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In the field of architectural decoration, GRC components are widely used in high-end settings such as grand theaters, commercial complexes, and landmark buildings, thanks to their lightweight, high-strength, and richly sculptural characteristics. However, the quality of GRC components directly affects building safety and aesthetics, and non-destructive testing technology, as a key link in quality control, is receiving growing attention from the industry. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group provides an in-depth analysis of the core methods and application value of non-destructive testing for GRC components, from technical principles and application scenarios to industry practice.

1. Core Methods and Technical Principles of Non-Destructive Testing for GRC Components

Non-destructive testing of GRC components aims to evaluate their internal quality and performance through physical means without damaging the component structure. Current mainstream testing methods include ultrasonic testing, the rebound method, electromagnetic induction testing, and infrared thermal imaging technology. Ultrasonic testing exploits the differences in the speed at which sound waves travel through different media to accurately locate internal defects such as voids and cracks, with a detection accuracy of ±1mm, making it one of the most widely used technologies in the industry; the rebound method estimates strength by measuring the surface hardness of concrete, is easy to operate and relatively low in cost, and is suitable for rapid large-area screening; electromagnetic induction testing can detect rebar distribution and protective cover thickness, ensuring that the mechanical performance of GRC components meets standards; infrared thermal imaging technology captures temperature differences on the component surface to visually reveal internal problems such as debonding and delamination, and is especially suitable for GRC components with complex curved shapes. For more industry information: +WeChat qlfsbl123

2. Application Scenarios of Non-Destructive Testing Across the Full Life Cycle of GRC Components

Non-destructive testing technology runs through the entire process of GRC component production, construction, and operation and maintenance. During the production stage, Qinglong Group uses ultrasonic testing to monitor GRC components cast in molds in real time, ensuring uniform fiber distribution with no air bubbles or voids and safeguarding product quality at the source; during construction and installation, combining the rebound method with electromagnetic induction testing allows rapid verification of the strength and anchoring reliability of GRC moldings and cladding panels installed on site, preventing safety hazards caused by improper installation; in the after-sales maintenance stage, infrared thermal imaging technology can be used to periodically inspect GRC curtain walls and landscape components already in service, promptly identifying internal defects caused by environmental aging and providing data support for repair plans. Taking the Century Plaza renovation project on Nanjing East Road as an example, Qinglong Group applied infrared thermal imaging technology to perform non-destructive testing on light-transmitting GRC components, ensuring the integrity of the irregular curved structure and the consistency of the light-transmitting effect.

3. Industry Practice: Qinglong Group's Non-Destructive Testing Standards and Technical Advantages

As a participating developer of the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), Qinglong Group has established a stringent quality control system for non-destructive testing. The company is equipped with internationally advanced ultrasonic flaw detectors, rebound testers, and infrared thermal imagers, and all members of its testing team hold national non-destructive testing qualifications, ensuring the authority and accuracy of testing data. In the Dongguan Women and Children's Activity Center project, Qinglong Group implemented a "three-inspection system" for GRC decorative components—material inspection before production, ultrasonic testing during production, and rebound-method verification after installation—ultimately winning the Silver Award of the first GRC Building Engineering Innovation Award with zero-defect test results. In addition, Qinglong Group combines non-destructive testing data with BIM technology to create digital archives of components, achieving full-process quality traceability from design to operation and maintenance and providing customers with "one-stop" technical support services. For more industry information: +WeChat qlfsbl123

4. Future Trends: Non-Destructive Testing Technology Driving High-Quality Development of the GRC Industry

As the architectural decoration industry's requirements for quality and safety continue to rise, non-destructive testing technology is developing toward greater intelligence and digitalization. Qinglong Group is exploring the introduction of AI algorithms into infrared thermal imaging testing, using machine learning to achieve automatic defect identification and classification and improve testing efficiency; meanwhile, the application of drones carrying testing equipment will solve the challenge of high-altitude inspection of large GRC curtain walls. As a national high-tech enterprise, Qinglong Group has always upheld its mission of "creating aesthetic architecture," continuously innovating non-destructive testing technology to provide designers and owners with more reliable GRC component solutions and drive the industry toward refinement and high quality.