Direct CFRP, carbon fiber reinforced Hotline: 13917130703 Chen a, CFRP repair of concrete structures technology CFRP technology is the repair of concrete structures with high performance carbon fiber-like material attached to the tree refers component surface structures, the formation of advanced composite materials with both structural members work together to improve reinforcement and mechanical properties of structural components of new special technology. CFRP construction method is currently in Japan, the United States and Europe and other developed countries for reinforced concrete structures of bridges, tunnels, buildings and other reinforcement of advanced engineering methods, in China has also been widely used. . CFRP reinforced concrete structure of key technologies: a must let the epoxy fully saturated carbon fiber material, to every small to micron carbon fiber yarns are bonded together to make it to bear the stress; b must be made of carbon fiber composites. Construction and structural bonding between both real prison, the formation of new structural components to withstand stress. CFRP reinforced concrete structure of the main materials: a carbon fiber cloth; b CFRP supporting resins. Second, the CFRP technology advantages, light weight, small thickness, a substantial increase after increasing the substrate thickness reinforcement; good flexibility for a variety of shapes of components beams, columns, plates, pipes and walls, etc; acid, alkali, chemical corrosion, suitable for a variety of harsh environments; construction convenient, short construction period; pollution-free, in line with environmental protection requirements; long storage life, long operational period. Third, the scope of a CFRP applications, concrete beam flexural and shear reinforcement plate flexural reinforcement, seismic reinforcement column; 2, factories, buildings, schools, hospitals and other industrial and civil construction reinforcement; 3. Bridge, water, nuclear power and energy infrastructure reinforcement. Fourth, the CFRP Introduction 1, CFRP Specifications Performance Project CFS-I-300 CFS-I-200 CFS-II-300 CFS-II-200 intensity levels of high-strength high-strength grade I high strength I Level II Level II high-strength weight ( g / m2) 300 200 300 200 theoretical thickness (mm) 0.167 0.111 0.167 0.111 tensile strength (MPa) GB safety indicators 3,400,340,030,003,000 test data 3,647,369,632,023,249 elastic modulus (GPa) GB Index 240 240 210 210 Safety Testing Data 241 241 213 212 Elongation (%) 1.70 1.70 GB safety index 1.70 1.50 1.50 1.70 1.51 1.51 Test Data 2, CFRP advantages uniform neat appearance, the surface clean, not mixed with debris, dust and other pollutants; no shortage of latitude, off weft, no breaking through the phenomenon, no holes; fiber alignment straight uniform, no skew, wrinkling; high strength, high elastic modulus. Fifth, a CFRP system construction process, unloading. He Jia before unloading solid reinforcement members as possible to deal with the unloading. 2, substrate processing. Concrete surface spalling, hollowing, cellular, and corrosion deterioration phenomena site should be chiseled, inferior layer for large area, in addition to cutting after applying epoxy mortar repair. Cracks treatment site should be closed first. Concrete machine angle, sandpaper and other equipment to remove the concrete surface laitance, oil and other impurities, the base surface of concrete structures to be polished smooth, especially convex parts of the surface to be polished, to be chamfered corner pasting processed and polished into arc-shaped (R≥30mm). The concrete surface with a hair dryer to clean and dry. 3, painted primer. Press the main agent: curing agent = 2 (or other ratios) will be the main agent and curing agent has placed in the container, with a spring balance metering, electric mixer Stir, according to the actual air temperature determines the amount and strictly control the use of time. Generally used within 1h. Will end with a roller brush evenly brushing glue on the concrete surface, to be glue curing (curing time depending on the scene and set the temperature to touch dry subject) and then proceed to the next step of the construction. Generally curing time is 2 ~ 3d. 4, the base surface leveling. Concrete surface depressions filled application site, templates and other joints height difference of the site appeared to be filled, to minimize the height difference. The corner should also be processed into a smooth arc radius of not less than 30mm. 5. Paste CFRP. According to the size and number of layers of carbon fiber cloth cut design requirements, unless special requirements, length of fabric should generally be within 3m of. Deployment, stirring surface glue (using the same method with the primer), then spread evenly on the site to be pasted in the lap, concrete corners and other parts to be painted some more. Paste CFRP, in determining the correct parts of the pasted strip the release paper, repeatedly rolling with a special roller along the fiber direction, remove air bubbles, and fully saturated with fabric glue. Multilayer paste should repeat the above steps until the fabric surface touch dry before the next layer of the paste. In the last layer of CFRP surface plastic surface evenly. Fiber cloth along the fiber direction of the lap length shall not be less than 100mm, fabric ends by lateral fiber cloth or stick steel fixed. 6, protection protection. Fiber cloth surface reinforcement should be taken after the plaster or paint spray fire protection.