High Performance Crete
High Performance Crete
Navrattan’s High-Performance Crete is based on the compressive strength; Crete is normally classified as normal strength Crete, high strength Crete and ultra-strength Crete. Indian standard recommended methods of mix design denote the boundary at 35 Mpa between normal strength and high strength Crete. The advent of pre-stressed Crete techniques has given impetus for making Crete of higher strength. High strength Crete is necessary for the construction of high rise building and long spans bridges. To achieve high strength, it is necessary to use high cement content with the lowest possible W/C ratio which invariably affects the workability of the mix.
It should be remembered that high cement content may liberate large heat of hydration causing a rise in temperature which may affect the setting and may result in excessive shrinkage. Navrattan High-Performance Crete is specially manufactured cement that has revolutionized the development of architectural designs. The use of High-Performance Crete provides many building and construction applications with a wide range of aesthetic and decorative opportunities.
Description
High-Performance Crete that provides either substantially improved resistance to environmental influences (durability in service) or substantially increased structural capacity while maintaining adequate durability. It may also include cement, which significantly reduces construction time without compromising long-term serviceability. While high strength cement, aims at enhancing strength and consequent advantages owing to improved strength, the term high-performance crete is used to refer to the concrete of required performance for the majority of construction applications.
In general, a High-performance Concrete can be defined as that concrete which the highest durability for any has given strength class and comparison between the concretes of different strength classes is not appropriate. This means that, with the available knowledge, one can always strive to achieve a better (most durable) concrete required for a particular application.
Advantages
Advantages of Navrattan’s High Performance Crete are:
- Navrattan High-Performance Crete has a better performance when compared to normal strength concrete.
- Strength
- Ductility
- Durability
- Reduced maintenance and repair
- Reduced cost of formworks
Characteristics
The development of High-Performance Crete (HPC) is a giant step in making cement a high-tech material with enhanced characteristics and durability. High-performance Crete is engineered Cement obtained through a careful selection and proportioning of its constituents. The Concrete is with the same basic ingredients but has a totally different microstructure than ordinary cement.
The HPC is a specialized series of Crete 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. In other words, a high-performance Crete is a Crete 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, in the environment to which it will be exposed, and with the loads to which it will be subjected during its design life.
Below are the Characteristics:
- High early strength
- High strength
- High modulus of elasticity
- High abrasion resistance
- High durability and long life in severe environments
- Low permeability and diffusion
- Resistance to chemical attack