1. HIGH PERFORMANCE CONRCETE

2. High-Performance Concrete
Definition:-
HPC is a concrete that has been designed to be
more durable and if necessary, stronger than
conventional concrete.
HPC mixtures are essentially composed of the
same materials as conventional concrete
mixtures. But the proportions are designed or
engineered to provide the strength and durability
needed for the structural and environmental
requirements of the project.

3. High-Value Concrete
High value generally associated with High-Performance.
What is High-Performance? High-Early Strength Concrete High-Strength Concrete High-Durability Concrete Self-Consolidating Concrete
High density concrete.

4. Characteristics of High-Performance Concrete
High early strength
High strength
High modulus of elasticity
High abrasion resistance
High durability and long life in surrounding environments
Low permeability
Resistance to chemical attack

5. Characteristics of High-Performance Concrete
High resistance to frost damage
Toughness and impact resistance
Volume stability
Ease of placement
Compaction without segregation
Inhibition of bacterias.

6. Materials Used in High- Performance Concrete
Primary Contribution/Desired Property
Portland cement
Cementing material / Durability
Blended cement
Fly ash / Slag / Silica fume
Cementing material /
Durability /
High strength
Superplasticizers
Flowability
High-range water reducers
Reduce water-cement ratio
Hydration control admix.
Control setting

7. Materials Used in High- Performance Concrete
Primary Contribution/Desired Property
Retarders
Control setting
Accelerators
Accelerate setting
Corrosion inhibitors
Control steel corrosion
Water reducers
Reduce cement and water content
Shrinkage reducers
Reduce shrinkage
Optimally graded aggr.
Improve workability/reduce paste
Polymer
Durability

8. Selected Properties of High- Performance Concrete
Property
Criteria that may be specified
High Strength
to 91 days
High early Comp. Strength
hrs or 1-3 days
High early Flexural Strength
hrs or 1-3 days
Low Absorption
2% to 5%
Abrasion Resistance
0-1 mm depth of wear

9. High- Performance Concrete used for -
Long Span Bridges
Bridge-decks, Pavements, and Parking Structures
Skyscrapers buildings

10. High- Performance Concrete
J.J Flyover at Mumbai where High Performance concrete 75MPa was used for the first time in INDIA in 2002

11. High- Performance Concrete
Some well known structures where High Performance Concrete is used Two Prudential Plaza CHICAGO 1989 Strength-82.7MPa Height of building -300m

12. High- Performance Concrete
311 South Wacker Drive Chicgo 1989 Strength-82.7MPa Height of building -300m

13. High- Performance Concrete
Society Centert Cleveland 1991 Strength-82.7MPa Height of building -250m

14. High- Performance Concrete
Trump Palace New York City 1991 Strength-82.2MPa Height of Buiding-200m

15. High- Performance Concrete
Dain Bosworth Tower Minneapolis 1991 Strength – 96.5MPa Height of Building- 175m

16. High- Performance Concrete
225 West Wacker Drive Chicago 1988 Strength – 96.5MPa Height of Building – 100m

17. High- Performance Concrete
Gateway Tower Seattle 1990 Strength MPa Height of Building -225m

18. High- Performance Concrete
Two Union Square Seattle 1988 Strength - 131MPa Height of Building-250m

19. About HPC ……..
1. High Performance Concrete The American Concrete Institute (ACI) defines high-performance concrete as concrete meeting special combinations of performance and uniformity requirements that cannot always be achieved routinely when using conventional constituents and normal mixing, placing and curing practices. A high-performance concrete is something which demands much higher performance from concrete as compared to performance expected from routine concrete.

20. 2. Typical performance parameters of High-Performance Concrete:-
The High Performance Concrete is normally designed for parameters (one or more) falling under the Strength criterion or/and under the Durability criterion,  as tabulated below:-
Strength Criteria
Durability Criteria
Compressive Strength
Modulus of Elasticity
Shrinkage
Abrasion
Creep
Specification for High Performance Concrete often requires the concrete to meet several criteria.

21. 3. Degree of quality control requirement for High Performance Concrete:- High-performance concretes are also more sensitive to changes in constituent material properties than conventional concretes. This means that a greater degree of quality control is required for the successful production of high-performance concrete. 4. High Performance Concrete obtained in practice:- By careful selection of raw materials (including chemical/mineral admixtures) & appropriate mix design to achieve the desired performance objectives. Most high-performance concretes have a high cementitious content and a water-cementitious material ratio of 0.40 or less.

22. 5.Benefits of High Performance Concrete:- High Performance Concrete (HPC) is designed to provide several benefits in the construction of concrete structures as tabulated below: Performance Benefits Cost & Other Benefits ease of placement and consolidation without affecting strength early high strength toughness volume stability longer life in surrounding environments less material reduced maintenance extended life cycle aesthetics

23. Conclusion :-
It is best for use as it gives best properties but HPC becomes uneconomical for ordinary use.
Hence we conclude that , this type of concrete can be used for all Important structures where high values are necessary.

24. Thank You