n Civil Engineering = Siviele Ingenieurswese - PrimeComposite slab system drastically reduces CO emissions : environmental engineering

Volume 23, Issue 7
  • ISSN : 1021-2000



The concrete construction industry depends on environmentally demanding processes, such as mass consumption of energy and raw materials, and extensive transportation, thereby contributing significantly to global carbon dioxide (CO) emissions. Globally, Portland cement production emitted 932 million metric tons of CO (MtCO) in 2002, i.e. approximately 7% of all stationary CO sources. Typical emission rates between 1995 and 2005 varied from 0.6 to 1.0 kg of CO per kg of Portland cement. While alternatives to Portland cement exist, such as blended cements or low CO-emitting cements, the demand for Portland cement continues to increase. In the production of 1 000 kg of Portland cement, 125 of fossil fuel and 118 kWh of electricity are consumed.

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