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3 cards from this section. Quick, good the night before a test.
What is the function of water in concrete?
Think about what happens when you mix cement and water.
What should the pH level be for mixing water?
Recall the purity standards for concrete mixing.
What is the primary function of water in concrete?
Focus on what makes concrete strong.
True or False: Water with high salt concentration can be used to mix concrete.
Recall the quality standards for mixing water.
A construction project requires a concrete mix with a compressive strength of at least 30 MPa. The selected cement type has a recommended water-cement ratio of 0.5. How much water should be used with 300 kg of cement?
Multiply cement weight by the w/c ratio.
Describe how you would adjust the water-cement ratio for a concrete mix designed for a hot climate. What would be the considerations?
Think about temperature effects on water evaporation.
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