How We Make Aggregates
Quarried materials (including gravel and sand) are the main components by volume of concrete, and are used in many other applications. You can find out how aggregates are manufactured by clicking the link below.
Supplying quality aggregates in the form of sub base or base course for roading projects is a major part of Holcim Aggregates business.
By removing much of the variability that accompanies natural products, we enable our customers to optimise their mix designs to get the best from the materials and, consequently, cost-effective concrete.
With the benefit of our Barmac crushers and considerable experience, we consistently supply sealing aggregates that meet the tight product specification with exactly the right angular shape to maximise skid resistance and lock into the binder material.
In New Zealand and overseas, modern asphalts are becoming increasingly popular as surfaces for roading, pathways, airport runways, parking areas, sporting and play areas.
Our ability to devise interesting new uses of aggregates is reflected in the many specialised products that have been developed over the years by Holcim Aggregates.