Enrol to start learning
Reading is open to everyone. Enrolling is free, and it is what unlocks the audio lessons, practice tests and progress tracking.
6. Interaction Between Durability, Permeability & Chemical Attack
This section
Practice test
11 questions on this section. Wrong answers show you what to read again.
Sign up to take itWhole chapter
Revision test
Mixed questions from across the chapter. Your answers get marked.
Sign up to take itQuick
Flashcard drill
3 cards from this lesson. Good the night before a test.
Try these first
- 1.
Define durability in concrete.
Hint
Think about how long a material lasts.
- 2.
What is permeability?
Hint
Consider fluid movement through sponge.
- 3.
What is the primary reason high permeability harms concrete?
- It makes the concrete weaker
- It allows aggressive agents to enter
- It reduces the aesthetic value
Hint
Consider what happens when materials penetrate surfaces.
- 4.
True or False: Low water-cement ratio contributes to higher durability.
- True
- False
Hint
Consider how mixing affects strength.
- 5.
Propose a mix design strategy to improve the durability of concrete in a marine environment.
Hint
Consider the environmental aggressors present.
- 6.
Evaluate the risks of carbonation in a high-rise building constructed with poor curing practices.
Hint
Think about the long-term impacts of environmental exposure.
Exercises
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting
4 more questions available
Enrol freeQuiz
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting
1 more question available
Enrol freeChallenge Problems
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting