Podcast
Questions and Answers
What are admixtures in concrete used for?
What are admixtures in concrete used for?
- To increase the water content of concrete
- To modify the properties of fresh or hardened concrete (correct)
- To replace fine aggregates
- To change the color of concrete
What is the primary benefit of using admixtures in concrete?
What is the primary benefit of using admixtures in concrete?
- They make concrete easier to transport
- They make concrete more resistant to fire
- They make concrete less expensive
- They improve the consistency of concrete strength (correct)
What are admixtures added to concrete, mortar or paste for?
What are admixtures added to concrete, mortar or paste for?
- To make them less expensive
- To strengthen their properties (correct)
- To change their color
- To weaken their properties
What is the purpose of adding admixtures to concrete, mortar or paste?
What is the purpose of adding admixtures to concrete, mortar or paste?
Which type of admixture is most commonly used in advanced countries?
Which type of admixture is most commonly used in advanced countries?
When can admixtures be added to concrete?
When can admixtures be added to concrete?
Which type of admixture is commonly used as a water reducer?
Which type of admixture is commonly used as a water reducer?
What are the most common chemical admixtures?
What are the most common chemical admixtures?
When are admixtures necessary?
When are admixtures necessary?
When are admixtures considered necessary for concrete?
When are admixtures considered necessary for concrete?
Which of the following is NOT a component of concrete?
Which of the following is NOT a component of concrete?
Flashcards are hidden until you start studying
Study Notes
- Admixtures have been used in concrete for a long time.
- Water reducers or plasticizers and superplasticizers are recent types of admixtures.
- Plasticizers were not popular in India until the 1980s due to lack of awareness and education.
- Indian companies started manufacturing chemical admixtures in collaboration with international companies.
- The use of admixtures has been promoted by the use of ready mix concrete in recent times.
- The effect of admixtures can be difficult to predict due to various factors.
- Change in cement brand, aggregate grading, mix proportions, and richness of mix can alter concrete properties.
- Admixtures can affect more than one property of concrete.
- Using more than one admixture can be difficult to predict.
- Caution must be exercised in selecting and predicting the effect of admixtures in concrete.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
