22.3.6 - Specific Gravity and Water Absorption
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Practice Questions
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What is specific gravity?
💡 Hint: Think about how it relates materials of different densities.
What does water absorption measure?
💡 Hint: What could happen to concrete if aggregates absorb too much water?
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the apparent specific gravity formula?
💡 Hint: Remember which dimensions we leave out.
Water absorption values in aggregates typically range from?
💡 Hint: Think about the impact of higher absorption on durability.
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Challenge Problems
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An aggregate sample has a dry weight of 1.5 kg and weighs 1.7 kg when saturated. Calculate the water absorption and discuss its potential impact on concrete performance.
💡 Hint: Use the water absorption formula and think about long-term performance.
If a bulk specific gravity of an aggregate is found to be 2.7 and apparent specific gravity is 2.5, what can you infer about the water-permeable voids?
💡 Hint: Look at the relationship between the two specific gravities.
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