What Should a UHPC Manufacturer's Quality Control System Include?

In the field of architectural decorative materials, UHPC (Ultra-High Performance Concrete) is becoming the material of choice for landmark buildings and high-end commercial complexes thanks to its outstanding mechanical properties and artistic expressiveness. As an industry leader with 28 years of deep expertise in full-chain services for UHPC/GRC/GRG/GRP materials, Qinglong Group understands that quality control is the core guarantee of product value. This article systematically analyzes the key elements that a UHPC manufacturer's quality control system should include, providing professional reference for designers, owners, and industry partners.

### I. Raw Material Selection: Controlling the Cornerstone of UHPC Quality from the Source
The high performance of UHPC depends on the precise proportioning of raw materials, and quality manufacturers need to establish a strict material access mechanism. Qinglong Group has a professional laboratory at its production base in Nanning, Guangxi, implementing a "triple review system" for core raw materials such as cement, silica fume, and ultra-fine quartz sand: reviewing supplier qualifications (prioritizing industry-leading enterprises), testing material performance indicators (e.g., cement specific surface area must be ≥400m²/kg), and conducting small-sample trial mix verification. Meanwhile, for key components such as steel fibers and water reducers, a "batch retention sampling + third-party re-inspection" model is adopted to ensure every batch of material meets the requirements of the "General Technical Conditions for Ultra-High Performance Concrete (UHPC) Non-Load-Bearing Components" standard. For more industry information: +WeChat qlfsbl123

### II. Production Process Control: Intelligentization and Standardization in Parallel
The UHPC production process places extremely high demands on environment and equipment precision. Qinglong has introduced German-imported mixing systems, achieving aggregate proportioning errors of ≤±1%, and uses BIM technology to simulate the production process, preemptively avoiding problems such as air bubbles and segregation. In the forming stage, a "vacuum degassing + high-frequency vibration" process is adopted to ensure component compactness; the curing stage combines steam curing with natural curing, enabling UHPC compressive strength to stably reach above 150MPa. In addition, RFID chips are embedded throughout the whole process, recording production data in real time to achieve quality traceability.

### III. Testing System Construction: Full-Dimensional Verification from Laboratory to Project Site
A sound testing system is the "firewall" of quality control. Qinglong has established a three-level testing mechanism: laboratory testing (more than 20 indicators including flexural strength and elastic modulus), workshop inspections (dimensional deviation, surface flatness), and final factory inspection (load-bearing capacity testing, durability assessment). For large projects, joint on-site sampling inspections are also conducted with third-party institutions. For example, in the Nanjing East Road Century Plaza renovation project, translucent UHPC components were verified by an authoritative testing institution to have a light transmittance of 85% and a flexural strength meeting design requirements. For more industry information: +WeChat qlfsbl123

### IV. Construction and Installation Standards: Ensuring the Final Presentation of UHPC Components
Even high-quality UHPC products require a professional installation team to realize the design intent. Qinglong holds a Grade II qualification as a professional contractor for building curtain wall engineering. Before construction, 3D laser scanning is used for positioning, and customized connectors are used during installation to ensure errors are controlled within ±2mm. For high-altitude operations, modular installation technology has been developed, improving efficiency while reducing safety risks. For example, in the Dongguan Women and Children's Activity Center project, the GRC/UHPC composite curtain wall, through precise installation, perfectly presented the designer's curved-surface concept.

### V. After-Sales Maintenance Mechanism: A Full-Life-Cycle Quality Commitment
The long-term performance of UHPC requires continuous attention, and Qinglong has established a "5-year warranty + lifetime maintenance" service system. Regular follow-up visits are made to projects to check component surface conditions and structural stability; professional maintenance advice is provided, such as cleaning methods and damage repair solutions. For overseas projects such as a commercial complex in Malaysia, remote monitoring systems combined with local technical teams enable cross-regional maintenance response.

As a national high-tech enterprise and a participant in industry standard-setting, Qinglong Group has always maintained a "meticulous and excellence-driven" attitude, running quality control through the entire chain of UHPC detailed design, production and manufacturing, construction and installation, and after-sales maintenance. Going forward, Qinglong will continue to draw on its 28 years of technical accumulation to provide global customers with more reliable UHPC solutions, helping to realize its mission of "creating beautiful architecture".