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Concrete Properties and Characteristics

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Questions and Answers

What is measured in terms of compressive strength in concrete?

Workability

The force the concrete can withstand when squeezed (correct)

Durability

Uniformity

What is the purpose of the Slump Test in concrete?

To test the permeability of the concrete

To establish the durability of the concrete

To determine the strength of the concrete core

To determine the workability of the concrete (correct)

How many cubes are needed for the Permeability Test?

Five

Six

One

Three (correct)

What is the purpose of the Ultrasonic Pulse Velocity Test?

To assess the quality of the concrete (B) Signup and view all the answers

What is the duration required for taking the cubes for the Permeability Test?

28 days (B) Signup and view all the answers

What is the purpose of the Pull-out Test?

To assess the quality of the concrete (A) Signup and view all the answers

What type of cement is used in massive concrete structures such as gravity dams?

Type IV cement (B) Signup and view all the answers

What is the primary purpose of water in concrete?

To facilitate the chemical reaction that causes cement to harden (B) Signup and view all the answers

What type of cement provides high strengths at an early age?

Type III cement (D) Signup and view all the answers

What is the primary function of aggregates in concrete?

To provide strength and durability (B) Signup and view all the answers

What type of cement is used in drainage structures where sulfate attack is a concern?

Type II cement (B) Signup and view all the answers

What are admixtures used to modify in concrete?

The setting time, workability, and strength (C) Signup and view all the answers

What are the main components of concrete?

Cement, aggregate, water, and additives (D) Signup and view all the answers

What type of cement is commonly used for all types of cement uses?

Type I (B) Signup and view all the answers

What is the purpose of reinforcing steel in reinforced concrete?

To resist tensile stresses (C) Signup and view all the answers

What is the primary binding material in lime concrete?

Lime (C) Signup and view all the answers

What happens to concrete over time?

It hardens to form a strong and versatile substance (B) Signup and view all the answers

What is the purpose of water in concrete mixing?

To get a proper consistency (B) Signup and view all the answers