1. GFRP rebar is weak: This is a common misconception that arises from the belief that if a material is lightweight, it must be weaker than traditional steel. However, GFRP rebar is actually stronger than steel in terms of tensile strength. GFRP rebar has a tensile strength twice that of steel rebar. Additionally, GFRP rebar has a higher strength-to-weight ratio than steel, which means it can support more weight per unit of mass than steel.
2. GFRP rebar corrodes easily: GFRP rebar does not corrode at all. Unlike steel, GFRP rebar is not susceptible to rust, which is a significant advantage in areas with high humidity, salt spray, or other corrosive environments. This resistance to corrosion makes GFRP rebar an excellent alternative to steel rebar, especially in coastal areas, where steel rebar corrodes more quickly.
3. GFRP rebar is expensive: GFRP rebar is a more cost-effective option in the long run. It is two times stronger than TMT rebar, which means that a smaller diameter bar can be used, reducing the cost of the material. Furthermore, GFRP rebar has a longer lifespan than steel rebar, which means less maintenance and replacement costs over time. In addition, the installation of GFRP rebar is simpler and less labor-intensive, reducing overall costs.
4. GFRP rebar is difficult to install: GFRP rebar is actually easier to install than steel rebar. GFRP rebar is lighter than steel, making it easier to handle and transport on the construction site. Additionally, GFRP rebar can be cut using standard equipment, similar to steel rebar. Due to its ease of handling and installation, GFRP rebar can result in faster construction times and reduced labor costs.
5. GFRP rebar is not approved by building codes: This is a common misconception that is not true. GFRP rebar is approved by most building codes globally and has been used successfully in a wide range of construction projects, including bridges, highways, and buildings. Building codes are constantly being updated to reflect new technologies and innovations, and GFRP rebar is increasingly being recognized as a viable alternative to traditional steel rebar in India as well. GFRP rebar is manufactured to strict standards and undergoes rigorous testing to ensure its durability and strength. As a result, it has gained widespread acceptance in the construction industry.
In conclusion, it is important to dispel these misconceptions and recognize the advantages of GFRP rebar as a viable alternative to traditional steel rebar. Its strength, corrosion resistance, durability, ease of installation, and compatibility with building codes make it an attractive option for a wide range of construction projects.