High performance concrete (HPC) is a type of concrete mixture that possesses high workability, high strength, low permeability, and resistance to chemical attack. HPC uses carefully selected, high-quality ingredients and optimized mixture designs to produce concrete with a low water-cement ratio between 0.20 to 0.45. Plasticizers are used to make HPC fluid and workable. HPC exceeds the properties and constructability of normal concrete. It has been used in tunnels, bridges, tall buildings, shotcrete repair, poles, parking garages, and agricultural applications due to its strength, durability, and high modulus of elasticity.

1. UNIT-IV
HIGH PERFORMANCE COCNRETE
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2. High Performance Concrete (HPC)
High Performance Concrete (HPC) is a type of concrete mixture which possess high
workability, high strength, high modulus of elasticity, high density, high dimensional
stability, low permeability and resistance to chemical attack.
• High-performance concretes are made with carefully selected high-quality
ingredients and optimized mixture designs; these are batched, mixed, placed,
compacted and cured to the highest industry standards.
• Typically, such concretes will have a low water-cementing materials ratio of 0.20 to
0.45. Plasticizers are usually used to make these concretes fluid and workable.
• High-performance concrete (HPC) exceeds the properties and constructability of
normal concrete. Normal and special materials are used to make these specially
designed concretes that must meet a combination of performance requirements.
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3. High Performance Concrete (HPC)
Materials used in HPC
Also includes water,
fine aggregates and
coarse aggregates.
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4. High Performance Concrete (HPC)
Methods of producing HPC
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5. High Performance Concrete (HPC)
Methods of producing HPC (contd….)
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6. High Performance Concrete (HPC)
Methods of producing HPC (contd….)
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7. High Performance Concrete (HPC)
Properties of HPC
High-performance concrete characteristics are developed for particular applications
and environments; some of the properties that may be required include:
• High strength
• High early strength
• High modulus of elasticity
• High abrasion resistance
• High durability and long life in severe environments
• Low permeability and diffusion
• Resistance to chemical attack
• High resistance to frost and deicer scaling damage
• Toughness and impact resistance
• Volume stability
• Ease of placement
• Compaction without
segregation
• Inhibition of bacterial and mold
growth
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8. High Performance Concrete (HPC)
Applications of HPC
• High-performance concrete has been primarily used in tunnels, bridges, and tall
buildings for its strength, durability, and high modulus of elasticity.
• It has also been used in shotcrete repair, poles, parking garages, and agricultural
applications.
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9. High Performance Concrete (HPC)
Strength
• In practice, concrete with compressive strength less than 50 Mpa is regarded as
Normal Strength Concrete (NSC), Wile high Strength Concrete should possess
compressive strength more than 50 Mpa.
• Several concretes have achieved compressive strength more than 200MPa. Such
concrete is treated as HPC and Ultra high strength concrete.
• Addition of admixtures not only improves concrete strength, but also improves
ductility and durability of concrete.
Durability
• Majority of concrete durability problems are related to the resistance of concrete
to permeation of water and chemical ions. Such problems include corrosion of steel
reinforcement, freeze-thaw damage and alkaline-silica reaction.
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10. High Performance Concrete (HPC)
• The permeability of concrete is a key factor influencing the durability of concrete.
Concrete permeability is dependent on permeability of each constituent material
and its geometric arrangement.
• The permeability of cement paste is primarily related to pore structure, which
includes porosity, pore size and connectivity. Pore structure is a function of water
to cement ratio and the degree of hydration.
Types of HPC
1. High early strength concrete
2. High strength concrete
3. High durability concrete
4. Self compacting concrete
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11. High Performance Concrete (HPC)
QUESTION BANK
1. Define High Performance Concrete and mention its applications.
2. What are the constituent materials of HPC?
3. Mention the properties of HPC.
4. Explain strength and durability aspect of HPC.
5. What are the methods to achieve HPC?
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