What is water cement ratio?
it should be on the cement bag or bucket your purchased but a .45 - .50 to 1 part cement is optimal for normal to intense weather conditions. Rule of thumb: Durability increases the less permeable the concrete mix is. Strength improves with lower water cement ratios. Check the 1997 Uniform Building Code if you want real specifics. Good Luck
Well buddy that depends on your concrete design, don't you think? The highter the ratio is the less strength the concrete will developt. That's why, if you have the workers making the concrete, to check them so they dont add more water so it be easier to handle it.
For 1m^2 of 280 Kg/cm^2 Design Concrete I have used: 8 bags of Concrete 0.4 m^2 3-4 stone 0.4 m^2 washed fine aggregated (sand) 280 liters water Some times I got up to 300 Kg/cm^2, some times 260 Kg/cm^2 tested Concrete, most of the time resistance was better when it was vibrated for long periods and hydrated copiously the first week, without accelerants. Using too much water will result in a poor concrete. Using to little will reduce fluidity when pouring and may produce porosity.
Water Cement Ratio is the weight of water divided by the weight of cement, R = Ww/ Wc
