2.2 - Criteria for Acceptance (IS 456:2000)
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Practice Questions
Test your understanding with targeted questions
What does 'fck' represent in concrete mix design?
💡 Hint: Think about the strength point where only a small percentage of samples fall below.
Define workability.
💡 Hint: Consider how well concrete can flow and fill forms.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is considered the minimum individual strength for acceptance of concrete mixes?
💡 Hint: Remember, it’s the limit set for individual tests.
True or False: Durability is solely determined by compressive strength.
💡 Hint: Think about what else contributes to durability.
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Challenge Problems
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Given a scenario where you've tested seven concrete samples yielding results of: 26, 24, 25, 21, 20, 23, and 22 MPa, calculate whether you can approve this mix for use.
💡 Hint: Assess average strength and individual results!
If you decrease the water-cement ratio from 0.50 to 0.42 to enhance durability, what factors should you monitor?
💡 Hint: Think about how cement interacts with water and aggregates.
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