3.5.2 - Specific Gravity and Water Absorption (IS: 2386 Part III)
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Practice Questions
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What is specific gravity?
💡 Hint: Think about how we compare the density of different materials to water.
Name the two types of specific gravity for aggregates.
💡 Hint: Consider which aspect of the aggregate each type measures.
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Interactive Quizzes
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What does bulk specific gravity include in its measurement?
💡 Hint: Think about how this measure affects the concrete composition.
True or False: Water absorption has no significant impact on the water-cement ratio.
💡 Hint: Recall the importance of maintaining the correct water level in concrete mixes.
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Challenge Problems
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A concrete mix is designed using aggregates with a bulk specific gravity of 2.5 and a water absorption rate of 3%. If the desired water-cement ratio is 0.5, how would the water addition change based on the absorption characteristics of these aggregates?
💡 Hint: Consider how the water needed for absorption affects the mix design.
You have two aggregates: one with a bulk specific gravity of 2.65 and water absorption of 1.5%, and another with a bulk specific gravity of 2.45 and water absorption of 4%. Which aggregate should be preferred for high-quality concrete and why?
💡 Hint: Think about how the characteristics of each aggregate influence the final concrete performance.
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