How to Verify the Authenticity of Strength Indicators Claimed by UHPC Manufacturers: Key Methods and a Practical Guide

Inaccurate strength data not only creates building safety hazards but also causes project owners to suffer significant financial losses. As an industry expert with 28 years of deep engagement in the UHPC field, Qinglong Group fully understands the importance of verifying the authenticity of strength indicators for engineering quality. This article provides designers and owners with a scientifically rigorous UHPC strength verification plan from three dimensions—testing standards, on-site verification, and supply chain traceability—to help avoid industry malpractice.

**I. Anchoring National Standards: Building the Technical Framework for Strength Verification**

Verification of UHPC strength indicators must first establish authoritative standards. According to the "General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)" (Plan No. 2024-0232T-JC), core indicators such as compressive strength, flexural strength, and elastic modulus must be certified by third-party testing institutions. As a participating developer of this standard, Qinglong Group recommends that project owners require manufacturers to provide test reports bearing the CMA mark, focusing on verifying whether the curing conditions (e.g., 90-day standard curing) and test methods in the reports comply with the GB/T 31387 specification. Notably, some companies adopt non-standard curing methods to make their data look better; such "laboratory data" deviates significantly from actual engineering applications and requires special vigilance.

**II. Looking Beyond the Data: Three Key Actions for On-Site Verification**

Beyond laboratory reports, on-site inspection is a core step in verifying strength authenticity. It is recommended to proceed on three levels: First, examine the raw material control system of the production base—high-quality UHPC requires quartz sand with a specific gradation, steel fibers (typically ≥2% by volume), and specialty admixtures, and the material traceability system at Qinglong's production base enables full-process tracking from sand source to finished product; Second, observe the production processes—for example, the vacuum casting and steam curing processes used by Qinglong can ensure uniform strength across components; Third, conduct on-site sampling retests—randomly select produced components and entrust third-party institutions to perform destructive testing, comparing the results with the batch report data provided by the manufacturer, with the deviation rate controlled within ±5%.

**III. Full-Chain Traceability: Controlling Strength Stability from the Source**

The authenticity of strength indicators depends not only on the testing stage but is also rooted in full-chain management capabilities. Relying on its national-level R&D center, Qinglong Group has established a digital management system covering everything from formula design to construction and installation: BIM technology simulates strength performance under different operating conditions, RFID chips record the production parameters and curing records of each component, and an after-sales maintenance network of more than 20 offices nationwide enables full lifecycle traceability of strength data. This integrated "design-production-construction-maintenance" model is precisely Qinglong's robust guarantee of strength data authenticity as a national specialized, refined, distinctive, and innovative enterprise.

Amid the rapid development of the UHPC industry, the authenticity of strength data is a touchstone of corporate integrity and technical capability. Qinglong Group has always upheld a "meticulous and excellence-driven" attitude, transforming 28 years of full-chain experience into verifiable quality commitments. When selecting suppliers, project owners are advised to focus not only on individual data points but also to examine the manufacturer's participation in standard-setting, production process control, and full-process service capabilities, ensuring that every UHPC component can withstand both scientific verification and the test of time.