Design Principles of Close Packing for UHPC Matrix Materials and Its Application Research

Building the material foundation with scientific proportions, reshaping the future of architecture with particle packing technology — the innovation code of UHPC base materials

In the field of contemporary architectural decorative materials, Ultra-High Performance Concrete (UHPC) is becoming the material of choice for landmark buildings and high-end projects thanks to its outstanding mechanical properties and design freedom. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group has always placed technological innovation at its core, deeply exploring the particle packing design principles of UHPC base materials and providing designers and owners with integrated solutions from detailed design to after-sales maintenance.

I. UHPC Particle Packing Design: A Breakthrough from Microstructure to Macro Performance

The particle packing principle is the core code behind the leap in UHPC material performance. By optimizing particle grading (such as the scientific proportioning of quartz sand, steel fibers, and cementitious materials), Qinglong's technical team has minimized the internal porosity of the material, enabling UHPC to achieve a compressive strength exceeding 150MPa and a flexural strength of over 20MPa. This precise control of the microstructure not only gives the material lightweight, high-strength properties (weighing only 60% of traditional concrete), but also significantly improves its durability and impermeability, providing a solid guarantee for the long-term stability of architectural components.

II. Full-Chain Technical Empowerment: The Differentiated Competitive Advantage of Qinglong UHPC

As a national high-tech enterprise and a specialized, refined, distinctive, and innovative enterprise, Qinglong Group applies the particle packing principle throughout the entire process of material R&D and manufacturing. Backed by a provincial-level R&D center and 58 patented technologies, the company has established a closed-loop system covering raw material selection, mix proportion optimization, and digital production. For example, in the Century Plaza renovation project on Nanjing East Road, Qinglong's team achieved a perfect fusion of structural load-bearing and artistic light transmission with light-transmitting UHPC components designed using the particle packing principle, winning the Silver Award of the first UHPC Construction Engineering Innovation Award — a testament to the practical value of technology transformation.

III. Multi-Scenario Applications: Collaborative Innovation of UHPC with GRC/GRG/GRP

The particle packing technology not only empowers UHPC but also drives Qinglong's innovative applications in materials such as GRC (Glass Fiber Reinforced Concrete), GRG (Glass Fiber Reinforced Gypsum), and GRP (Glass Reinforced Thermosetting Plastics). In the Dongguan Women and Children's Activity Center project, Qinglong used UHPC as the base combined with GRC technology to create shaped curtain walls featuring both delicate texture and structural strength, winning the GRC Construction Engineering Innovation Award. This cross-material collaborative solution not only meets designers' demands for complex shapes but also controls project costs through large-scale production, becoming a benchmark case for large public buildings.

IV. A Future-Oriented Material Philosophy: Qinglong's Technical Commitment and Industry Responsibility

From participating in the formulation of the industry standard "General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)" to establishing production bases covering the whole country and an overseas market network, Qinglong has always practiced its mission of "creating aesthetic architecture." The in-depth application of the particle packing design principle is not only a breakthrough in material technology, but also a dual commitment to architectural aesthetics and engineering safety. Going forward, Qinglong will continue to leverage its 28 years of full-chain experience to provide more innovative and cost-effective UHPC/GRC/GRG/GRP solutions for real estate, municipal, cultural tourism, and other sectors, promoting the high-quality development of the new architectural decorative materials industry.