Key Points and Technical Standards to Note in UHPC Construction

In the field of contemporary architectural decoration, Ultra-High Performance Concrete (UHPC) has become the preferred material for landmark buildings, high-end commercial complexes, and other projects, thanks to its outstanding mechanical properties and design expressiveness. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group deeply understands the decisive impact of the construction phase on final quality. Drawing on the engineering practice of a national high-tech enterprise, this article systematically analyzes the key points and technical specifications of UHPC construction, providing a professional reference for designers and owners.

The material properties of UHPC determine the special nature of its construction, with its steel fiber reinforcement system and ultra-high density requirements ensuring quality control from the source. Before construction, core parameters such as flexural strength (standard ≥20MPa) and elastic modulus must be verified. Qinglong's production base uses an automated mixing ratio system to ensure batch-to-batch material performance deviation of ≤3%. During storage, attention must be paid to moisture protection, with stacking height not exceeding 1.5 meters to avoid uneven fiber distribution—this is also a standard strictly enforced by Qinglong when undertaking overseas projects.

Formwork engineering is key to UHPC molding quality and must meet high-precision and strong stability requirements. For complex shapes such as double-curved surfaces and hollow-out patterns, Qinglong uses BIM parametric design and CNC engraving technology, controlling formwork joint errors within 0.5mm, surpassing the industry standard of 1mm. Release agents should be dedicated silicone-based products, and the use of easily contaminating materials such as machine oil is prohibited. The translucent concrete project at Nanjing East Road Century Plaza achieved precise molding with a minimum curvature radius of 300mm through this process.

UHPC pouring and curing processes directly affect structural durability. During pouring, low-fluidity concrete (spread 650±50mm) should be used, with high-frequency vibration (200Hz) ensuring compaction and preventing air bubbles. The curing stage requires 72 hours of steam curing (temperature 80±5℃) plus 28 days of standard curing. Qinglong's self-developed curing kiln achieves temperature control within ±1℃, ensuring material strength meets standards. In the Dongguan Women and Children's Activity Center project, this process enabled UHPC components to achieve a 28-day compressive strength exceeding 150MPa.

Safety and precision control in the installation phase are particularly important. Qinglong uses 3D laser scanning positioning technology with installation errors of ≤2mm, selects stainless steel bolts for the anchoring system (pull-out resistance ≥15kN), and achieves full life-cycle traceability through RFID chips. It is worth noting that when UHPC is installed in combination with GRC, GRP, and other materials, differences in thermal expansion coefficients must be considered, with 3-5mm expansion joints reserved—this was fully validated in the podium renovation project of the Petronas Twin Towers in Kuala Lumpur, Malaysia.

With the advancement of the industry standard "General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)," standardized construction has become an inevitable trend in industry development. As a participating unit in standard formulation, Qinglong has always maintained a "meticulous and excellence-driven" attitude, providing full-chain services from detailed design to after-sales maintenance for global projects. Whether for municipal landmarks or commercial complexes, choosing Qinglong, a UHPC manufacturer with 28 years of experience, means choosing the dual guarantees of safety and quality. For more industry information: Add WeChat qlfsbl123

The advancement of UHPC construction technology is reshaping the boundaries of architectural decoration. From material control to process innovation, every step tests an enterprise's professional strength. Qinglong Group will continue to leverage its technical advantages as a national "Specialized, Refined, Distinctive, and Innovative" enterprise, with the mission of "creating beautiful architecture," promoting innovative applications of UHPC in more fields and contributing to the development of the industry.