the concept of water cement which plays main role in the concrete so it important know about that...
Concrete consists of cement, fine aggregates, coarse aggregates, and water. Water is needed for the hydration of cement which leads to the formation of compounds like dicalcium silicate, tricalcium silicate, tetracalcium aluminoferrite, which are the building blocks of the compressive strength of the concrete. Since the cement is the finest particle amongst the ingredients, and strength of the concrete depends largely on the hydration of cement, the strength is extremely sensitive to the changes in water-cement ratio. Hope this helps.
The maximum water-to-cement ratio may be established by the customer or authority having jurisdiction based on anticipated exposure conditions. Concrete is designed to withstand a certain maximum load per area before failing, known as compressive strength A number of factors influence the concrete’s ability to withstand the force from an applied load, such as the size, type, quantity and gradation of aggregates, the type and quantity of cement and/or supplementary cementitious materials, the amount of mix water, the age or maturity of the concrete, and the production practices used in placing, consolidating and curing the concrete. Small changes in any of these variables can have a profound effect on the concrete’s compressive strength, permeability and durability.
