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2 cards from this section. Quick, good the night before a test.
What is the typical range for water-cement ratio in high performance concrete?
Think of numbers that represent low ratios.
Name one type of admixture used to improve workability.
These help keep concrete workable without adding water.
What is the significance of the water-cement ratio?
Think about what changes in a mix with different water amounts.
True or False: A higher water-cement ratio is always better for concrete.
Consider the relationship between water and overall strength.
Given that a construction project requires 600 kg of cement to maintain a water-cement ratio of 0.3, how much water will be needed?
Use the water-cement ratio formula directly.
Discuss the trade-offs when selecting a high-performance concrete mix with too low a water-cement ratio.
Consider the balance between properties and practicality.
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