Water
Performance indicator
Mains water consumption as a proportion of production
output
Water is undoubtably an important resource. The concrete
industry aims to reduce its demand for mains water and already
utilises rainwater harvesting and water recycling. Water is an
ingredient of concrete and a tonne of fresh concrete contains 60 to
80 litres of water. The use of admixtures can reduce the water
content by up to 13 litres per tonne. 90 per cent of ready-mixed
concrete already includes water reducing admixtures.
The future of 86.6 litres of mains water usage per tonne of
concrete in 2010 is comparable with the 2008 baseline
figure. It does, however, show a reduction from the 2009
figure. This indicates a level of inconsistency in the
reported data and work to improve the accuracy of this indicator
and include data on the use of controlled water is ongoing, in
order to provide more consistent terminology and measuring
practices for this indicator.
Further information on the water indicator can be found in the
full
report.