Concrete is the mainstream material of current construction. A large number of buildings on the market use concrete structures. However, concrete materials have their own problems. If they are used for a long time or the quality of the concrete itself is not sufficient, there will be hidden safety hazards. What's the problem?
At present, the biggest problem of concrete is that it is prone to appear cracks. Cracks in concrete structures can be divided into the following three categories according to their formation:
1 Static fracture: The shape, size and number of fractures have stabilized and no longer develop. When repairing, you only need to select repair materials and methods according to the thickness of the crack.
2 movable crack: the width can not always remain stable under the existing environment and working conditions, and it is easy to be closed with the stress, deformation of the structural member or the change of the ambient temperature. When repairing, the cause should be eliminated first, and observed for a period of time to determine that it has stabilized, and then treated according to the method of static cracks.
3 Cracks that are still developing: Lengths, widths, or numbers that are still developing, but will end after a period of time. Such cracks should be repaired after they stop developing.
There are two general methods for crack treatment: grouting method and carbon fiber cloth method. For concrete cracks with a width less than 0.15mm, the special sealant is Mankate MKT-SG sealant to seal the surface. First, clear up the concrete surface, treat the cracked surface with the cleaning agent, mix the glue, mix the glue evenly, apply repeatedly, and cure for 1 day. Static cracks with a width of 0.1-1.5mm, independent penetration of cracks and reinforcement and sealing of local honeycomb defects. When carbon fiber cloth is used to seal the crack surface, the effective method is to inject Mankate jointing glue first, and then stick the carbon fiber cloth. If the crack direction is non-linear and the curvature of the curved section is too large, it is necessary to adopt a segmented bifurcated lap to close it. The length of the lap should not be less than 100mm to save material.
Carbon fiber cloth is a very good solution for concrete diseases. Mankate has been focusing on strengthening the industry for 16 years. There are a lot of concrete reinforcement cases in China. Consulting: 400-894-5118
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