250+ TOP MCQs on Ultra High Strength Concrete and Answers

Concrete Technology Multiple Choice Questions on “Ultra High Strength Concrete”.

1. Ultra-High Performance Concrete (UHPC), also known as ______
a) Active powder concrete
b) NPC
c) Reactive powder concrete
d) High Strength concrete
Answer: c
Clarification: Ultra-High Performance Concrete (UHPC), also known as reactive powder concrete (RPC), is a high-strength, ductile material.

2. The material used for UHPC provides compressive strengths up to __________
a) 17000 psi
b) 20000 psi
c) 25000 psi
d) 29000 psi
Answer: d
Clarification: The material provides compressive strengths of up to 29000 pounds per square inch.

3. The material used for UHPC provides flexural strengths up to _________
a) 2000 psi
b) 5000 psi
c) 7000 psi
d) 10000 psi
Answer: c
Clarification: The material used for UHPC provides flexural strengths up to 7000 pounds per square inch.

4. Range of modulus of elasticity for UHPC ___________
a) 30-35 GPa
b) 35-40 GPa
c) 40-45 GPa
d) 45-50 GPa
Answer: d
Clarification: 45-50 GPa or 6500 to 7300 ksi is the range of modulus of elasticity for ultra-high performance concrete.

5. What is the compressive strength for UHPC?
a) 10-20 MPa
b) 60-100 MPa
c) 100-150 MPa
d) >150 MPa
Answer: c
Clarification: 28 days compressive strength for UHPC is 100-150MPa and for HPC, it’s 60-100 MPa.

6. What is the percentage of water by weight in UHPC?
a) 28.5
b) 4.4
c) 1.2
d) 6.2
Answer: b
Clarification: 4.4 is the percentage of water by weight in UHPC according to the typical composition of Ductal.

7. What is the percentage of PC by weight in UHPC?
a) 28.5
b) 4.4
c) 1.2
d) 6.2
Answer: a
Clarification: 28.5 is the percentage of PC by weight in UHPC according to the typical composition of Ductal.

8. What is the percentage of steel fibre by weight in UHPC?
a) 28.5
b) 4.4
c) 1.2
d) 6.2
Answer: d
Clarification: 6.5 is the percentage of steel fibre by weight in UHPC according to the typical composition of Ductal.

9. What is the percentage of the accelerator by weight in UHPC?
a) 28.5
b) 4.4
c) 1.2
d) 6.2
Answer: c
Clarification: 1.2 is the percentage of the accelerator by weight in UHPC according to typical composition of Ductal.