This set of Concrete Technology Multiple Choice Questions & Answers (MCQs) focuses on HPC QUIZ
HPC QUIZ with Answer
- It is strength and permeability.
a) High, high
b) Low, low
c) High, low
d) Low, high
Answer: c
Explanation: It is specifically chosen so as to have particularly appropriate properties for the expected use of the structure such as high strength and low permeability.
- High Performance concrete works out to be economical.
a) True
b) False
Answer: a
Explanation: High Performance concrete works out to be economical, even though its initial cost is high.
- HPC is not used in high span bridges.
a) True
b) False
Answer: b
Explanation: Major applications of high-performance concrete in the field of Civil Engineering constructions have been in the areas of long-span bridges, high-rise buildings or structures, highway pavements, etc.
- Concrete having 28- days’ compressive strength in the range of 60 to 100 MPa.
a) HPC
b) VHPC
c) OPC
d) HSC
Answer: a
Explanation: High Performance Concrete having 28- days’ compressive strength in the range of 60 to 100 MPa.
- Concrete having 28-days compressive strength in the range of 100 to 150 MPa.
a) HPC
b) VHPC
c) OPC
d) HSC
Answer: b
Explanation: Very high performing Concrete having 28-days compressive strength in the range of 100 to 150 MPa.
High Performance HPC QUIZ
- High-Performance Concrete is __ as compared to Normal Strength Concrete.
a) Less brittle
b) Brittle
c) More brittle
d) Highly ductile
Answer: c
Explanation: High-Performance Concrete is more brittle as compared to Normal Strength Concrete (NSC), especially when high strength is the main criteria.
- The choice of cement for high-strength concrete should not be based only on mortar-cube tests but it should also include tests of compressive strengths of concrete at _ days.
a) 28, 56, 91
b) 28, 60, 90
c) 30, 60, 90
d) 30, 45, 60
View Answer
Answer: a
Explanation: The choice of cement for high-strength concrete should not be based only on mortar-cube tests but it should also include tests of compressive strengths of concrete at 28, 56, and 91 days.
- For high-strength concrete, a cement should produce a minimum 7-days mortar-cube strength of approximately _ MPa.
a) 10
b) 20
c) 30
d) 40
Answer: c
Explanation: For high-strength concrete, a cement should produce a minimum 7-days mortar-cube strength of approximately 30 MPa.
- __ mm nominal maximum size aggregates gives optimum strength.
a) 9.5 and 10.5
b) 10.5 and 12.5
c) 9.5 and 12.5
d) 11.5 and 12.5
Answer: c
Explanation: Many studies have found that 9.5 mm to 12.5 mm nominal maximum size aggregates gives optimum strength.
- Due to low w/c ratio _
a) It doesn’t cause any problems
b) It causes problems
c) Workability is easy
d) Strength is more
Answer: b
Explanation: Due to the low w/c ratio, it causes problems so superplasticizers are used.