What is the quantity of water required per bag?

20kg bag will require 8 to 12 litres of water, one 40kg bag will require 16 to 24 litres of water or a 94lb bag of Portland cement will require 4.5 to 7 gallons of water.

How many Litres of water is in a bag of cement?

Normal range for amount of water used to mix each 50 kg bag of cement is between 20 liters and 30 liters (94 lb. bag of cement is between 4.5 gal.

How much water does it take to hydrate a concrete slab?

, Structural Engineer and Blogger at Structural Madness. To hydrate any cement completely, the amount of water you require is 30\% the weight of the cement, but to account for workability and the loss of water you can probably take the weight of water to be around 40-45\% to the weight of the cement.

What is the ratio of cement to water for hydration?

For every pound (or kilogram or any unit of weight) of cement, about 0.35 pounds (or 0.35 kg or corresponding unit) of water is needed to fully complete hydration reactions. However, a mix with a ratio of 0.35 may not mix thoroughly, and may not flow well enough to be placed.

Why can’t all of the cement hydrate?

This is because the hydration product has approximately 30\% pore space that must be present, and water must be available to fill it. Not all of the cement can hydrate if the amount of original mixing water-filled space is less than that provided at a w/c of approximately 0.4, even though only half of the water will go into chemical combination.

How much pore space is required for cement to hydrate?

However, for a given volume of cement to hydrate completely, there must be an amount of original mixing-water-filled space equal to 1.2 times the solid volume of the cement. This is because the hydration product has approximately 30\% pore space that must be present, and water must be available to fill it.