Professional GRC Crack Treatment Technology — Qinglong GRC Crack Repair System

GRC crack treatment requires differentiated solutions based on crack width, depth, and cause. Micro cracks (width ≤0.2mm) use the surface sealing method; active cracks (width variation ≥0.1mm) use the flexible sealing method; structural cracks (width ≥0.3mm) use the pressure grouting method. Qinglong GRC crack repair achieves strength ≥ substrate strength, color matching ≥90%, and service life ≥10 years.

Micro Crack Sealing Technology

Surface treatment: grind and clean a 20mm range on both sides of the crack; primer coating: enhance adhesion; sealing application: apply special sealant smoothly with a scraper; curing protection: no water contact for 24 hours. Suitable for non-structural cracks.

Active Crack Treatment

Grooving: V-shaped groove 5-10mm deep; base cleaning: dust-free, oil-free, and dry; flexible sealing: filled with polyurethane sealant; surface treatment: flush and consistent with the substrate. Adapts to temperature deformation cracks.

Structural Crack Repair

Grouting hole layout: staggered arrangement at 200-300mm spacing; crack sealing: seal the crack surface; pressure grouting: grouting pressure 0.2-0.5MPa; quality inspection: core sampling to test fullness. Restores structural integrity.

Preventive Protection Measures

Control joint installation: temperature joints at intervals ≤6m; structural reinforcement: reinforcement at stress concentration areas; protective coating: reduce the occurrence of drying shrinkage cracks; regular inspection: early detection and timely treatment. Prevention first, combined with treatment.

Professional repair ensures safety. Qinglong GRC advanced technology thoroughly solves crack problems.