Podcast
Questions and Answers
What is the role of steel in reinforced concrete?
What is the role of steel in reinforced concrete?
- It improves workability
- It changes the time of hardening
- It provides compressive strength
- It provides the tensile strength lacking in concrete (correct)
Which characteristic of concrete can be altered by adding admixtures?
Which characteristic of concrete can be altered by adding admixtures?
- Long service life
- Workability and durability (correct)
- Resistance to fire and water
- Compressive strength
What is one of the advantages of reinforced concrete structures mentioned in the text?
What is one of the advantages of reinforced concrete structures mentioned in the text?
- Limited service life
- High flexibility
- Low maintenance material (correct)
- Economical for roofing
What makes reinforced concrete structures resistant to the actions of fire and water?
What makes reinforced concrete structures resistant to the actions of fire and water?
Why is reinforced concrete usually the only economical material available for footings, floor slabs, basement walls, and similar applications?
Why is reinforced concrete usually the only economical material available for footings, floor slabs, basement walls, and similar applications?
What is a special feature of concrete mentioned in the text?
What is a special feature of concrete mentioned in the text?
What is a disadvantage of concrete mentioned in the text?
What is a disadvantage of concrete mentioned in the text?
What is the purpose of admixtures in concrete?
What is the purpose of admixtures in concrete?
Which type of cement is used for concretes that are to be exposed to high concentrations of sulfate?
Which type of cement is used for concretes that are to be exposed to high concentrations of sulfate?
What is the common, all-purpose cement used for general construction work?
What is the common, all-purpose cement used for general construction work?
What type of admixture is used to produce a concrete with a strength about twice that of Type I cement within the first 24 hours?
What type of admixture is used to produce a concrete with a strength about twice that of Type I cement within the first 24 hours?
What type of cement has a lower heat of hydration than Type I cement and can withstand some exposure to sulfate attack?
What type of cement has a lower heat of hydration than Type I cement and can withstand some exposure to sulfate attack?
What is required to hold the concrete in place until it hardens sufficiently?
What is required to hold the concrete in place until it hardens sufficiently?
What determines the compressive strength of concrete?
What determines the compressive strength of concrete?
