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IMERYS is a supplier of high quality pozzolanic minerals to the building and construction industry throughout the world.
Imerys offer Metastar™ as a high quality concrete additive. Metastar™ is a Metakolin, with controlled and consistent pozzolanic activity that can be used to enhance the performance of concrete products.
Metastar™ reduces the porosity of concrete, a feature that can allow a reduction in the “cover” of concrete needed to protect reinforcing bars from corrosion. Road and marine structures exposed to corrosive salts are good examples where Metastar can be used to advantage.
Where high strength concrete is required, Metastar™ increases cured compressive strength of concrete and also speeds up curing and early strength development. This makes Metastar™ suitable for use in applications where high strength is required quickly, such as airport aprons.
Efflorescence is a common problem affecting concrete, caused by lime salts forming calcium carbonate on the surface of the concrete. Metastar™ can reduce efflorescence by reducing the porosity of the concrete and reacting with the lime salts before they reach the concrete surface.
MetaStar can also be used to modify the handling properties of wet concrete, particularly benefitting the viscosity profile and reducing the tendency to bleed, making leveling and achieving a good surface finish easier.
In Plasters and Mortars, Imerys muscovite mica grades can improve mixing and trowelling properties and improve the flexibility of the finished product.
All of our products are supported by a high standard of technical service, product development and research from a team of highly experienced scientists and specialists in the building & construction industries.