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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the primary goal of mix design?
💡 Hint: Think about what characteristics we need from concrete.
Question 2
Easy
Why is workability important?
💡 Hint: Consider how concrete is applied in construction.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the primary objective of mix design?
- To determine the cost
- To achieve desired concrete properties
- To select materials
💡 Hint: Think about what properties we need from concrete.
Question 2
True or False: The water-cement ratio determines the concrete's workability.
- True
- False
💡 Hint: Consider how changing water content affects mixing.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A project requires concrete with a compressive strength of 40 MPa. If the characteristic strength is 30 MPa with a risk factor of 1.65 and standard deviation of 5, what is the target mean strength needed?
💡 Hint: Use the target mean strength formula!
Question 2
Describe how you might adjust your mix design if your initial concrete showed low workability.
💡 Hint: Think about the materials you can modify.
Challenge and get performance evaluation