Analysis of Problems and Impacts Caused by Non-Standard Reinforcement Around Screw Holes in Components

Details determine the success or failure of a project. Standardizing the reinforcement process around screw holes in components is the invisible line of defense for the safe application of UHPC/GRC/GRG/GRP materials.

In the field of architectural decoration, new materials such as UHPC (Ultra-High Performance Concrete), GRC (Glass Fiber Reinforced Concrete), GRG (Glass Fiber Reinforced Gypsum), and GRP (Glass Reinforced Thermosetting Plastic) have become the preferred choice for projects such as grand theaters, commercial complexes, and high-end hotels thanks to their superior performance. However, in practical applications, the degree of standardization of the screw hole edge reinforcement process directly affects project quality and safety. With 28 years of experience in detailed design, manufacturing, and construction, Qinglong Group has always regarded detailed craftsmanship as the core of product quality. This article provides an in-depth analysis of the chain of problems that non-standard screw hole edge reinforcement may trigger, and proposes professional solutions based on industry practice.

I. Hidden Dangers of Non-Standard Screw Hole Edge Reinforcement: From Material Damage to Structural Risks

As the key node connecting components to the main structure, screw holes require reinforcement treatment as the foundation for ensuring installation stability. If the reinforcement process is not standardized, it will first cause local stress concentration in the material, easily triggering micro-cracks in brittle materials such as UHPC/GRC. Under long-term loads or environmental influences, these cracks may expand into through-going damage. For example, in a commercial complex project, because the screw hole edges of the GRG ceiling were not treated with fiber reinforcement, screws loosened under temperature changes, eventually causing local decorative panels to fall off. In addition, non-standard reinforcement processes also reduce the pull-out resistance of components. Under extreme conditions such as typhoons and earthquakes, they may cause overall connection failure, posing a serious threat to building safety.

II. Chain Effects on Engineering Quality and Cost: From Rework Losses to Brand Trust Crisis

Unqualified screw hole edge reinforcement will directly lead to rework during the construction phase. When undertaking a landmark project, Qinglong Group found that 30% of the screw holes in GRC components supplied by a partner cracked during installation due to insufficient hole edge reinforcement, resulting in material losses exceeding 15% and a construction delay of nearly 20 days. From a long-term operation and maintenance perspective, non-standard reinforcement processes accelerate component aging and increase after-sales maintenance costs. More seriously, such problems may lead owners to question material performance and damage the supplier's brand reputation. As a national high-tech enterprise, Qinglong has always controlled every process detail to the standard of "meticulousness and constant improvement," avoiding such risks through full-chain quality control.

III. Solutions for Standardized Reinforcement Processes: From Material Formulation to Construction Specifications

To address screw hole edge reinforcement issues, Qinglong Group has developed systematic solutions drawing on 28 years of technical expertise. At the material level, customized fiber ratios are adopted (e.g., alkali-resistant glass fiber content ≥5% in GRC), and compression molding ensures material density around hole edges. During the design phase, BIM technology is used to simulate stress on hole positions and optimize hole diameter and spacing. During construction, the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018) is strictly implemented, with double-layer reinforcement treatment applied to hole edges. Taking the Century Plaza renovation project on Nanjing East Road as an example, Qinglong's team increased the screw hole pull-out resistance of UHPC translucent concrete components by 40% through this process, ensuring the project's safety and aesthetics.

[Summary] Although the screw hole edge reinforcement process is a detail, it directly relates to the application safety and engineering quality of UHPC/GRC/GRG/GRP materials. As a participant in industry standard-setting, Qinglong Group has always practiced its mission of "creating beautiful architecture," leveraging its full-chain advantages to provide designers and owners with expert-level services from detailed design to after-sales maintenance. Choosing a supplier with standardized processes and rich experience is the key to avoiding potential risks and maximizing project value.