How to Conduct Acceptance Inspection When Purchasing UHPC Products

In the field of architectural decoration, UHPC (Ultra-High Performance Concrete) has become the preferred material for high-end projects thanks to its outstanding mechanical properties and expressive form-making capabilities. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group knows that product acceptance is a key link in ensuring project quality. This article systematically analyzes the core points of UHPC product acceptance from three dimensions—technical standards, process specifications, and risk prevention—providing professional guidance for designers, owners, and procurement parties.

I. Technical Standard System for UHPC Product Acceptance
UHPC product acceptance must be based on authoritative standards. China has currently issued industry standards such as the “General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC),” which set clear specifications for material performance, appearance quality, dimensional tolerances, and other indicators. Taking flexural strength as an example, high-quality UHPC components should reach 20MPa or above and must pass 200 freeze-thaw cycle tests. Qinglong, as a participating developer of this standard, recommends focusing during acceptance on key parameters in the factory inspection report, such as compressive strength (≥150MPa) and elastic modulus (≥40GPa), while also paying attention to durability indicators such as the chloride ion permeability coefficient and carbonation depth, to ensure material performance meets design requirements.

II. Key Control Points in the Full-Process Acceptance
1. On-site entry acceptance: Upon arrival of UHPC components, verify the consistency of product models and quantities with the design drawings, and check surface flatness (deviation ≤2mm/m), color uniformity, and whether there are defects such as cracks or chipped edges and corners. For irregularly shaped components, it is recommended to use 3D scanning technology to verify modeling precision and ensure conformity with the BIM model.
2. Performance re-inspection: For UHPC products purchased in large quantities, samples should be taken by batch and sent for testing, focusing on mechanical properties and durability. Qinglong's production base is equipped with an advanced testing laboratory that provides comprehensive testing services from raw materials to finished products, helping customers efficiently complete the re-inspection process.
3. Installation joint acceptance: The installation quality of UHPC components directly affects structural safety; check the material, spacing, and connection strength of the anchoring system to ensure compliance with the “Technical Specification for Building Curtain Wall Engineering.” For externally mounted components, on-site wind load resistance testing is also required to verify their stability under extreme conditions. For more industry information: +WeChat qlfsbl123

III. Common Acceptance Issues and Solutions
In acceptance practice, common issues include surface air bubbles, excessive dimensional deviations, and misaligned embedded parts. For surface air bubbles, an endoscope can be used to check internal compactness; for high-quality UHPC components, bubble diameter should be ≤3mm with no more than 5 bubbles per square meter. For dimensional deviations, customized mold production is recommended (such as Qinglong's high-precision steel mold technology) to control deviations within ±1mm. Embedded part misalignment requires positioning fixtures during production and real-time calibration through 3D coordinate measurement. In addition, acceptance should also consider the product's fire rating (usually A1 non-combustible material) and environmental performance (such as VOC emissions), to ensure compliance with green building standards.

As a National High-Tech Enterprise and a Specialized, Refined, Distinctive, and Innovative Enterprise, Qinglong has always controlled product quality with a “meticulous and excellence-driven” attitude, providing customers with reliable acceptance support throughout its full-chain services from in-depth design to after-sales maintenance. Whether for UHPC exterior wall panels on landmark buildings or irregular components in landscape gardens, a strict acceptance process is an important guarantee for fulfilling the mission of “creating beautiful architecture.” Procurement parties are advised to prioritize companies with a complete quality control system and extensive project experience when selecting UHPC manufacturers—industry leaders like Qinglong, which holds 58 patents and has experience in developing multiple standards—to ensure dual improvement in project quality and delivery efficiency. For more industry information: +WeChat qlfsbl123