Carbon fiber reinforcement technology refers to the use of high-performance adhesives to paste carbon fiber cloth on the surface of building structural components, so that the two work together. Improve the bearing capacity of structural members (bending resistance, shear resistance), thereby achieving the purpose of strengthening and strengthening the building.

Carbon fiber reinforced polymer (Carbon Fibre Reinforced Poly-mer is referred to as CFRP, also known as carbon fiber reinforced plastic) is made of epoxy resin bonded with high tensile strength carbon fiber bundles.

In the reinforcement of concrete structures, carbon fiber cloth mainly shares the force of steel bars, that is, the main function of carbon fiber cloth is to improve the tensile strength of structural members. Carbon fiber reinforcement technology is suitable for the reinforcement and repair of various structural types and structural parts, such as beams, slabs, columns, roof trusses, piers, bridges, cylinders, shells and other structures. It is only required that the strength grade of the base concrete is not lower than C15. In addition, some mechanical properties of brick masonry can also be reinforced with carbon fiber.

Overview of china telecom communication computer room project in maoming city

Overview of China Telecom Communication Computer Room Project in Maoming City The original China Telecom communication computer room in Maoming City was on the three floors of the office building. The live load (6.0KN/m2) used by the computer room exceeded the 2.5 KN/m2 live load used by the original office building. The original floor structure is a cast-in-situ slab system with primary and secondary beams (concrete strength grade C40, slab reinforcement is grade 1 steel, and beam reinforcement is grade II). After program demonstration and clarification, the floor slab does not need to be reinforced, and the main and secondary beams need to be reinforced. After program demonstration and economic and technical feasibility comparison, and with the consent of the owner, it was decided to use carbon fiber composite materials for reinforcement

Horse carbon fiber cloth (HM-20) is used in this project, and its main performance indicators

Horse carbon fiber adhesive (HM-180C3P) is used in this project, and its main performance indicators

Two layers of 300mm wide and 200g carbon fiber cloth are pasted on the bottom of the beam to meet the design and use requirements.

In order to strengthen the staggered carbon fiber cloth at the bottom of the beam and increase the shear resistance of the beam, 3 layers of 100mm wide U-shaped shackles are pasted on each side of the beam end, and two 100mm wide U-shaped shacks are pasted on each side of the intersection of the primary and secondary beams. The specific method is shown in the figure

Engineering practice has proved that carbon fiber (CFRP) reinforcement technology is very effective for the reinforcement and reinforcement of concrete structures and components. Under the premise of basically not increasing the cross-sectional size and self-weight of the beam, the technology has reached the owner's requirements in terms of construction period, material durability, and construction quality. Its comprehensive economic and social benefits are good, and it has great value for promotion.