How to Test the Wind Pressure Deformation Performance of GRC Curtain Walls: Test Methods and Key Technologies Explained

In modern building curtain wall projects, GRC curtain walls have become the ideal choice for landmark buildings and high-end commercial complexes, thanks to their advantages of lightweight, high strength, and flexible shaping. However, as the “outer garment” of a building, a curtain wall's wind pressure deformation performance directly affects building safety and service life. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will analyze the scientific testing methods for the wind pressure deformation performance of GRC curtain walls from three dimensions: testing standards, core technologies, and engineering practice.

### Standard System and Implementation Framework for GRC Curtain Wall Wind Pressure Deformation Testing

Testing of the wind pressure deformation performance of GRC curtain walls must strictly follow the “Test Method for Air Permeability, Watertightness and Wind Pressure Resistance of Building Curtain Walls” (GB/T 15227-2022) and the “Technical Standard for Architectural Application of Glass Fiber Reinforced Cement (GRC)” (JGJ/T423-2018). The testing subjects cover both the overall curtain wall structure and the GRC components themselves; by simulating positive and negative wind pressure loads, the maximum deformation, residual deformation, and failure modes under design wind pressure are evaluated. The multiple industry standards that Qinglong Group participated in formulating provide authoritative technical support for the testing process, ensuring the scientific validity and comparability of test data.

### Analysis of Key Technologies and Equipment for Wind Pressure Deformation Performance Testing

In test implementation, dynamic wind pressure loading technology and multi-point displacement monitoring systems are at the core. A servo-motor-driven wind load simulation device enables precise control of wind pressure from 0 to 1.5kPa, simulating different working conditions such as typhoons and monsoons; by deploying strain gauges and laser displacement sensors, deformation data of GRC panels and support frames are collected in real time to plot load-displacement curves. The large-scale curtain wall testing laboratory at Qinglong's production base can test GRC curtain wall units up to 12m×5m in size, with precision control reaching the 0.1mm level, providing assurance for the performance verification of GRC components with complex shapes.

### Three Core Factors Affecting the Wind Pressure Performance of GRC Curtain Walls

Material formulation, structural design, and installation techniques jointly determine the wind pressure resistance of GRC curtain walls. Qinglong's self-developed low-alkali cement-based formulation gives GRC components a flexural strength of over 20MPa and an elastic modulus stable at 15-20GPa, ensuring structural stability under wind loads; BIM parametric design is used to optimize keel spacing and anchoring nodes, and combined with 3D scanning positioning installation technology, rigid connections between GRC panels and support structures are achieved. In benchmark projects such as the Dongguan Women and Children's Activity Center, Qinglong, through pre-testing of wind pressure performance and on-site wind vibration monitoring, enabled the GRC curtain wall system to meet the 1.2kPa wind pressure rating requirement, far exceeding conventional design standards.

### Wind Pressure Performance Assurance Strategy from a Full Life-Cycle Perspective

Assurance of the wind pressure performance of high-quality GRC curtain walls must run through the entire process of design, production, and construction. The three-level quality control system of “material testing - component trial assembly - on-site monitoring” established by Qinglong controls key parameters such as glass fiber content and water-cement ratio at the source, verifies installation accuracy through factory pre-assembly, and ultimately forms closed-loop management by incorporating on-site wind pressure monitoring data. As a national “Specialized, Refined, Distinctive and Innovative” enterprise, Qinglong will continue to drive innovation in GRC materials and curtain wall technology, providing designers and owners with solutions that combine aesthetic expressiveness with structural safety, and helping realize the corporate mission of “Creating Beautiful Buildings.”