| 翻訳と辞書 |
Eco-cement
Eco-Cement is a brand-name for a type of cement which incorporates reactive magnesia (sometimes called caustic calcined magnesia or magnesium oxide, MgO), another hydraulic cement such as Portland cement, and optionally pozzolans and industrial by-products, to reduce the environmental impact relative to conventional cement. One problem with the commercialization of this cement, other than the conservatism of the building industry, is that the feedstock magnesite is rarely mined.
== Energy requirements ==
Ordinary Portland cement requires a kiln temperature of around 1450°C. The reactive magnesia in Eco-Cement requires a lower kiln temperature of 750°C,〔Smith, P: "Architecture in a Climate of Change", page 206. Elsevier, 2005, ISBN 0-7506-6544-0〕 which lowers the energy requirements, and hence the use of fossil fuels and emission of carbon dioxide (CO2).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Eco-cement」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|