Carbon Fiber Board

Carbon fiber board is formed by impregnating and hardening carbon fiber filaments arranged in the same direction with resin to form a carbon fiber board. It can effectively solve the problems of difficult construction and large engineering quantity of multi-layer carbon fiber cloth, with good reinforcement and reinforcement effects, and convenient construction.

At present, there are two common types of carbon fiber boards in the reinforcement market: ordinary and prestressed. Ordinary carbon fiber boards can be classified into high-strength first and second grades, with common thicknesses of 2.0mm and 1.4mm. The performance indicators of first and second grades are different, depending on the specific requirements on the drawings. Ordinary carbon boards are reinforced by pasting carbon board adhesive. The reinforcement of prestressed carbon fiber board is a complete system, including carbon fiber board, matching carbon board adhesive, tension anchor unit (fixed end anchor, tension end anchor, fixed end support, tension end support, pressure bar, anchor bolt, etc.).

Our carbon fiber board is made of high-quality carbon fibers and molded resin from Dongli Company in Japan. The carbon fiber unidirectional board made can fully utilize the strength and elastic modulus of carbon fibers, and can avoid the resin curing stage of carbon fiber unidirectional fabrics during construction, with high strength utilization efficiency and convenient construction. Multiple specifications available: 5cm x 1.2mm; 10cm×1.2mm; 5cm×1.4mm; 10cm×1.4mm：5cm×2.0; 10cm×2.0mm

The carbon fiber board reinforcement system consists of pre-stressed carbon fiber board and steel anchors at both ends. Pre stress is applied to the pre-stressed carbon board through the clamping of the anchors at both ends, making the carbon board permanently anchored to the concrete. This applies pre compressive stress to the concrete along the direction of bending and tension of the structural components. It can eliminate or slow down the stress hysteresis phenomenon of the added components, allowing them to work together with the original components. Narrowing the crack width of the original component, or even closing it, delays the occurrence and development of concrete cracks. Significantly improve the bearing capacity of beams and slabs, achieving true reinforcement.

1. Give full play to the high-strength performance of carbon fiber, and enable new and old components to jointly bear forces, transforming passive reinforcement into active reinforcement. The added prestress can eliminate or slow down the stress hysteresis phenomenon of the post added components, allowing the post added components to effectively participate in the work of the original components, thereby effectively reducing or even eliminating the strain hysteresis phenomenon of carbon fiber board, and achieving better reinforcement effects.

2. Reducing cracks in the original components and even eliminating structural cracks essentially solves the problem of crack repair. The negative bending moment generated by prestressing can offset the influence of some initial loads, improve the bearing capacity during use, reduce or even close the width of existing cracks in the component, limit the occurrence of new cracks, and suppress the development of cracks.

3. The carbon plate reinforcement system not only improves the crack resistance and stiffness of the components, but also significantly enhances the bearing capacity of the components. By leveraging the high compressive strength of concrete and the high tensile strength of carbon fiber, the shortcomings of its tensile strength can be compensated, and the occurrence and development of concrete cracks can be delayed, thereby improving the crack resistance and stiffness of components, achieving a significant increase in the bearing capacity of beams and slabs, and achieving the goal of reinforcing and supplementing strength.

Carbon fiber board can be used for bending and shear reinforcement of concrete beams, concrete floors, and bridge reinforcement; Reinforcement of concrete, brick masonry walls, and scissor walls; Reinforcement and reinforcement of bridge piers, piles and other columns; Reinforcement and reinforcement of chimneys, tunnels, water tanks, concrete pipes, etc; Repair and reinforcement of slabs and beams of reinforced concrete structures; Reinforcement of openings around walls and slabs; Reinforcement of beams and other structures made of wood; Reinforcement of bridge slabs, bridge legs, and trusses; Repair, reinforcement, and prestressed reinforcement systems for tunnels and cable ducts.

 

 

1. Construction preparation;

2. Concrete surface treatment;

3. Drill holes and plant high-strength screws according to the design drawings at the locations where the tensioning and fixing components of the carbon fiber board are installed;

4. After the screw solidification reaches the design strength, the installation of the tensioning end and fixed end steel components begins;

5. Wipe the carbon fiber board adhesive surface clean before pasting;

6. Apply carbon board adhesive to the contact surface between the carbon fiber board and the beam bottom, and apply carbon board adhesive to the contact surface between the anchor base plate and the beam bottom;

7. Install carbon fiber board;

8. Tensioning carbon fiber panels and observing changes in beam deflection;

9. After tensioning, apply 5mm thick carbon board adhesive as a protective layer on both sides of the carbon fiber board within the carbon fiber board range;

10. Apply a layer of carbon plate adhesive to the nut of the fixed anchor bolt, apply another layer of rust proof grease to the surface of all metal parts, and then install the tension end and fixed end anchor caps;

11. On both sides of the reinforced beam bottom, including the cap, high-strength and high bonding mortar protective coating is applied for protection.

 

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