Glass fiber reinforced concrete (GFRC) is a composite material made from a combination of Portland cement, fine aggregates, water, and alkali-resistant glass fibers. The glass fibers are typically made of a material called AR (alkali-resistant) glass, which is specifically designed to resist the high pH levels in the concrete mixture.

The glass fibers are typically added to the concrete mixture in small amounts, ranging from 2 to 5 percent by weight, and serve to reinforce the concrete by providing additional tensile strength. This added strength allows for the creation of thinner and lighter concrete panels, while still maintaining the same level of durability and structural integrity as traditional concrete.

GFRC has a number of benefits over traditional concrete, including:

1. High Strength-to-Weight Ratio: GFRC is significantly lighter than traditional concrete, while still maintaining high levels of strength and durability.

2. Improved Durability: The addition of glass fibers provides enhanced resistance to cracking and other forms of damage, making GFRC ideal for use in high-traffic or high-impact areas.

3. Versatility: GFRC can be molded into a wide range of shapes and designs, making it an ideal choice for architectural and decorative applications.

4. Low Maintenance: GFRC requires little to no maintenance over its lifetime, making it a cost-effective choice for long-term use.

Overall, GFRC is a versatile and durable building material that offers a range of benefits over traditional concrete. It has found widespread use in both commercial and residential construction, particularly in applications such as facades, cladding, and decorative features.