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mardi 31 mars 2015

Things To Know About Glass Fiber Reinforced Polymer

By Lelia Hall


There are many types of fibers that can be used to reinforce polymer matrix composites. Actually, corrosion of internal reinforcing steel is one of the main causes of failure of concrete structures. It cannot be avoided that concrete will surely crack, creating a direct avenue for chlorides to start oxidizing the steel bar. Fiberglass is a type of reinforced plastic where the reinforcement fiber is specifically glass fibers.

This material is lightweight and used for different product applications. It is a versatile material due to its weather resistant finish, lightweight, variety of surface textures and inherent strength. A glass fiber reinforced polymer is a successful and proven alternative for construction standards, authoritative consensus guides, product procurement specifications, test methods ad qualification of methods available for the designers.

This is to ensure that designers and owners are safely and commercially implement the reinforcement in different types of structures. Fiberglass is a glass that has been used into different forms of fibers. It is not as strong or stiff as the carbon types, but has characteristics that make it advisable in many applications. It is not also non conductive and generally invisible to all types of transmissions. This makes it an ideal choice when dealing with broadcast or electrical applications.

The mechanical behaviors and properties of fiber reinforced polymers including composites with carbon and glass fibers, versus metal reinforcing must be understood before undertaking the design of structures with the use of these reinforcements. These systems are increasingly acceptable alternative to steel reinforcement for reinforced concrete structures.

The advantages of these systems over steel reinforcement is its flexibility to corrosion. Masonry structures may also benefit from these systems. They are useful to strengthen the structures that is specified by structural engineers in both private and public industries. Using glass fibers are the primary reinforcing fiber in all FRPs.

An important factor to consider in choosing a certain reinforced composite used for different structural applications is to learn and understand such limit of each fiber to resist long term loading. Continuous and cyclic loading in the fiber polymer can resist loads which may only persuade failure, rupture in structural elements and long term deflections.

Most of its advantages include corrosion resistant, high strength and light weight, dimensionally stable, low thermal conductivity and non conductive as well as impact resistant, electromagnetically transparent and low life cycle costs. Its main disadvantage is its high initial cost as compared to steel reinforcement.

FRPs used as structural augmentation are widely used in variety of applications. They are used in bridges, roads, tunnels, slopes and marine environments. An internal augmentation has a particular advantage in tunnel walls, where steel reinforcement would damage the face of the tunnel boring machine.

Knowing all these things will give you an idea before the project. It can create great awareness of the things that must be done before starting. This is especially when planning to build complex structure. This is another way to determine the right applications.




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