Concrete consists of three main elements: sand, aggregate, and cement, in which sand and aggregate are bonded together by cement. Albeit, it is clear that this adhesion requires water.
Application of concrete can be both advantageous and disadvantageous. In other word, applying it may be necessary or advantageous in some cases and impossible or harmful in other cases.
Instances of the Concrete Disadvantages
The concrete’s tensile strength is acutely insignificant such that this brittle behavior may lead to sudden break and collapse of concrete structures during an earthquake.
The problem of the brittleness of the concrete can be solved by reinforcing it with steel bars in the direction of tensile forces. But in many cases, the exact direction of these tensile forces is not known.
On the other hand, in fresh concrete, due to the shrinkage of the concrete, the dimensions of the concrete change and cracks are formed. The cracking in the concrete may lead to increased permeability, destruction of the concrete surface, corrosion of reinforcement and reduction of mechanical properties.
A reliable, good option for solving these problems is to use small amounts of fiber to control crack growth and increase the tensile strength of concrete. Fibers have been applied in advanced industrialized countries since the early 1960s, and over the past six decades, the substance and shape of fibers, as well as their production procedure, have improved, and they are much more used than the past.
The historical evidence of this technology is the use of cob in buildings.
Fiber-reinforced concrete is, in fact, the advanced form of this technology in which new natural/synthetic fibers and cement have replaced the straw and the mud respectively.
The fibers used in concrete are in different materials such as glass, steel, carbon, polypropylene, collar, etc. among them steel fibers have advantages over other types, including:
- They have a high modulus of elasticity and fracture strain, which are one of the most suitable and economical types of PP fibers due to their desirable forming ability and high tensile strength.
- They create the highest increase in the strength and the ductility of concrete.
- They can be produced in various shapes to improve the behavior of concrete.
But the more important point for increasing the concrete strength is to reduce the percentage of water in the cement.
NSG-N50 as a reliable product of NSG Co. increases the concrete strength and improves concrete to reinforcement adhesion by reducing this ratio (i.e. water-cement ratio) to the ideal level.
Important features of NSG-N50
- Increasing combinability with all types of cement mortars with any cement content
- Increasing adhesive power and bonding strength with iron as well as old and new structures, etc.…
- Increasing tensile and bending strength
- Protecting the concrete slump
- Acting as an antifreeze
- Acting in the temperature range of -75°c to +350°c
- Resisting against UV rays and CO2
- Improving convergence between the concrete content
- Hardening the concrete significantly
- Sealing the concrete
This product can be used in/for:
Production of Cement curbs
Construction of tanks, reservoirs, pools
Cementation and foundation of high-traffic areas
Stoneworking, especially at high altitudes
The stoneworking and tiling mortars
The lean concrete
Primary concrete placement of pools, ponds, tanks, reservoirs, Jacuzzis