Concrete is used more and more widely in the construction industry. Cracks in concrete engineering are inevitable and acceptable within a certain range, but effective measures should be taken to control the degree within a certain range.
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Crack repair process
1. Surface repair method.
1) When there are a large number of small surface cracks on the concrete surface, it is recommended to use a special sealant: concrete crack repair glue to seal the cracks and play the role of surface sealing.
2) Crack repair glue can be used to repair cracks that are small in number and not concentrated, that is, we can use a special glue injection appliance to inject glue, which is what we call crack sealant.
3) There are many cracks on the concrete surface, which are widely distributed, and one layer can be added cement mortar Or the crack can be treated by the method of fine aggregate concrete integral surface course.
4) Use Epoxy resin adhesive Use carbon fiber cloth to seal the crack surface.
5) Surface stitching, on both sides of the crack drill hole And put the reinforcement into the hole to sew up the cracks.
Jiehe Reinforcement, focusing on structural reinforcement for 20 years! Relying on the construction qualification and construction team, and reasonable price, Jiehe Reinforcement sincerely hopes to cooperate with all walks of life in the construction, help you solve the problems of project reinforcement, transformation and quality, and provide considerate services for all walks of life with excellent quality! The company's slogan is: "Survival by quality, development by reputation"! Over the years, the company has completed thousands of building structure reinforcement and transformation projects with rich construction experience. We hope that in the process of cooperation and development, we can achieve mutual benefit and win-win results!
The above is the introduction of Jiangxi Reinforcement Company - Jiehe Reinforcement. If you need to find a reinforcement engineering company, please contact us.
2. Local repair method
1) Filling method
The U-shaped groove with the depth and width of no less than 20mm and 15mm shall be chiseled across the cracks on the surface of the component; When the crack is fine, V-shaped groove can also be chiseled. Then, it is filled with modified epoxy resin or elastic material, and pasted with fiber composite to seal the surface cracks; After sealing, the surface shall be coated with protective layer.
2) Prestress method
Drill holes on the component (the hole forming direction is perpendicular to the crack direction), pay attention to avoiding the reinforcement, and then penetrate the screw, apply prestress to tighten the nut, so as to reduce or close the crack.
3) Re concreting
For reinforced concrete precast beams and other components, if the concrete cracks are chiseled due to improper transportation, stacking and hoisting, the concrete near the cracks can be chiseled, cleaned, fully wetted, and then poured with a higher strength grade of concrete.
3. Grouting method
Pour the cement or epoxy resin grout into the concrete crack to make it diffuse and solidify. The solidified grout has a high bond strength, which can bond well with the concrete and enhance the integrity of the component. The integrity of the component is restored, and the durability is improved, so as to achieve the purpose of seam plugging and reinforcement.
The above is a brief introduction to relevant contents made by Jiehe Reinforcement based on years of reinforcement experience. I hope it will be helpful to colleagues who want to know about reinforcement. The company pays attention to the integrated management of "reinforcement scheme design, budget and construction" to provide customers with time-saving, trouble saving and more worry free quality services. If you need more information, you can call for communication.
