Advanced High-Performance Concrete
Technology for Modern Construction
Engineering – Comprehensive 2026 Edition
1. High-performance concrete (HPC) is primarily designed to have:
a) High workability only
b) Enhanced strength, durability, and workability
c) Only high compressive strength
d) Only low permeability
Rationale: HPC is engineered not just for strength but also
durability, low permeability, and workability for long-term
performance.
2. The typical water-to-cement ratio for HPC is:
a) 0.60–0.70
b) 0.25–0.40
c) 0.45–0.55
d) 0.50–0.65
Rationale: Lower water-cement ratios improve both strength
and durability in HPC.
3. Which of the following is a common mineral admixture in HPC?
a) Lime
b) Silica fume
c) Sand
d) Clay
, Rationale: Silica fume enhances particle packing and strength,
and reduces permeability.
4. The main purpose of superplasticizers in HPC is to:
a) Increase setting time
b) Reduce water content while maintaining workability
c) Reduce cement content
d) Increase aggregate size
Rationale: Superplasticizers allow HPC to achieve low water-
cement ratios without compromising workability.
5. Which curing method is most effective for HPC?
a) Air curing
b) Sunlight exposure
c) Continuous moist curing
d) Quick drying
Rationale: Proper moisture curing ensures hydration continues,
crucial for HPC strength and durability.
6. High-strength concrete is defined as concrete having compressive
strength above:
a) 20 MPa
b) 30 MPa
c) 50 MPa
d) 100 MPa
Rationale: HPC often exceeds 50 MPa, significantly higher than
normal concrete.
7. The durability of HPC is primarily enhanced by:
a) Coarse aggregates
b) Low permeability
, c) High water content
d) Color additives
Rationale: Low permeability limits water and aggressive
chemical ingress, improving durability.
8. Fly ash in HPC primarily serves to:
a) Increase slump
b) Decrease cement content only
c) Improve workability and long-term strength
d) Act as a filler for aggregates
Rationale: Fly ash reduces heat of hydration and enhances
workability and durability.
9. Silica fume is added to HPC to:
a) Accelerate setting
b) Increase compressive strength and reduce permeability
c) Replace coarse aggregates
d) Reduce cement content
Rationale: Silica fume fills voids and reacts with calcium
hydroxide to strengthen concrete.
10. Self-compacting concrete is a type of HPC designed to:
a) Require vibration
b) Reduce strength
c) Flow under its own weight without segregation
d) Increase water content
Rationale: Self-compacting concrete eliminates the need for
mechanical compaction while maintaining uniformity.
11. The primary factor affecting early-age cracking in HPC is:
a) Aggregate color
Technology for Modern Construction
Engineering – Comprehensive 2026 Edition
1. High-performance concrete (HPC) is primarily designed to have:
a) High workability only
b) Enhanced strength, durability, and workability
c) Only high compressive strength
d) Only low permeability
Rationale: HPC is engineered not just for strength but also
durability, low permeability, and workability for long-term
performance.
2. The typical water-to-cement ratio for HPC is:
a) 0.60–0.70
b) 0.25–0.40
c) 0.45–0.55
d) 0.50–0.65
Rationale: Lower water-cement ratios improve both strength
and durability in HPC.
3. Which of the following is a common mineral admixture in HPC?
a) Lime
b) Silica fume
c) Sand
d) Clay
, Rationale: Silica fume enhances particle packing and strength,
and reduces permeability.
4. The main purpose of superplasticizers in HPC is to:
a) Increase setting time
b) Reduce water content while maintaining workability
c) Reduce cement content
d) Increase aggregate size
Rationale: Superplasticizers allow HPC to achieve low water-
cement ratios without compromising workability.
5. Which curing method is most effective for HPC?
a) Air curing
b) Sunlight exposure
c) Continuous moist curing
d) Quick drying
Rationale: Proper moisture curing ensures hydration continues,
crucial for HPC strength and durability.
6. High-strength concrete is defined as concrete having compressive
strength above:
a) 20 MPa
b) 30 MPa
c) 50 MPa
d) 100 MPa
Rationale: HPC often exceeds 50 MPa, significantly higher than
normal concrete.
7. The durability of HPC is primarily enhanced by:
a) Coarse aggregates
b) Low permeability
, c) High water content
d) Color additives
Rationale: Low permeability limits water and aggressive
chemical ingress, improving durability.
8. Fly ash in HPC primarily serves to:
a) Increase slump
b) Decrease cement content only
c) Improve workability and long-term strength
d) Act as a filler for aggregates
Rationale: Fly ash reduces heat of hydration and enhances
workability and durability.
9. Silica fume is added to HPC to:
a) Accelerate setting
b) Increase compressive strength and reduce permeability
c) Replace coarse aggregates
d) Reduce cement content
Rationale: Silica fume fills voids and reacts with calcium
hydroxide to strengthen concrete.
10. Self-compacting concrete is a type of HPC designed to:
a) Require vibration
b) Reduce strength
c) Flow under its own weight without segregation
d) Increase water content
Rationale: Self-compacting concrete eliminates the need for
mechanical compaction while maintaining uniformity.
11. The primary factor affecting early-age cracking in HPC is:
a) Aggregate color
