Drawbacks - Drawbacks There are also several drawbacks and...

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Drawbacks There are also several drawbacks and limitations on green cement technology. Much of the benefits come with a dependency on location for materials and transportation. The farther away from the necessary aggregates, the more expensive this technology becomes, and the less efficient. Further data on expenses related to green technology in practice, and the use of green cement over long time periods is also not readily available. Transportation Emissions/ (dependence on location) Waste products and construction debris are the main constituents for production, so green cement is dependent on the location of these materials to maintain efficiency. Once the materials leave the range of optimization, the reduction of carbon dioxide emissions ceases to be productive. Studies show that to transport one ton of SCMs a distance of 1000 km releases about .022 tons of carbon dioxide (7). The greater the distance the materials have to be transported the more emissions from the moving sources, and the greater expenditure on transportation, and emissions. Uncertain Future Green cement is reliant on the future demand and availability of recycled materials. Using recycled materials and construction debris is cheaper, but requires large amounts of debris and waste. This is not a problem now, but in the future it is unknown if these
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This note was uploaded on 04/24/2010 for the course ENGL 415 taught by Professor Rieck during the Spring '09 term at Kansas State University.

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Drawbacks - Drawbacks There are also several drawbacks and...

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