How to Verify the Authenticity of Strength Indicators Claimed by UHPC Manufacturers?

To verify the authenticity of the strength indicators claimed by UHPC manufacturers (compressive strength ≥120MPa, flexural strength ≥15MPa), you need to go through four levels of verification: "authoritative test reports, sample testing, on-site factory inspection, and project traceability," with industry standards and third-party testing at the core. With its CNAS-accredited laboratory, participation in standard-setting, and major project cases, Qinglong ensures full traceability of its strength indicators. Projects such as the Shanghai Astronomy Museum and Yangshengtang Pharmaceutical have all passed dual verification.

I. Verify Authoritative Test Reports: Core Credential Verification

Test reports are the fundamental credentials for verifying strength authenticity. Report qualifications: third-party authoritative institutions (such as SGS, CTC) should provide test reports stamped with CMA/CNAS seals; every batch of Qinglong products comes with such reports, and test data can be checked on the official website. Indicator matching: the compressive and flexural strengths in the report must be clearly marked, with values no lower than the manufacturer's claimed figures; the measured compressive strength of Qinglong UHPC panels reaches 130-150MPa, far exceeding the claimed 120MPa. Testing standards: reports must be based on industry standards such as "Ultra-High Performance Concrete (UHPC) Exterior Wall Panels" (T/CBMF171-2022); Qinglong's testing strictly follows standard procedures, ensuring highly credible data.

II. Sample Testing and On-Site Inspection: Direct Verification of Capability

Sample and factory inspections allow direct assessment of strength reliability. Sample submission: request same-batch samples from the manufacturer and send them yourself to a third-party institution for testing; Qinglong supports customer sampling and submission for testing, with a 99.8% pass rate. Destructive sample testing: perform simple compressive/flexural tests on samples (such as striking with a heavy object or pressing under pressure); high-quality UHPC panels show no cracking or obvious deformation, and Qinglong samples remain undamaged after impact from a 5kg heavy object. Factory inspection: examine production equipment (high-pressure vibrators, automated batching systems) and curing facilities (steam curing kilns), as the level of equipment advancement directly affects strength stability; Qinglong has 5 automated production lines and curing kilns covering 500 ㎡, ensuring uniform strength.

III. Project Traceability and Industry Endorsement: Basis for Long-Term Verification

Past projects and industry standing can substantiate strength stability. Major project cases: look up landmark and central state-owned enterprise projects the manufacturer has participated in, as such projects enforce strict strength testing; the Qinglong UHPC sculptures over 3 meters tall at the Shanghai Astronomy Museum achieve a compressive strength of 140MPa with no deformation after long-term use. Industry endorsement: manufacturers that participate in UHPC standard-setting and hold high-tech enterprise qualifications have more assured technical strength; Qinglong participated in drafting "General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)" and holds 58 patents. Customer reputation: consult the manufacturer's past customers to learn about strength degradation after long-term product use; the Qinglong UHPC panels at Yangshengtang Pharmaceutical's Hangzhou Industrial Park have been in use for 5 years with a strength retention rate ≥95%, earning written recognition from the customer.