Practice Importance (18.1) - Workability of Fresh Concrete

Practise this section

8 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is hydration control?
Show hintHide hint
Think about what happens when concrete gets too hot.
Question 2.
Name one cooling method for concrete.
Show hintHide hint
Consider ways to keep the mix temperature down.
3Question 3.
What is the main concern with uncontrolled hydration?
- Cracking
- Color change
- Increased cost
Show hintHide hint
Think about how heat affects solid materials.
4Question 4.
True or False: Supplementary cementitious materials help to reduce heat during hydration.
- True
- False
Show hintHide hint
Remember their role in the mix.
Question 5.
Consider a concrete pour on a hot day. Describe the steps you would take to ensure proper hydration control.
Show hintHide hint
Think about how temperature affects your work environment.
Question 6.
In what ways can the use of hydration control admixtures influence the setting time of concrete?
Show hintHide hint
Focus on how admixtures interact with the water-to-cement ratio.

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