carbon-fiber-is-an-effective-seismic-reinforcement-material

Carbon fiber is the mainstream seismic reinforcement material in the world.

But do you know why carbon fiber can be used for seismic reinforcement?

Let's do a little experiment.

Usually when we eat food in plastic packaging bags, there will be a small mouth on the side. It is especially easy to tear the packaging bag when it is torn from this mouth.

Concrete is a brittle material. If there are cracks in the concrete wall, it is easy to cause the entire wall or floor to crack. So in the event of an earthquake, if there is a crack, it will be fatal to the whole building.

Therefore, carbon fiber will be used for seismic reinforcement.

The carbon fiber contains a large number of carbon fiber bundles, and is a ductile material. If an earthquake occurs, hard steel or concrete will be damaged. However, there is carbon fiber cloth attached to the wall. The wall will not be broken directly, but will be linked by carbon fiber. The entire structure is connected as a whole to absorb the force released by the earthquake. Even if the deformation is large, the floor or wall will not collapse or fall directly, and it will win time for people to survive.

The carbon fiber has many excellent properties, the weight is very low, significantly reducing the load and saving materials. And the anti-corrosion performance is outstanding, the durability is far beyond the level of the steel structure, and it is a rare material for seismic reinforcement. Can greatly improve building safety and save costs.

Prestressed carbon plate reinforcement vs carbon fiber

Compared with the traditional reinforcement technology, carbon fiber cloth reinforcement and prestressed carbon plate reinforcement technology have many significant advantages. The most notable feature is that it reduces the difficulty of construction and guarantees the construction effect.

Carbon Fiber

Carbon fiber reinforcement technology is a new type of reinforcement technology that is reinforced by carbon fiber cloth to improve the stress state of components and limit the occurrence and development of cracks.

When carbon fiber cloth first entered China, many people felt it looked like a "magic cloth", looking thin, but full of energy. Take Horse carbon fiber cloth as an example. Can you imagine that it only has 23% of the weight of steel, but can exert a strength of up to 4300 MPa?

Carbon fiber's characteristics

1.Light self-weight, can operate in a narrow and small space, not affect the normal use of the houses in the construction;

2.High strength, can be used in bending, closed hoop and shear reinforcement flexibly;

3.Has the flexibility, can wrap components with complex shape;

4.Suitable for surface of various components (beams, columns, ventilation tube, pipe, wall);

5.Anti-acid alkali and other chemical corrosion and rugged environments (have no environmental pollution in themselves);

6.Long storage life, allow long operational deadline;

7.High strength, high modulus;

8.Can be the substrates of concrete, masonry structure, wood structure, and many other structures;

9.High temperature resistance, creep resistance under permanent load, corrosion resistance and good seismic resistance performance

Prestressed Carbon Plate

For the reinforcement of large-span beam-slab members, although the construction cost of carbon fiber cloth is low, it is actually a passive reinforcement, and the problem of stress lag will occur. 

The prestressed carbon fiber plate reinforcement technology overcomes this problem. It can improve the bending stiffness of the flexural member, reduce the deflection of the original member, limit the development of structural cracks, and solve the contradiction between the carbon fiber strength and the elastic modulus ratio is too high. Horse's prestressed carbon fiber plate has a tensile strength more than 10-15 times that of ordinary steel, and it performs well in major bridge reinforcement projects. Has been successfully used in Chile, India, Thailand, Malaysia, Indonesia and other markets.

Prestressed carbon plate characteristics

1.High strength carbon fiber plate, increase loading tremendously

2.Achieve high strength of carbon fiber by prestress

3.Active loading by prestress, no train lagging

4.Achieve Reverse bending moment, offset part of loading, increase stiffness, reduce distortion and deflection of members.

5.Reduce cracks, avoid and stop cracking.

FRP composite strengthening

FRP reinforcement systems apply fiber fabrics to the surfaces of buildings, bridges, and other structural members to improve structural performance. After installation, the fiber reinforced system will provide excellent long-term physical and mechanical properties.

CARBON FIBER is a dry fabric made of very high strength aviation grade carbon fiber.

feature

High strength to weight ratio

Excellent creep resistance and fatigue resistance

Extremely durable

Low aesthetic impact

benefit

Increase strength without increasing static load

Withstand continuous and periodic load conditions

Extremely resistant to various environmental conditions

Easy to hide

Where to use

Improve the bearing capacity of concrete beams, slabs, walls and columns;

Improve the seismic resistance of concrete columns;

Improve the seismic response of concrete beam-column connections, shear walls and heat collecting elements;

Improve the seismic performance of masonry shear walls and infill walls;

Restore the structural capacity of damaged or deteriorated concrete structures;

Increase the strength of concrete pipes, silos, tank chimneys and tunnels

GLASS FIBER is a dry fabric made of high-quality electronic glass fiber.

feature

High strength to weight ratio

Low aesthetic impact

benefit

Increase strength without increasing static load

Easy to hide

Where to use

Improve the seismic resistance of concrete columns;

Improve the seismic response of concrete beam-column connections, shear walls and heat collecting elements;

Improve seismic performance of masonry shear walls and infill walls

ARAMID FIBER is a dry fiber fabric composed of aramid fibers.

feature

High strength to weight ratio

High toughness

Non-corrosive

Non-conductive

Low aesthetic impact

benefit

Increase strength without increasing static load

Resistant to high shock and short-term load conditions

Will not cause galvanic corrosion

No impact on sensitive electrical equipment area

Easy to hide

Where to use

Increase the strength of concrete and masonry that are subjected to explosive loads;

Increased resistance to impact and excessive wear;

All reinforcement applications are in sensitive electrical environments where carbon fiber cannot be used due to electrical conductivity.