ماذا تفعل حيال تشققات GRC؟ هندسة منظومة معالجة التشقق

The treatment of GRC cracks requires targeted solutions based on the crack's nature, width, and depth. Cracks can be classified by width into: microcracks (≤0.1mm), fine cracks (0.1-0.3mm), and structural cracks (≥0.3mm). Based on numerous repair cases, Qinglong GRC has developed a scientific crack treatment system.

In a commercial complex project in Wuhan, a GRC decorative column developed 0.2mm temperature cracks. Qinglong adopted a comprehensive 'grouting + reinforcement' treatment approach: first injecting epoxy resin slurry (viscosity ≤200cps) with a low-pressure syringe, then bonding carbon fiber fabric for reinforcement. Post-repair testing showed the load-bearing capacity recovered to 115% of the design value, with no visible repair marks on the surface. The automatic crack monitoring system used in this project tracks crack development in real time, providing data support for preventive maintenance. This comprehensive treatment approach achieves a repair effectiveness retention rate of over 95%.

Surface Sealing Method

Suitable for microcracks with a width ≤0.1mm. A penetrating sealant is applied to a depth of 3-5mm. The application temperature must be between 5-35℃. This method serves as preventive treatment.

Pressure Grouting Method

Treats active cracks of 0.1-0.3mm. Modified epoxy resin slurry is used at a grouting pressure of 0.2-0.5MPa. Injection ports are spaced 200-300mm apart. This method restores structural integrity.

Joint Filling Method

Used for wide cracks ≥0.3mm. A V-shaped groove is cut to a depth of crack depth + 5mm and filled with polymer-modified cement-based material. This method is suitable for non-structural cracks.

Structural Reinforcement Method

Addresses cracks with insufficient load-bearing capacity. Carbon fiber fabric or steel plates are bonded for reinforcement. Prestressed steel strands are added when necessary. This method provides fundamental treatment.

Crack treatment requires professional judgment. Qinglong GRC offers free technical diagnosis and treatment plan design services.