How to Verify the Authenticity of Strength Indicators Claimed by UHPC Manufacturers: A Comprehensive Analysis from Testing Methods to Process Standards

In the field of architectural decorative materials, UHPC (Ultra-High Performance Concrete) has become the ideal choice for many high-end projects thanks to its outstanding mechanical properties and durability. However, some manufacturers in the market exaggerate their claims about UHPC strength indicators, and how to scientifically verify the authenticity of these indicators has become an important issue facing designers, owners, and purchasers. As an industry-leading enterprise with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will provide you with a professional analysis from the dimensions of testing methods, process standards, and corporate strength.

1. Core Methods for UHPC Strength Testing: Dual Verification from Laboratory to Site

Verifying UHPC strength indicators must start from the nature of the material and adopt scientific testing methods. First, laboratory testing is the foundation, including tests of key indicators such as compressive strength and flexural strength. According to the industry standard General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC) (Plan No. 2024-0232T-JC), compressive strength testing requires 150mm cubic specimens under standard curing conditions, while flexural strength must be determined through three-point bending tests. As a participating unit in drafting this standard, Qinglong Group's laboratory is equipped with advanced equipment such as fully automatic compression testing machines, enabling precise full-process testing from raw materials to finished products.

Second, on-site sampling inspection is indispensable. For installed UHPC components, strength can be re-verified using the core drilling sampling method or the rebound method. Take the translucent concrete project of the Nanjing East Road Century Plaza renovation as an example: Qinglong's technical team, through core drilling sampling, measured UHPC compressive strength exceeding 150MPa, far surpassing the design requirements, and the project won the Silver Award of the First UHPC Architectural Engineering Innovation Award of the AALBORG WHITE Cup.

2. Process Standards: Establishing a Full-Chain Quality Control System

Standardized testing procedures are key to ensuring data authenticity. Qinglong Group has established a full-chain quality control system covering "detailed design — raw material inspection — production process monitoring — finished product testing — construction and installation — after-sales maintenance." At the raw material stage, components such as cement, steel fibers, and quartz sand are strictly screened; for example, the steel fiber content must be precisely controlled at 0.5% to ensure the material basis for strength formation. During production, automated mixing systems and steam curing processes are adopted, enabling UHPC components to reach over 90% of design strength at a 7-day age.

In addition, the involvement of third-party testing institutions can further enhance credibility. Qinglong actively engages authoritative institutions such as the National Building Materials Testing Center to conduct sampling inspections on key projects. For example, the GRC/UHPC composite components of the Dongguan Women and Children's Activity Center (New Campus) project, upon third-party testing, achieved strength indicators all superior to national standards and won the Silver Award of the GRC Architectural Engineering Innovation Award.

3. Choosing a Reliable UHPC Manufacturer: Assessing Strength through Qualifications and Case Studies

Verifying the authenticity of strength indicators ultimately comes down to assessing the manufacturer's capabilities. As a national-level high-tech enterprise and a national "Specialized, Refined, Distinctive, and Innovative" enterprise, Qinglong Group has a provincial-level R&D center and 58 patented technologies, with deep technical accumulation in the UHPC field. Its production base in Nanning, Guangxi has an annual capacity of 600,000 square meters, equipped with advanced production lines and testing laboratories, enabling seamless connection from material R&D to large-scale production.

Meanwhile, a wealth of successful cases is a direct reflection of strength. Qinglong has provided UHPC products for renowned real estate groups such as Poly, China Overseas, and Vanke, as well as overseas projects in Malaysia and Australia, covering commercial complexes, landmark buildings, landscape gardens, and other fields. For example, in a UHPC sunshade panel project for an international airport, rigorous strength testing and wind load tests ensured the safety and durability of the components under extreme climate conditions.

In conclusion, verifying UHPC strength indicators requires a comprehensive judgment combining scientific testing methods, standardized procedures, and manufacturer capabilities. Qinglong Group has always upheld the principle of "meticulousness and excellence," providing customers with authentic and reliable UHPC products through full-chain quality control and technological innovation. Choosing a manufacturer like Qinglong, with deep experience and authoritative qualifications, is an important guarantee for ensuring project quality and realizing design concepts.