High Performance Concrete

Introduction

Concrete is the most widely used construction material in India with annual consumption exceeding 100 million cubic meters.
A building material made from a mixture of broken stone or gravel, sand, cement, and water, which can be poured into moulds and forms a stone-like mass on hardening.
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.

Important Components / Ingredients

Methods for achieving High Performance

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.

Characteristics of High Performance Concrete

Requirements of High Performance Concrete

Advantages of High Performance Concrete

Disadvantages of High Performance Concrete

Applications of High Tensile Strength

High Performance Concrete is being increasingly used for highway pavements due to the potential economic benefits.
Fast track concrete paving (FTCP) technology can be used for complete pavement reconstruction.
High Performance Concrete is being extensively used now for the fabrication of precast pylons, piers, and girders of many long span bridges in the world.
Concrete structures are preferable for railway bridges to eliminate noise and vibration problems and minimize the maintenance cost.
The reasons for using the high strength concrete in the area of high-rise buildings are to reduce the dead load, the deflection, the vibration and the noise, and the maintenance cost.
Fibre reinforced concrete has been used with and without conventional reinforcement in many field applications. These include bridge deck overlays, floor slab, pavements and pavement overlays, refractories, hydraulic structures, thin shells, rock slope stabilization, mine tunnel linings and many precast products.

Conclusion

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.
High value concrete is a specialized series of concrete designed to provide several benefits in the construction of concrete structures that cannot always be achieved routinely using conventional ingredients, normal mixing and curing practices.

CONCRETE CIVIL