Practice Setting Time Comparison Test (6.5.3) - Water – Requirements and Impurities

Practice: Setting Time Comparison Test

Lesson 6.5.3Water – Requirements and Impurities

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the acceptable deviation in setting time when using different types of water for cement?
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Think about how much time can differ from distilled water.
Question 2.
Why is distilled water used as a comparison in the setting time test?
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Consider the purity factor in your answer.
3Question 3.
What is the maximum acceptable deviation in setting time for a water test?
- 20 minutes
- 30 minutes
- 45 minutes
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Remember the standard for comparison.
4Question 4.
True or False: The setting time of cement can be influenced by impurities in the water.
- True
- False
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Think about how impurities affect chemical reactions.
Question 5.
You are conducting a setting time test with water collected from a nearby river. The initial setting time was found to be 40 minutes longer than distilled water. What steps would you take to ensure that this water is suitable for construction?
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Evaluate the source of the water and its properties.
Question 6.
You find that your concrete mix with test water has a setting time of 1 hour when the distilled water sets in 30 minutes. Discuss potential reasons for this and ways to investigate.
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Look into all aspects of the water’s chemical makeup.

5 more questions in this section. Enroll free to practise them all.