Corrosion is a universal phenomenon which is generally described as the deterioration of a material when it reacts with its surroundings. It is a natural process that takes place when refined metals start returning to a more stable compound. During that process, engineered materials disintegrate into its constituents atoms. The process is also called rusting.
In the presence of oxygen and water, electrochemical oxidation of metal occurs leading to rust and corrosion. Metal reinforcement used in underwater concrete pillars experiences a different form of corrosion where iron and chlorine create a reaction.
Every concrete structure has to survive in a unique environment. It is the corrosive elements that make an environment hostile and conducive to rust. Acidic soil, humidity, chlorides, alkaline and fog are some of the elements that make it hard for a concrete member to achieve its expected service life. Countries such as the US and Canada have a variety of environments and soil conditions, mostly corrosion conducive. Concrete members reinforced with traditional steel cannot withstand an environment where high acidity, salts, moisture content, and high electrical conductivity are in abundance.
We cannot limit corrosive conditions to certain boundaries; acid rain damages the environment and leads to corrosion damage beyond boundaries. Industrial pollution is also one of the factors that cause and accelerate corrosion. Governments spend trillions of dollars as annual corrosion-related costs. The construction industry has already tried many techniques such as, surface treatment, costly metals and coatings to fight corrosion. None of the traditional material and technique could sustainably resolve this long-standing issue. How can modern construction materials help civil engineers eliminate costly corrosion?
The composite materials also called fiberglass reinforced polymers (FRPs) are being widely used in military and aerospace industries where corrosion is a big concern. Following the success in previous applications, composite materials have produced incredible results in civil engineering applications. FRPs have emerged as the only sustainable solution to concrete deterioration-related problems. They are corrosion-resistant, high in tensile strength, and lightweight materials that can help structures achieve the service life of 100+ years. The unique and advantageous properties of FRPs have completely outperformed traditional steel.
FRP composites, especially GFRP reinforcement, are safe and reliable construction solutions, capable of fighting corrosive conditions in various types of environments. Being a thoroughly tested and proven technology, GFRP rebar can provide sensitive concrete structures with an extended service life with minimum maintenance. This is the main reason why composite rebar and accessories are now being increasingly used in new and rehabilitation applications. Moreover, the properties of FRP materials can be customized depending on the nature of an application.
TUF-BAR is one of the few GFRP rebar producers and sellers in the world. We produce fiberglass rebar and accessories using our proprietary patented pultrusion manufacturing process. Our products include fiberglass rebar, rock bolts, anchors, and form ties. Contact us to discuss your project and requirements!