Carbon fiber reinforcement technology:
1. Concrete Surface Treatment
Concrete surface layer should be chiseled whitewash, grease, dirt, and then rubbed 1-2mm thick surface angle grinder, concrete structures should be chamfered corner, grind (positive angle) or fill out the (negative angle) radius not less than 20mm smooth arc, polished finish with compressed air blowing dust, and finally with a dry cloth scrubbed surface, keep dry spare.

2. Paste surface repair leveling (if smooth, this step can be omitted)
2.1. Cellular concrete surface, pockmarked face, concave and convex portions with three concrete repair structural adhesive filled, after repair glue curing (drying finger touch is appropriate, about 2-5 hours), may be the next process.

3. Configure primer
(1) WD3403 sticky fiber primer A, B, two parts. Weighing apparatus according to Mix 2; 1 glue should be mixed with mechanical stirring, a small amount can also be fine steel rod manual mixing with a stirrer and stirred for about 5∽10 minutes to the A, B groups were mixed up. (2) is preferably stirred in the same direction with stirring, to avoid the formation of air bubbles mixed. (3). Adhesive should be now with the current, each with glue not more than 2 kg.

4. Tu primer
With a brush, roller or plastic scraper to glue evenly on the bottom surface of the concrete member, be careful not to leak brush and avoid bubbles, and other dried glue after curing finger touch to carry out a process under construction.

6. Configure and plastic cutting surface with carbon fiber sheet
(1) .WD3503 sticky glue fiber surface is A, B two components, weighing scales with the press than 3; 1, with mechanical stirring gum should also be manually stirred 8∽10 minutes, until evenly mixed up. (2) each time the amount of configuration to less than 3 kg is appropriate, now with the current. (3) according to the design requirements of size with a sharp pair of scissors cutting carbon fiber, pay attention to uniform, to avoid glitches. It should be on a flat wood, cardboard, plastic sheeting on the crop to keep the fiber cloth Jiejing.

7. CFRP SHEETS
(1) would WD3503 sticky glue evenly to the fiber surface on the concrete paste parts and carbon fiber, more appropriate to apply some parts of the corner. (2) would be a good adhesive coated carbon fiber cloth, taut Paste Aligned with a plastic scraper or roller (with a paint roller to remove hair outside you can), repeatedly rolling in the same direction until the plastic material leaking. Then carbon fiber outer surface of the fiber sheet are evenly coated plastic surface, and repeatedly rolling, so that structural adhesive two-way full infiltration with carbon fiber sheet. (3) If a multi-layer paste to be dried finger touch, can be carried out under a layer of paste (Repeat step 6, step 7). (4) fiber sheet For lap, lap length of not less than 0.2 meters.

8. Curing
If after construction is completed within 24 hours to prevent rain or moisture, and pay attention to protection against a hard object bumps construction surface. Curing temperature about 20 ℃ -25 ℃, 3-7 days to load. If the curing temperature 5 ℃ -10 ℃ about 7-10 days to load.

9. Maintenance Inspection
(1) Available Hammers tap or hand pressure adhesive surface judgment paste inspection results, the total effective area of not less than 95% of the bond, such as a slight hollowing (area less than 100cm2) dispensing needle can be taken to remedy methods . If hollowing area of more than 100cm2, preferably at the carbon fiber hollowing Dimensional addition, sticky patch four weeks lap length greater than 0.2 m CFRP block (2) may also be important members load detection, the general classification of the load to the normal load standard values, (3) paste after 48 hours, you can paint the M15 20mm thick cement mortar or sand blasting protection. (4) Note that the outermost layer of glue before the initial setting should sprinkle a small amount of clean, coarse sand or beans stone, stucco facilitate the binding interface.

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  扬州电厂
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  承接上海碳纤维加固工程
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  承接上海碳纤维加固工程