Analysis of Special Requirements and Key Construction Points for Glass Fiber Mesh Laying in Double-Curved GRC Panels

The artistic expressiveness of double-curved GRC panels begins with millimeter-level precision in fiberglass mesh laying. As the Qinglong Group with 28 years of deep industry experience, we understand that every process detail serves as a dual guarantee of both architectural aesthetics and structural safety.

In the double-curved curtain walls of high-end buildings such as grand theaters and museums, GRC materials have become the first choice for designers thanks to their lightweight high-strength properties and flexible shaping advantages. As the "backbone" of GRC panels, the fiberglass mesh laying process directly determines the crack resistance and durability of double-curved components. Drawing on Qinglong Group's practical experience in participating in the formulation of the Technical Standard for Building Applications of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), this article systematically analyzes the special requirements and key construction points of fiberglass mesh laying for double-curved GRC panels.

Special Process Requirements of Double-Curved GRC Panels for Fiberglass Mesh Laying

The spatial curvature variations of double-curved shapes present three major technical challenges for fiberglass mesh laying: first, surface conformity must reach over 99% to avoid stress concentration caused by wrinkles; second, fiber orientation must be arranged according to the radius of curvature—0°/90° orthogonal laying in concave areas, with an additional 45° diagonal layer in convex areas to enhance flexural strength; third, the overlap width must be increased by 20% compared with flat components to ensure a continuous load-bearing system at curvature transitions. Qinglong's production base adopts 3D scanning positioning technology combined with customized fiberglass mesh cutting molds, enabling precise laying of double-curved components with a minimum radius of curvature of 300mm.

Analysis of Key Control Points in Fiberglass Mesh Laying Construction

During the detailed design phase, BIM models should be used to simulate the fiberglass mesh layout, with emphasis on marking the laying schemes for areas with abrupt curvature changes. The production process adopts the "layer-by-layer impregnation method": after spraying a first layer of GRC matrix 5mm thick, the first layer of fiberglass mesh is laid immediately, using a dedicated roller to compact and expel air along the curvature direction; after the second layer of matrix is sprayed, the second layer of fiberglass mesh is laid, with the overlap length between the two mesh layers no less than 100mm and seams staggered. Qinglong's proprietary "transparent formwork" process allows direct visual monitoring of whether the fiberglass mesh embedment depth is controlled within the golden range of 2-3mm, preventing mesh exposure caused by insufficient depth or reduced strength caused by excessive depth.

Practical Application of the Full-Chain Quality Control System

As a National High-Tech Enterprise, Qinglong has established full-process control standards ranging from raw material inspection to finished product curing. Incoming fiberglass mesh must pass dual inspections for alkali resistance retention (≥75%) and breaking strength (≥1800N/50mm), and the construction process uses RFID chips to trace the laying parameters of each component. In award-winning projects such as the Dongguan Women and Children's Activity Center, strict implementation of the fiberglass mesh laying process has enabled double-curved GRC panels to achieve a 15-year zero-cracking engineering record, far exceeding the industry average.

The charm of double-curved GRC panels lies in the perfect fusion of architectural art and materials science, and the fiberglass mesh laying process is the key link in this fusion. Supported by 28 years of full-chain experience, Qinglong Group continues to drive application breakthroughs of GRC materials in the high-end building sector through technological innovation and standard formulation. Going forward, we will continue to uphold the philosophy of "meticulousness and constant improvement," providing designers with more expressive material solutions, so that every double-curved shape becomes an architectural artwork that stands the test of time.