A Complete Guide on GRC
GRC refers to Glassfibre Reinforced Concrete or Glassfibre reinforced cement. It is a new material that has wide use in aesthetics, technology and financial aspects of the global construction industry.
This composite is environment-friendly because of natural raw materials and low energy consumption. Its utility and cost effectiveness has won it much popularity among architects, designers and engineers.
GRC was introduced in 1969. Today, it features a wide assortment of matrix modifiers like rapid set cements, acrylic polymers and additives for ensuring durability of material.
The alkali resistant fiber made of glass is commonly used in the 2.5% level in the manufacture process of prefabricated products, which are factory finished either by traditional casting methods or by spray process. It is even used at 1.2% level as a site applied mix, which can be used to prevent shrinkage, bleeding or micro-cracking of site-cast concrete.
GRC is manufactured in two ways: “sprayed process” or “premix process.” Premix GRC can be made by using a GRC mix that is self compacting or vibration compacted.
Sprayed GRC is normally stronger than Pre-mix concrete. The first reason is that with sprayed GRC, fiber content can go up to 5% to 6%, while in case of pre-mix GRC, it is down to 3 to 3.5%. Secondly, pre-mix GRC has more water content than Sprayed GRC.
But the choice of method depends on mould size, specification of architect or strength requirement. As a typical rule, small objects are created using a Pre-mix method of GRC while large items like building cladding panels use sprayed GRC.
GRC can be used for ambitious designs. GRC can be used to make windows and raw material can be sourced from GRC jali manufacturer. GRC can be painted and finished in different colors or a natural grey or white with textured or smooth finish.
Key benefits of GRC are:
- It is an environmental-friendly material.
- It reduces weight on buildings, which lead to considerable savings in super-structure and foundations.
- It works wonderfully for renovation and reproduction.
These are some facts about GRC. Thus, GRC is a strong and versatile material for use in the construction industry.