High Performance Concrete (HPC) is characterised by:
Choose the correct answer
High water-cement ratio for easy placement
Very high strength (fck > 60 MPa), very low w/c, use of silica fume and superplasticiser, low permeability
No admixtures and high workability
Low cement content only
Correct Answer
B. Very high strength (fck > 60 MPa), very low w/c, use of silica fume and superplasticiser, low permeability
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HPC: fck > 60 MPa (some define > 40 MPa), low w/c ratio (0.25–0.35), use of silica fume and superplasticiser, very low permeability (< 1000 C RCPT), high durability. Used for: long-span bridges, high-rise buildings, aggressive environments. Requires careful mix design, quality control, and curing.
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