CO₂ emissions with concrete admixtures

Concrete admixtures can be used to reduce cement content without in any way impairing the concrete quality. Large quantities of CO₂, which is emitted during the combustion of limestone in cement production, can thus be avoided.

Potential cuts in the order of 72 million tons of CO₂

For example, one Sika customer who needed 3 600 cubic meters of concrete for the construction of a gas storage tank opted to use the admixture Sika ViscoCrete. The resulting 9% net reduction in CO₂ emissions was in this case equivalent to 50 tons of CO₂. Applied to the annual worldwide concrete consumption of 5 billion cubic meters, this offers potential cuts in the order of 72 million tons of CO₂, a figure roughly equivalent to the annual CO₂ emissions
of Austria.