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Polished concrete may be considered a form of sustainable design flooring, if less material is used than in comparable types of flooring. [citation needed] Polished concrete floors have the following advantages: low-maintenance [7] – polished concrete is easily maintained with the use of clean water or a neutral pH cleaner. The application of ...
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The overall embodied energy of concrete at roughly 1 to 1.5 megajoules per kilogram is therefore lower than for many structural and construction materials. [113] Once in place, concrete offers a great energy efficiency over the lifetime of a building. [114] Concrete walls leak air far less than those made of wood frames. [115]
Between 2006 and 2009, the tower underwent an £E15 million restoration project by the Egyptian Arab Contractors Company. The restoration and repair process cost about 15 million pounds, which included treating and restoring the tower's concrete and adding 3 floors of metal structures at the bottom of the tower inlaid with the body, and another floor above the entrance.
In situ is a Latin phrase meaning “in the place”. When referred to chemistry or chemical reactions it means “in the reaction mixture”. In situ S/S, accounting for 20% of S/S projects from 1982–2005, is used to mix binding agents into the contaminated material while remaining on the site.
The organization estimated that the 3D-printed concrete walls saved about 15% per square foot in building costs. The 1,738 ft 2 home in Arizona was constructed in the summer: a time when construction typically halts due to the extreme heat. 80% of the home was constructed using 3D printing including the interior and exterior walls, while the ...
Concrete has a total embodied energy of 1.69 GJ/tonne, lower per unit mass than most common building materials besides wood. However, concrete structures often have high masses, so this comparison is not always directly relevant to decision making. Additionally, this value is based only on mix proportions of up to 20% fly ash.
All concrete structures will crack to some extent, due to shrinkage and tension. Concrete which is subjected to long-duration forces is prone to creep. The density of concrete varies, but is around 2,400 kilograms per cubic metre (150 lb/cu ft). [1] Reinforced concrete is the most common form of concrete.
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