High-performance fiber-reinforced cementitious composites (HPFRCCs) are a group of fiber-reinforced cement-based composites which possess the unique ability to flex and self-strengthen before fracturing. This particular class of concrete was developed with the goal of solving the structural problems inherent with today’s typical concrete, such as its tendency to fail in a brittle manner under excessive loading and its lack of long-term durability. Because of their design and composition, HPFRCCs possess the remarkable ability to strain harden under excessive loading. In layman’s terms, this means they have the ability to flex or deform before fracturing, a behavior similar to that exhibited by most metals under tensile or bending stresses. Because of this capability, HPFRCCs are more resistant to cracking and last considerably longer than normal concrete. Another extremely desirable property of HPFRCCs is their low density. A less dense, and hence lighter material means that HPFRCCs could eventually require much less energy to produce and handle, deeming them a more economic building material. Because of HPFRCCs’ lightweight composition and ability to strain harden, it has been proposed that they could eventually become a more durable and efficient alternative to typical concrete. HPFRCCs are simply a subcategory of ductile fiber-reinforced cementititous composites (DFRCCs) that possess the ability to strain harden under both bending and tensile loads, not to be confused with other DFRCCs that only strain harden under bending loads.

1. MEKAPATI RAJAMOHAN REDDY INSTITUTE
OF TECHNOLOGY & SCIENCE
TECHINICAL SEMINAR
ON
HIGH PERFORMANCE CONCRETE
PRESENTED BY
K.SWATHI
14L41A0103

2. CONTENTS
 Introduction
 What is High Performance concrete?
 Components/Ingredients of HPC.
 Methods for achieving High performance
 Characteristic of HPC.
 Stress-Strain Behaviour
 Advantages.
 Disadvantages.
 Application.
 Case study.
 Conclusion.

3. INTRODUCTION
 Concrete is the most widely used Construction material in India with annual
Consumption exceeding 100 million cubic meters .
 High performance concrete is a concrete in which certain characteristics are
Developed for a particular application and environment ,so that it will give
Excellent performance in the structure in which it will be placed .
 A high-strength concrete is always a high performance concrete,but a high
performance concrete is not always a high-strength concrete .

4. What is High Performance Concrete?
According to Paul Zia
HPC is a concrete ,which meets special performance ,and uniformity requirements
That can not be always achieving by using only the conventional materials and
Normal mixing ,placing, and curing practices.
According to Civil Engineering Research Foundation (CERP)
HPC is a concrete in which some or all of the following properties have been
enhanced
 Ease of placement ,Early age strength.
 Long term mechnical properties, Toughness.

5. Components / Ingredients
The main ingredient of HPC are as follows
 Cement
 Fine aggregate
 Coarse aggregate
 Water
 Mineral admixtures (fine filler and/or pozzolonic supplementary cementations
Materials)
 Chemical admixtures (plasticizers ,super plasticizers ,retarders ,air-entraining
Agents)

6. Methods for achieving High performance
 Better durability performance has been achieved by using high- strength ,
Low W/c ratio concrete.
Two approaches to achieve durability through different techniques are as
follows
 Reducing the capillary pore system such that no fluid movement can occur is
the first approach. This is very difficult to realize and all concrete will Have
some interconnected pores.
 Creating chemically active binding sites which prevent transport of
Aggressive ions such as chlorides is the second more effective method .

7. There are two approaches are shown in fig-1

8. Characteristics of High performance concrete
Concrete may be regarded as high performance for several different Reasons
 Very low porosity through a tight and refined pore structure of the cement
Paste .
 Very low permeability of the concrete
 High resistance to chemical attack .
 Low heat of hydration
 High early strength and continued strength development
 Low water binder ratio
 Low bleeding and plastic shrinkage

9. Stress-Strain Behaviour
The shape of the ascending part of the stress-strain curve is more linear
And steeper for high-strength concrete ,and the strain at the maximum
Stress is slightly higher foe HPC .
The shape of the descending part becomes steeper for high performance
Concrete.
High performance concrete exhibits less internal micro cracking than
Lower -strength concrete for a given imposed axial strain

10. Advantages
Speed of construction
Economical material in terms of time and money
Higher seismic resistance
Improved durability
Abrasion resistance
High tensile strength
Reduced
Maintenance cost

11. Disadvantages
An extended quality control
Cost
Special constituents
Manufactured and placed carefully

12. Applications
 In Pavements
 In Bridges
 In High-rise buildings
 Miscellaneous applications

13. Case Study
JOIGNY BRIDGE
 Built across river yonne
 Three span bridge
 Height of 2.2m
 Width of 15.8m
 French codes
Features.
 Concrete strength -91.7Mpa and 65.5Mpa
 Tensile strength is 5.1Mpa
 FIREST BRIDGE WITH 60Mpa
 Completed in 1989

14. PETRONAS Tower
Nuclear Reaction France

15. LA GRANDE ARCHE,
PAIRS
THEGREAT HASSAN II
MOSQUE ,MOROCCO

16. Conclusion
We are going to expect concrete that is a little more expensive per cubic
Meter to buy but
 It will require less skill and effort to place
 It will look better with no appearance defects.
 It will be more durable
 It will require more skill at the batching plant.

18. ANY QUERIES?