18.1 - Principles of Concrete Mix Design
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Practice Questions
Test your understanding with targeted questions
Define workability in the context of concrete mix design.
💡 Hint: Think about why a concrete mix needs to be easy to handle.
What does the characteristic strength (fck) represent?
💡 Hint: Recall the importance of time in concrete setting.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is workability in concrete mix design?
💡 Hint: Consider the handling of concrete on a job site.
True or False: A lower water-cement ratio always leads to better workability.
💡 Hint: Think about the effects of too little water.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
A construction project requires a high-strength concrete that will be exposed to harsh weather. Identify the key considerations for mix design that prioritize strength and durability.
💡 Hint: Think about environmental factors and material selection that impact durability.
Calculate the target mean strength for a concrete mix if the characteristic strength is 25 MPa and the standard deviation is 4 MPa using k = 1.5.
💡 Hint: Use the given formula to incorporate all the variables.
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