12.1 - Tests to Perform
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Practice Questions
Test your understanding with targeted questions
What does a slump test measure?
💡 Hint: Think about the ease of placement.
Why is compressive strength tested at 7 and 28 days?
💡 Hint: Consider the curing process of concrete.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of the slump test?
💡 Hint: Consider what ease of placement means.
True or False: Compressive strength tests should only be performed at 28 days.
💡 Hint: Think about early strength development.
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Challenge Problems
Push your limits with advanced challenges
You are tasked with designing a concrete mix for a project but your initial test shows a slump of only 25mm when 100mm is ideal. Discuss possible adjustments and their implications.
💡 Hint: Be mindful of the water-cement ratio in your adjustments.
During compressive strength testing, if you unexpectedly find a cube failing at 20 MPa while the target is 30 MPa, what might be the causes, and how would you address them?
💡 Hint: Think about common issues in material selection or mixing.
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