Construction

Limestone powder is the most widely used building material in the world. It is to be found in light-coloured tiles, in plaster, levelling compounds, roofing felt and fibre cement board. The main ingredient in cement is limestone and dolomite is used in rock wool. Self-compacting concrete contains not only cement but also limestone. Quicklime is needed as a binding agent in lime sand bricks, and slaked lime in all types of plasters and levelling compounds.

Road and ground engineering

Limestone-based products are needed in road building, too. Deep stabilisation is used as a method to strengthen foundations when building roads and railways and to prevent subsidence and improve bearing properties. Surface stabilisation can be improved with the aid of lime to improve the characteristics of the soil.

Ground limestone is used as a filler for making asphalt. Mixed with bitumen it forms a strong material for surfacing that will withstand all kinds of weathers. Slaked lime can be used as a binding agent in the asphalt used for such demanding purposes as airport runways. The white substance used for road mark­ings contains lime powder.

Road and ground engineering is an important user of surplus stone. Refining sand is used to cover refuse tips.

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