20.1 - Issue: Slump too low
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Practice Questions
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What does a slump test measure?
💡 Hint: Think about what is meant by 'workability'.
Name one cause of low slump.
💡 Hint: Consider what could make a mix stiff.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary measure of a slump test?
💡 Hint: Think about what workability means in concrete.
True or False: Low slump indicates better workability.
💡 Hint: Consider the flow of the concrete.
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Challenge Problems
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A construction site receives a batch of concrete with a measured slump of 20 mm when a slump of 75-100 mm is expected. Discuss the potential consequences on workability and structural integrity.
💡 Hint: Consider how proper compaction affects strength.
Given that excessive fines lead to low slump, propose a strategy to ensure proper grading of aggregates in mix design.
💡 Hint: Refer to aggregate grading tables in the IS codes for guidance.
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