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2 cards from this section. Quick, good the night before a test.
Define the water-cement ratio.
Think about how much water you would use compared to the cement.
What happens if you increase the water-cement ratio?
Consider the effects of adding more water.
What is the ideal water-cement ratio for high durability concrete?
Think about the ideal proportions for strength.
Does a higher water-cement ratio lead to better durability?
Remember the effects of increased water on the mixture.
Propose a scenario in which a high w/c ratio could be justified in a concrete mix, and explain the potential trade-offs.
Consider if speed or long-term durability is more critical in your scenario.
Calculate the amount of water needed for a 100 kg cement mix if the desired w/c ratio is 0.4.
Use the formula: Water = Cement Weight x w/c Ratio
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