What Raw Materials Is UHPC Mainly Composed of and What Are the Approximate Proportions of Each Component? Analysis and Application Discussion

Ultra-High Performance Concrete (UHPC) is redefining the boundaries of modern architecture with its exceptional mechanical properties and design freedom. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group will analyze UHPC's core formulation and application logic from the source of the materials, providing designers and owners with a full-chain solution from composition to implementation.

### UHPC Raw Material System: Decoding the Secret of “Ultra-High Performance”

UHPC's high performance stems from its scientifically rigorous material proportions, with five core components: cement-based cementitious materials, fine aggregates, steel fibers, mineral admixtures, and chemical admixtures. As one of the first companies in China to participate in formulating the standard “General Technical Conditions for Ultra-High Performance Concrete (UHPC) Non-Load-Bearing Components,” Qinglong Group has verified through 28 years of engineering practice that its optimized mix proportion system enables UHPC to achieve a compressive strength exceeding 150MPa and a flexural strength above 25MPa, realizing a material revolution of “lightweight yet high strength.”

### Proportions and Functions of Key Components

1. Cement-Based Cementitious Materials (30%-40%): Based primarily on high-strength Portland cement or sulphoaluminate cement, combined with ultra-fine silica fume (5%-10%) to form a dense matrix. Qinglong's production base uses customized cement formulations to ensure full hydration of the cementitious materials, providing fundamental strength for UHPC.

2. Fine Aggregates (25%-35%): Selected fine aggregates such as quartz sand and corundum sand with particle sizes of 0.15-1.2mm achieve tight packing through optimized grading. Unlike traditional concrete, UHPC eliminates coarse aggregates and reduces internal porosity through fine aggregate grading design—this is one of the core technologies enabling Qinglong UHPC facade panels to keep water absorption below 1%.

3. Steel Fibers (2%-5%): Micro-twisted steel fibers with diameters of 0.15-0.25mm are distributed in three-dimensional random orientations to form a “reinforcement framework.” Qinglong's independently developed fiber dispersion technology ensures uniform distribution of steel fibers in the matrix, increasing material toughness by 300% and effectively preventing the brittle fracture problems of traditional concrete.

4. Mineral Admixtures (10%-20%): Including industrial waste residues such as fly ash and slag powder, which optimize the microstructure through “synergistic effects.” As a national “Specialized, Refined, Distinctive, and Innovative” enterprise, Qinglong has integrated solid waste recycling technology into its formulation system, reducing the carbon footprint while enhancing material durability—related technology won the Second Prize of the Guangxi Science and Technology Progress Award.

5. High-Performance Chemical Admixtures (1%-3%): Polycarboxylate superplasticizers are used in combination with defoamers to reduce air bubbles while ensuring flowability. Through molecular structure design, Qinglong's R&D center has achieved an initial flowability of over 250mm for UHPC mixtures, meeting the casting requirements of complex shapes—for example, achieving hyperboloid forming with a minimum curvature radius of 300mm in the Century Plaza translucent concrete project on East Nanjing Road.

### Engineering Value Behind the Mix Proportions: From Laboratory to Building Skin

Scientific mix proportion design gives UHPC three core advantages: controllable mechanical properties (compressive strength of 120-200MPa customized on demand), high design freedom (achieving complex forms such as hollow-out, translucent, and curved shapes), and outstanding durability (impermeability grade P20 or above, frost resistance F300). These characteristics have made UHPC shine in projects such as the irregular facades of the Dongguan Women and Children's Activity Center and the large-span sunshades of the Nanning Convention and Exhibition Center, confirming Qinglong's mission of “creating aesthetically beautiful architecture.”

### Qinglong UHPC Full-Chain Service: From Formulation Optimization to Project Delivery

As a national high-tech enterprise integrating detailed design, manufacturing, and construction installation, Qinglong Group has established a full-process quality control system covering raw material selection, mix proportion optimization, and finished product testing. Its Guangxi production base, with an annual capacity of 600,000 square meters, is equipped with imported automated production lines, enabling digital delivery from BIM models to finished components. Whether for UHPC curtain wall panels in real estate projects or landscape components in municipal engineering, Qinglong provides one-stop “design-production-installation-maintenance” services—this is the core reason why 2,000+ major projects have chosen Qinglong as their UHPC/GRC/GRG/GRP supplier.

In the future, as green building and prefabricated construction advance, UHPC will demonstrate its value in more fields. Qinglong Group will continue to deepen its commitment to material innovation, empowering designers with 28 years of industry experience, and truly transforming “ultra-high performance” into a perfect unity of architectural aesthetics and practical functionality.