17 - Design of Concrete Mix for Pavements
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Practice Questions
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What is the typical compressive strength range for highway pavements?
💡 Hint: Think about the strength required for road traffic.
What purpose does workability serve in a concrete mix?
💡 Hint: Consider how ease of use impacts construction.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the typical compressive strength range required for highway concrete pavements?
💡 Hint: Refer to the performance criteria discussed.
True or False: Flexural strength is usually assessed via direct compression tests.
💡 Hint: Think about the modes of applying forces in testing.
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Challenge Problems
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A new concrete mix design aims for a target flexural strength of 5 MPa for a specific highway's conditions. If the characteristic strength is measured at 4.2 MPa with a standard deviation of 0.8, find the required target strength using the IRC:44 method.
💡 Hint: Use the statistical constant to adjust the characteristic strength.
Calculate the amount of cement needed if a mix design requires 240 kg of water and aims for a water-cement ratio of 0.5.
💡 Hint: Ensure you apply the water-cement ratio correctly in your calculations.
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