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  2. Ready-mix concrete - Wikipedia

    en.wikipedia.org/wiki/Ready-mix_concrete

    In the UK, ready-mixed concrete is specified either informally, by constituent weight or volume (1-2-4 or 1-3-6 being common mixes) or using the formal specification standards of the European standard EN 206+ A1, which is supplemented in the UK by BS 8500. This allows the customer to specify what the concrete has to be able to withstand in ...

  3. Concrete - Wikipedia

    en.wikipedia.org/wiki/Concrete

    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]

  4. Cubic metre - Wikipedia

    en.wikipedia.org/wiki/Cubic_metre

    The cubic metre (in Commonwealth English and international spelling as used by the International Bureau of Weights and Measures) or cubic meter (in American English) is the unit of volume in the International System of Units (SI). [1] Its symbol is m 3. [1] It is the volume of a cube with edges one metre in length.

  5. What's the Actual Difference Between Cement and Concrete? - AOL

    www.aol.com/lifestyle/whats-actual-difference...

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  6. Environmental impact of concrete - Wikipedia

    en.wikipedia.org/wiki/Environmental_impact_of...

    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.

  7. Roman concrete - Wikipedia

    en.wikipedia.org/wiki/Roman_concrete

    [1] Roman concrete was in ... having a much higher density of 2,200 kilograms per cubic metre (140 ... Proponents say that concrete made with fly ash can cost up to ...

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