Practice Workability Adjustment (18.7.2) - Mix Design – Principles and Influencing Factors

Practice: Workability Adjustment

Lesson 18.7.2Mix Design – Principles and Influencing Factors

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9 questions

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6 sample questions

Question 1.
What is workability in the context of concrete?
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Think about how concrete behaves during mixing.
Question 2.
Name one method to increase the workability of concrete.
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It's an admixture that enhances flow.
3Question 3.
What is the easiest way to increase the workability of concrete?
- Add more gravel
- Add superplasticizer
- Add more cement
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Focus on additives that enhance flow.
4Question 4.
True or False: Adding too much water increases the strength of concrete.
- True
- False
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Think critically about water's effects on concrete.
Question 5.
You are tasked to prepare a concrete mix for a structural sandwich panel. It needs maximum strength but must be workable enough for placement without segregation. Propose a balanced mixture adjust plan.
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Think about how the structural requirements affect your mix.
Question 6.
During a hot summer day, you've mixed concrete that is too workable and prone to bleeding. Outline a strategy for adjustments to maintain the necessary strength.
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Contemplate what happens in high temperature conditions for concrete.

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