Greening Cement Production has a Big Role to Play in Reducing Greenhouse Gas Emissions -UNEP Global Environmental Alert Service (GEAS) - November 2010
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2010Author
United Nations Environment Programme
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RT Generic T1 Greening Cement Production has a Big Role to Play in Reducing Greenhouse Gas Emissions -UNEP Global Environmental Alert Service (GEAS) - November 2010 A1 United Nations Environment Programme YR 2010 LK http://hdl.handle.net/20.500.11822/8832 PB AB TY - GEN T1 - Greening Cement Production has a Big Role to Play in Reducing Greenhouse Gas Emissions -UNEP Global Environmental Alert Service (GEAS) - November 2010 AU - United Nations Environment Programme Y1 - 2010 UR - http://hdl.handle.net/20.500.11822/8832 PB - AB - @misc{20.500.11822_8832 author = {United Nations Environment Programme}, title = {Greening Cement Production has a Big Role to Play in Reducing Greenhouse Gas Emissions -UNEP Global Environmental Alert Service (GEAS) - November 2010}, year = {2010}, abstract = {}, url = {http://hdl.handle.net/20.500.11822/8832} } @misc{20.500.11822_8832 author = {United Nations Environment Programme}, title = {Greening Cement Production has a Big Role to Play in Reducing Greenhouse Gas Emissions -UNEP Global Environmental Alert Service (GEAS) - November 2010}, year = {2010}, abstract = {}, url = {http://hdl.handle.net/20.500.11822/8832} } TY - GEN T1 - Greening Cement Production has a Big Role to Play in Reducing Greenhouse Gas Emissions -UNEP Global Environmental Alert Service (GEAS) - November 2010 AU - United Nations Environment Programme UR - http://hdl.handle.net/20.500.11822/8832 PB - AB -Metadata
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Next to water, concrete is the second-most consumed substance on earth on average, each person uses nearly three tonnes a year. Portland cement, the major component of concrete, is used to bind the materials that make up concrete. The concrete industry uses about 1.6 billion tonnes of portland cement and produces some 12 billion tonnes of concrete a year.The industry has a large ecological footprint: it uses significant amounts of natural resources such as limestone and sand, and depending on the variety and process, requires 60-130 kg of fuel oil and 110 kWh of electricity to produce each tonne of cement. In addition, the cement industry is second only to power generation in the production of CO2. Producing one tonne of portland cement releases roughly one tonne of CO2 to the atmosphere, and sometimes much more, and the cement industry accounts for 7-8 per cent of the planets human-produced CO2 emissions. Half of it comes from producing clinker (the incombustible remains of coal combustion), 40 per cent from burning fuel and 10 per cent from electricity use and transportation (Mahasenan and others 2003, WBCSD 2005).
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