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It came in less than its budget of $50 million at $35 million. The dam's construction validated economic and construction speed benefits where 330,000 cubic meters (430,000 cu yd) of concrete were finished in less than five months at about $17 per cubic meter ($13/yd 3), which includes additional efforts to correct defects.
(Green concrete is approximately 2,328 kilograms per cubic metre (3,924 lb/cu yd). [23] This problem can be overcome by utilizing so-called "mini mix" trucks which use smaller 4 m 3 capacity mixers able to reach more weight restricted sites.
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.
Concrete has a very low coefficient of thermal expansion, and as it matures concrete shrinks. 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]
One example is the Pantheon, where the aggregate of the upper dome region consists of alternating layers of light tuff and pumice, giving the concrete a density of 1,350 kilograms per cubic metre (84 lb/cu ft).
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