Mix Design Principles - Problem Set
Q. What is the main advantage of using steel reinforcement in concrete structures?
-
A.
Increases thermal resistance
-
B.
Enhances tensile strength
-
C.
Reduces weight of the structure
-
D.
Improves aesthetic value
Solution
Steel reinforcement is used to enhance the tensile strength of concrete, which is weak in tension.
Correct Answer: B — Enhances tensile strength
Learn More →
Q. What is the main function of coarse aggregates in concrete?
-
A.
To provide thermal insulation
-
B.
To reduce shrinkage
-
C.
To enhance the compressive strength
-
D.
To improve aesthetic appearance
Solution
Coarse aggregates provide bulk and strength to concrete, contributing significantly to its compressive strength.
Correct Answer: C — To enhance the compressive strength
Learn More →
Q. What is the purpose of using a retarding admixture in concrete?
-
A.
To speed up the setting time
-
B.
To delay the setting time
-
C.
To increase the strength
-
D.
To improve workability
Solution
Retarding admixtures are used to delay the setting time of concrete, which is beneficial in hot weather conditions.
Correct Answer: B — To delay the setting time
Learn More →
Q. Which material is primarily used for making bricks?
-
A.
Cement
-
B.
Clay
-
C.
Sand
-
D.
Lime
Solution
Bricks are primarily made from clay, which is molded and then fired to achieve strength.
Correct Answer: B — Clay
Learn More →
Q. Which of the following is NOT a type of concrete admixture?
-
A.
Plasticizer
-
B.
Retarder
-
C.
Accelerator
-
D.
Reinforcer
Solution
Reinforcer is not a type of concrete admixture; it refers to materials like steel that are added to enhance strength.
Correct Answer: D — Reinforcer
Learn More →
Q. Which type of aggregate is preferred for high-performance concrete?
-
A.
Natural aggregates
-
B.
Recycled aggregates
-
C.
Lightweight aggregates
-
D.
Heavyweight aggregates
Solution
Natural aggregates are typically preferred for high-performance concrete due to their consistent quality and properties.
Correct Answer: A — Natural aggregates
Learn More →
Showing 1 to 6 of 6 (1 Pages)
