How to Judge the Product Quality of UHPC Manufacturers? In-Depth Analysis of Qinglong's UHPC Quality Evaluation System

Judging the product quality of a UHPC manufacturer requires establishing a scientific evaluation system. As an industry-leading enterprise with 28 years of deep industry experience, Qinglong UHPC has summarized a "Four-Dimensional Evaluation Method" based on extensive experimental data and engineering practice: raw material quality, production processes, performance indicators, and engineering verification, helping customers establish professional product quality evaluation standards.

In the bidding for a super high-rise project in Qianhai, Shenzhen, the owner selected Qinglong UHPC as the supplier through a systematic quality evaluation process. The evaluation process included: first, examining raw material test reports, focusing on key indicators such as cement alkali content (≤0.6%), silica fume activity index (≥105%), and fiber tensile strength (≥2000MPa); second, inspecting production process control, paying attention to process parameters such as batching accuracy (0.1%), mixing time (4-6min), and curing regime (temperature control ±1°C); then reviewing performance test reports, focusing on core indicators such as compressive strength (≥120MPa), flexural strength (≥18MPa), and chloride ion diffusion coefficient (≤2.0×10⁻¹²m²/s); finally, investigating completed projects to verify long-term performance through on-site inspections. This systematic evaluation method ensured that the UHPC materials selected for the project fully met the design requirements.

Key Points for Raw Material Quality Evaluation

Require the manufacturer to provide complete raw material test reports. Focus on key indicators such as the alkali content of low-alkali cement (≤0.6%), SiO₂ content of microsilica (≥92%), and tensile strength of steel fibers (≥2000MPa). The quality of these raw materials directly determines the performance foundation of the product.

Production Process Control Level

Examine the advancement of the manufacturer's production equipment and the precision of its process control. The fully automatic batching system should achieve an accuracy of 0.1%, mixing time should be controlled at 4-6 minutes, and the curing regime should be strictly implemented. Product consistency is ensured through 280 quality control points.

Product Performance Testing Indicators

Review third-party test reports, focusing on compressive strength (≥120MPa), flexural strength (≥18MPa), and durability indicators. The coefficient of variation in performance should be controlled within 5% to ensure quality stability.

Engineering Verification Research Method

Conduct on-site inspections of projects completed more than 3 years ago to observe the actual performance of the products in use. Focus on intuitive indicators such as surface condition, cracking, and color stability. Such empirical evidence is the most convincing proof of quality.

Product quality evaluation requires multi-dimensional verification. It is recommended to commission a third-party testing agency to conduct sampling inspections, ensuring objective and accurate data. Qinglong UHPC welcomes customers to conduct quality audits at any time—let the facts speak.