Properties of Concrete and Steel - Real World Applications
Q. What is the primary benefit of using high-performance concrete?
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A.
Lower cost
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B.
Higher durability and strength
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C.
Easier to work with
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D.
Faster curing time
Solution
High-performance concrete offers higher durability and strength, making it suitable for demanding applications.
Correct Answer: B — Higher durability and strength
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Q. What is the role of fly ash in concrete?
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A.
To increase the weight of concrete
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B.
To improve workability and reduce permeability
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C.
To enhance color
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D.
To act as a bonding agent
Solution
Fly ash improves workability and reduces permeability in concrete, contributing to its overall performance.
Correct Answer: B — To improve workability and reduce permeability
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Q. What is the typical water-cement ratio for achieving good concrete strength?
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A.
0.1 to 0.2
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B.
0.3 to 0.4
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C.
0.5 to 0.6
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D.
0.7 to 0.8
Solution
A water-cement ratio of 0.5 to 0.6 is typically recommended to achieve good concrete strength while maintaining workability.
Correct Answer: C — 0.5 to 0.6
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Q. Which property of steel makes it suitable for use in reinforced concrete?
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A.
Low thermal expansion
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B.
High tensile strength
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C.
Corrosion resistance
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D.
Lightweight
Solution
High tensile strength is a key property of steel that makes it suitable for reinforcing concrete, allowing it to withstand tensile forces.
Correct Answer: B — High tensile strength
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Q. Which type of brick is known for its high compressive strength and durability?
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A.
Clay Brick
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B.
Concrete Brick
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C.
Fly Ash Brick
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D.
Sand Lime Brick
Solution
Clay bricks are known for their high compressive strength and durability, making them a popular choice in construction.
Correct Answer: B — Concrete Brick
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Q. Which type of steel is commonly used for reinforcing bars (rebar) in concrete?
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A.
Mild Steel
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B.
High Carbon Steel
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C.
Stainless Steel
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D.
Alloy Steel
Solution
Mild Steel is commonly used for reinforcing bars (rebar) due to its good ductility and weldability.
Correct Answer: A — Mild Steel
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