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Nationwide, the cost of concrete is between $140 to $170 per cubic yard, according to Concrete Network, which connects homeowners with contractors. Average ready-mix prices are about $157 per ...
(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.
The Pantheon in Rome is an example of Roman concrete ... of 1,350 kilograms per cubic metre ... say that concrete made with fly ash can cost up to 60% less, because ...
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.
The parts are in terms of weight – not volume. For example, 1-cubic-foot (0.028 m 3) of concrete would be made using 22 lb (10.0 kg) cement, 10 lb (4.5 kg) water, 41 lb (19 kg) dry sand, 70 lb (32 kg) dry stone (1/2" to 3/4" stone). This would make 1-cubic-foot (0.028 m 3) of concrete and would weigh about 143 lb (65 kg). The sand should be ...
The amount of concrete used in the construction of the dam is estimated at 16 million cubic meters over 17 years. The previous record was 12.3 million cubic meters held by Itaipu hydropower station in Brazil. [152] [153] [154]
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]
The forms used in a precast plant can be reused hundreds to thousands of times before they have to be replaced, often making it cheaper than onsite casting in terms of cost per unit of formwork. [2] Precast concrete forming systems for architectural applications differ in size, function, and cost.
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