulated Blast-furnace Slag (GGBS) as a cement substitute

GGBS from LKAB Minerals is made from a by-product in the iron-making industry, offering a good alternative to Portland Cement.

Mineral information

LKAB Minerals is part of the LKAB group that sells its iron ore (pellets) to the steel-making industry. Our company recovers, reclaims, and recycles the GGBS by-products from this same steel industry.


A non-toxic, non-hazardous stable mineral.