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Calcium Carbonates are vital to the construction industry worldwide, both as a building material, limestone aggregate and as an ingredient in various products. It is a natural mineral with a variety of unique characteristics which in turn lead to its variety of applications in the construction industry such as buildings, roads, civil engineering projects etc.


  • Self Compacting Concrete

    Calcium Carbonate when added to concrete promotes self-compacting properties. The product has better workability, increased strength and improved appearance with a smoother surface.

    Flow Screed is designed for application for finishing flooring in residential and commercial projects, and intended for use in unbounded, bonded and floating construction. It has an excellent crushing resistant and has fibre reinforcements.

  • Asphalt

    Calcium Carbonate is used as a multi-purpose filler/anti-strip agent when added to hot rolled asphalt with various sands and gravels. It acts as a sand modifier to improve the resistance of the mixture and provide a consistent material that is easier to work with.

  • It can also be used in paving, renders, ceramics, specialist grouts and cement.

Contact CongCal directly on 094 9553900 for further information and our specialist team will work to meet your requirements.



 “SIAC Construction is a large multi-disciplined construction group with significant operations across Ireland, the United Kingdom, Belgium, Poland and Canada. SIAC provides turnkey solutions to the Civil Engineering and Building industries and has extensive Commercial Development and other investment interests.

We have used McGrath’s for the past number of years and find service and quality of product second to none, we have done many major road overlays like the N6 Ballinasloe to Athlone section in which we needed asphalt filler 24/7 including Sundays and this proved no difficulty to them”

Denis Ryan, Paving & Bituminous Products Manager, SIAC Construction
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