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3 cards from this section. Quick, good the night before a test.
What is free surface moisture?
Think about how surface water can change the mix.
Why is measuring water absorption capacity important?
Consider the impact on mix strength.
What does free surface moisture refer to?
Think about where water is found before mixing.
True or False: Water absorption capacity of aggregates can influence the amount of water needed in concrete mixes.
How does water absorption impact actual water content?
Given a concrete mix design calling for a 0.5 water-to-cement ratio, if your aggregates retain a moisture content of 3%, how should you adjust your mix?
Consider what it means for the final ratios.
If concrete experienced significant cracking and spalling after a year, hypothesize how moisture adjustments could have prevented it.
Reflect on the relationship between moisture and strength over time.
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