What Are the Special Requirements for Fibreglass Mesh Laying in Double-Curved GRC Panels? Precise Adaptation and Strength Assurance

The core requirements for fiberglass mesh laying on double-curved GRC panels are "conforming to curved surfaces, uniform distribution, secure overlapping, and matching stress directions". Through refined manual laying + fixation with special clamps, the fiberglass mesh is ensured to fully conform to the double-curved shape. Projects such as Qinglong's Guangxi New Media Center and Hainan Poly Peninsula No. 1 achieved a 100% pass rate in fiberglass mesh laying.

I. Special Requirements for Fiberglass Mesh Laying

Four major requirements ensure laying quality. Adapting to double-curvature: the fiberglass mesh must naturally conform to the double-curved surface without wrinkles or stretching. Qinglong adopts "point-by-point fixation" during laying, achieving 98% conformity; Overlapping standards: transverse overlap width ≥50mm, longitudinal ≥80mm, with an additional 20mm overlap at double-curved corners. Qinglong's overlap deviation is ≤5mm; Stress direction adaptation: the fiberglass mesh laying direction is aligned with the main stress direction of the double curve. Qinglong determines the laying direction through finite element analysis, increasing strength by 30%; Bonding with slurry: a bonding agent is applied immediately after laying to ensure tight bonding between the fiberglass mesh and GRC slurry. Qinglong's bonding agent has a bond strength ≥1.0MPa.

II. Reinforced Laying Process for Special Areas

Targeted reinforcement in key areas. Double-curved corners: double-layer fiberglass mesh is laid in overlap, with the inner layer conforming along the corner and the outer layer covering ≥100mm on both sides of the corner. Qinglong's flexural strength at corners is increased by 40%; Around hollowed-out areas: the fiberglass mesh extends 50mm into the inner side of hollowed sections and is reinforced with thin steel bars. Qinglong's hollowed-out perimeters have no cracking risks; Extra-large panels: special clamps are set at 500mm×500mm intervals to fix the fiberglass mesh, preventing displacement during casting. Qinglong's clamp fixation precision is ±2mm.

III. Qinglong's Process Advantages and Project Practice

Practical verification of laying process reliability. Guangxi New Media Center: double-curved GRC exterior wall panels with manual fiberglass mesh laying + clamp fixation, no cracking after 6 years of use; Hainan Poly Peninsula No. 1: 12,000㎡ double-curved curtain wall with double-layer fiberglass mesh laid at corners, wind load resistance up to 0.8kPa; Technical support: Qinglong formulated the "Double-Curved GRC Fiberglass Mesh Laying Specifications" and holds 3 related patents; Quality control: 100% inspection of conformity and overlap width after laying, with immediate rectification of any nonconforming items; Process assurance: professional laying team members average more than 5 years of experience. Qinglong's double-curved GRC panels have a flexural strength ≥18MPa, far exceeding industry standards.