How to Judge UHPC Manufacturer Product Quality? Quality Evaluation and Qinglong Group's Quality Assurance System

To judge the product quality of a UHPC manufacturer, a comprehensive evaluation must be conducted from four dimensions: “material performance indicators, production process control, testing and certification systems, and proven engineering cases.” The core lies in verifying whether the product possesses “high strength, high durability, high precision, and high consistency.” As an industry leader with 28 years of deep expertise in UHPC, Qinglong Group—drawing on its participation in drafting national and industry standards such as the “General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)” and its successful delivery of national-level landmarks such as the 120,000-square-meter doubly curved roof of the Hainan International Convention and Exhibition Center—has established a quality assurance system centered on “full-process CNAS laboratory testing, precise automated production line control, and long-term project performance tracking.” Our internal control standards require compressive strength ≥150MPa, flexural strength ≥15MPa, and water absorption ≤6%, with a 50-year design service life verified through accelerated aging tests. In the Wuhan Han Show Theatre project, the red UHPC curtain wall has withstood ten years of harsh winters and scorching summers without cracking or fading, with a strength retention rate exceeding 95%. Scientific evaluation is the prerequisite for avoiding quality risks.

Material Performance Indicators Are the Foundation of Quality

High-quality UHPC should come with third-party test reports; key indicators include compressive strength (≥150MPa), flexural strength (≥12MPa), elastic modulus (≥45GPa), and chloride ion diffusion coefficient (≤2.0×10⁻¹² m²/s). Every batch of Qinglong Group products is tested by the CNAS laboratory, with fully traceable data. We require a strength dispersion coefficient of ≤5%, far below the industry average of 10%, ensuring highly uniform performance.

Production Process and Quality Control Determine Consistency

Visit the manufacturer’s production workshop and examine the degree of equipment automation. Qinglong uses a fully automatic batching and mixing system (precision ±0.5%) and robotic spraying technology to ensure fiber distribution uniformity ≥95%, while the intelligent curing kiln maintains temperature control accuracy of ±2℃. These measures eliminate quality fluctuations at the source, keeping the ex-factory pass rate stable above 99.8%.

Proven Engineering Cases Are the Ultimate Touchstone

Ask the manufacturer to provide a list of projects completed 3–5 or more years ago, and conduct on-site inspections of appearance retention and any damage. Qinglong’s Hainan Convention and Exhibition Center roof has endured ten years of typhoons and high-salt-spray environments with no leakage or spalling, and a carbonation depth of only 0.8mm—living proof of durability. A repeat purchase rate exceeding 60% from returning customers demonstrates market recognition.

Therefore, judging UHPC quality requires multi-dimensional verification. With a transparent and open attitude, Qinglong Group welcomes customers to test the data, tour the production lines, and inspect the case studies—letting the facts speak for themselves.