Carbon fiber reinforced concrete structure construction technology of carbon fiber composite material with high tensile strength, low density, corrosion resistance and durability, etc., application of CFRP reinforced concrete structure began in the 1980s, the United States, Japan and other developed countries into the late 1990s, many of our research institutions and enterprises have also conducted experimental research in this area. At present, our bridges and civil engineering projects in Beijing, Shanghai, Tianjin, Jiangsu, Fujian, and many other areas has been widely used. Some of them are due to an accident caused by the carrying capacity of the structure or component and need reinforcement; some are due to lack of strength or reinforced concrete and reinforcement required; some is due to the structure or component at or near the useful life and needs reinforcement; also part of the building is not seismic fortification, can not meet the "Seismic identification mark" GB50023-95 requirements, the need for seismic strengthening. ? CFRP Introduction (1) Features ① high tensile strength, high elastic modulus. ② construction convenient, without any fixtures, templates, can adapt to a variety of structures without changing the shape of the reinforcement component dimensions, can be multi-paste, and can be effectively sealed the cracks of concrete; ③ good corrosion resistance and durability. ④ structure without increasing weight. (2) Scope. Reinforcement applicable to all forms of reinforced concrete structures or components. (3) reinforcement mechanism. The use of special high tensile strength epoxy CFRP pasted on the surface of the concrete structure, and with the formation of the whole, to work together. (4) application. Bridges, industrial and civil and specialty structures, towering structures, reservoirs, tanks, culverts, tunnels, harbor docks, and other reinforced concrete structures, structures, repair, reinforcement. ? Construction Technology 1. Concrete base treatment (1) crack treatment. Crack width of less than 0.2mm, the surface coated with epoxy sealed; cracks greater than 0.2mm pouring with epoxy. (2) The surface of the concrete structures incomplete, damaged part of the clean, compact structure to reach the site, its surface smooth. (3) Check whether the exposed rebar corrosion. If rust, make the necessary treatment. (4) after tick chisel, remove components missing parts and exposed tendons, with the epoxy mortar repair, rehabilitation, reach the surface smooth. (5) the component surface projection (transfer of parts of concrete structures, poor sections of the template) polished smooth, stepped in to try to smooth restored; the edges of the site, with a grinder ground fillet radius should be ≥ 30mm . (6) After the structure or component surface polished surface with a hair dryer to clean out dust and debris, or clean water and alcohol, and to fully dry the surface. 2. Tu primer (1) the primary primer and curing agent after the required proportion accurately weighed into the container, stir with a blender; reconcile the amount of time should be used within the usable time. (2) with a roller brush evenly brushing primer on the concrete surface, touch dry after (general conservation 3 to 24 hours) in order to carry out a process under construction. (3) the underlying paint touch dry or cured, the raised portion on the surface (generally similar, like dew condensation) use emery cloth or angle grinder grind. 3. Were incomplete repair with epoxy putty (1) surface of the component parts of the application of epoxy putty to fill depressions, and repair to the surface smooth, smooth. (2) the interior angle (stepped, bagging, etc.) to use epoxy putty to fill so smooth. After the putty Scraping the surface remains rough bump pattern, should then sanded smooth. 4. Paste CFRP (1) resin and curing agent master than the column should be required to accurately weighed, into a container with a stirrer stir evenly. Reconcile the amount of time should be used within the usable time. (2) along the longitudinal direction of the fiber sheet lap joints must be more than 10cm. The site should be multi-coated resin, degassing, the resin according to the normal operation. In the sheet width direction does not need to overlap. (3) pre-patch with a roller brush evenly with epoxy paste, known under the coat. When the patch between the fabric and resin try not to have air. Available Rolla (special tools) along the fiber direction in CFRP rolled several times on the resin percolation into the fibers. (4) fabric construction 30 minutes, with a roller brush evenly coated with epoxy paste, called on James. For multi-paste, repeat steps 4.1 to 4.4, and to ensure that the underlying paste coated CFRP has to touch dry before the next layer of paste. (5) The last layer should be coated carbon fiber brush evenly around the tidy. 5. Conservation (1) CFRP construction should be carried out maintenance, ensure that the temperature curing epoxy period not less than the allowable operating temperature. (2) the maintenance period is generally 1 to 2 weeks. The epoxy resin adhesive is pulled along the direction perpendicular to the direction of fracture or paste in the reinforcing structure to form a new complex, the reinforcing patch together with the original force of reinforced concrete structures is increased crack or shear capacity, improve structural strength, stiffness, crack resistance and extensibility.