7.1.1 - Workability
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Practice Questions
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What is workability in concrete?
💡 Hint: Think about how easy it is to handle wet clay compared to dry.
Name one factor that influences the workability of concrete.
💡 Hint: Consider how adding more water affects playdough.
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Interactive Quizzes
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What is the main purpose of workability in concrete?
💡 Hint: Think about how you would want to handle wet sand.
True or False: Higher water-cement ratios always contribute positively to strength.
💡 Hint: Consider how adding too much water can affect density.
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Challenge Problems
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A construction site uses a concrete mix with a water-cement ratio of 0.75. During testing, the slump is measured at 200 mm. Assess whether this is desirable for a residential application, and suggest adjustments to improve workability if necessary.
💡 Hint: Think about how high workability affects strength.
In conditions of high ambient temperature, a concrete batch is experiencing quick slump loss. Outline steps to mitigate this issue and maintain desired workability.
💡 Hint: Consider the relation between temperature and setting time.
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