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Concrete - Water to Cement Ratios

Concrete and water to cement ratios

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water cement mix

Water to cement ratio is the ratio of

weight of water to the weight of cement

used in a concrete mix and can be expressed as

r = wh20 / wc

  = 8.33 qH20 / wc                             (1)

where 

r = water to cement ratio

wh20 = weight of water (lbs)

w= weight of cement (lbs)

qH20 = volume of water (US gallon)

Example - Water to Cement Ratio

A batch of concrete has 45 gallons of water and 900 lbs of cement. The water to cement ratio can be calculated as

r = 8.33 (45 gallons) / (900 lbs)

  = 0.42 

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Tag Search

  • en: water cement ratio
  • es: cemento agua
  • de: Wasserzementwert
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