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ARAS Structural Design of Reinforced Concrete Chapter 1 Quiz

14 Questions

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ARAS Structural Design of Reinforced Concrete Chapter 1 Quiz

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Questions and Answers

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?

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?

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?

Steel reinforcement Signup and view all the answers

Why is reinforced concrete usually the only economical material available for footings, floor slabs, basement walls, and similar applications?

It has considerable compressive strength per unit cost Signup and view all the answers

What is a special feature of concrete mentioned in the text?

Ability to be cast into a variety of shapes Signup and view all the answers

What is a disadvantage of concrete mentioned in the text?

Low tensile strength Signup and view all the answers

What is the purpose of admixtures in concrete?

Improve the performance of concrete Signup and view all the answers

Which type of cement is used for concretes that are to be exposed to high concentrations of sulfate?

Type V cement Signup and view all the answers

What is the common, all-purpose cement used for general construction work?

Type I cement Signup and view all the answers

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?

Accelerating admixtures Signup and view all the answers

What type of cement has a lower heat of hydration than Type I cement and can withstand some exposure to sulfate attack?

Type II cement Signup and view all the answers

What is required to hold the concrete in place until it hardens sufficiently?

Forms Signup and view all the answers

What determines the compressive strength of concrete?

$28$-day-old concrete cylinders Signup and view all the answers