Durability Of GFRP Composites In Aggressive Environments

Durability Of GFRP Composites In Aggressive Environments

Glass fiber reinforced polymer (GFRP) composites are increasingly becoming a popular and sustainable solution for civil engineering applications. Superior properties of composites help resolve some of the drawbacks associated with traditional materials. The durability behavior and long-term performance of GFRP makes it attractive for structural engineers to implement these innovative materials in a safe and advantageous manner.

GFRP reinforcement is already being implemented in strengthening and rehabilitation of built concrete structures. Since composite materials in construction are not as old as other traditional materials such as steel, the lack of data on their long-term behavior in harsh and common environments somewhat limit the wider application of new construction materials. The success of GFRP depends largely on its properties: superior durability against corrosion, ease of installation, high strength and stiffness, and minimum maintenance costs.

Components of GFRP reinforcement

The durability of composite materials in various environments depends on the choice of constituents materials and the quality of the manufacturing process. GFRP materials are typically constituted of glass fibers and vinyl ester resin matrix which hold together the fibers. These constituents which also include adhesive have a decisive influence on the durability and behavior of GFRP in common environments.

Aggressive environments and construction

Reinforced concrete (RC) structures have to survive harsh environments, such as de-icing salts, which can seriously damage the integrity of a structure and increase maintenance costs. To reduce the impact of aggressive environments on concrete structures, the use of GFRP reinforcement has greatly increased over the last 10 years. When it comes to an economically viable replacement for traditional reinforcement, composite materials provide the only sustainable solution. The high strength-to-weight and non-corrosive characteristics of GRRP increase the service life of concrete structures subject to aggressive environments.

The contemporary construction industry requires environmentally-friendly materials which maintain their properties throughout their expected lifespan. Durable construction materials such as fiberglass rebar can maintain their balance in the ecology of almost any environment.

Concrete is used as the main material in construction. The role of GFRP fiberglass rebar is to increase the strength of concrete while providing a shield against corrosive elements such as salt and chemicals. Electromagnetic neutrality of GFRP rebar makes it an ideal material for buildings of critical importance: nuclear power plants, hospitals, research facilities, educational institutes, etc.


TUF-BAR takes pride in manufacturing sustainable construction products: GFRP fiberglass rebar, rock bolts, form ties, and concrete anchors. Our objective is to provide the world with durable, cost-effective, and maintenance-free concrete reinforcement which can withstand some of the toughest environments on the planet. Visit our website or contact us for more information!