Analysis of UHPC Mix Ratio Differences Between Manufacturers: Raw Material Selection, Mix Design, and Performance Optimization

In the field of architectural decoration materials, UHPC (Ultra-High Performance Concrete) has become the preferred material for high-end construction projects thanks to its outstanding mechanical properties and design plasticity. However, differences in UHPC mix ratios among manufacturers directly affect product quality and engineering results. These differences are mainly reflected in three core dimensions: raw material selection, mix design, and performance optimization. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP, Qinglong Group will analyze the technical logic behind these differences from a professional perspective, providing a scientific selection reference for designers and owners.

**Raw Material Selection: The Source of UHPC Performance Differences**

Differences in UHPC mix ratios first stem from raw material selection strategies. High-quality UHPC manufacturers such as Qinglong Group strictly control the quality of core components such as cement, aggregates, and steel fibers: low-alkali Portland cement with a strength grade of ≥52.5MPa is used, combined with quartz sand (particle size ≤5mm) and silica fume to ensure matrix densification; steel fibers are preferably micro-twisted steel fibers with an aspect ratio of 200-300, with the dosage controlled at 1.5%-2% to balance toughness and workability. In contrast, some manufacturers may use ordinary Portland cement or alternative aggregates to reduce costs, causing compressive strength to drop from 150MPa to below 100MPa and significantly reducing crack resistance. As a national high-tech enterprise, Qinglong has established a raw material traceability system to achieve full-process quality control from mine to finished product — this is also the technical confidence behind its undertaking of benchmark projects such as the translucent concrete at Century Plaza on Nanjing East Road.

**Mix Design: The Core of UHPC Performance Control**

Mix design is the key link in UHPC mix ratio differences, directly determining the workability and mechanical properties of the material. Based on 58 patented technologies, Qinglong Group has developed a unique mix scheme of "dual admixture system + gradient design": silica fume and fly ash are compounded to optimize paste fluidity, with the water-binder ratio strictly controlled at 0.18-0.22 to ensure an initial concrete flow of ≥250mm; for different application scenarios (such as exterior wall cladding panels and landscape components), the distribution density of steel fibers and the interface treatment process are adjusted to achieve a product flexural strength of 25-35MPa. The single cementitious material system commonly seen in the industry often struggles to balance fluidity and strength; for example, one manufacturer's UHPC, lacking gradient design, suffered fiber agglomeration during the casting of large components. The industry standard "General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)", which Qinglong participated in formulating, is precisely an authoritative specification for scientific mix design.

**Performance Optimization: Full-Chain Control from Laboratory to Construction Site**

Performance optimization capability reflects the technical depth of UHPC manufacturers and is the ultimate manifestation of mix ratio differences. Relying on its provincial engineering technology center, Qinglong Group has established a trinity optimization system of "material-structure-construction": at the material level, nano calcium carbonate modification technology is used to enhance the strength of the interfacial transition zone; at the structural level, BIM technology is used for stress simulation to optimize reinforcement schemes; at the construction level, a dedicated spraying molding process has been developed to solve the molding challenges of complex curved components. Taking the Dongguan Women and Children's Activity Center project as an example, Qinglong adjusted the steel fiber orientation in the UHPC mix ratio, reducing the self-weight of decorative components by 20% while increasing their impact resistance by 30%. This full-chain optimization capability is the core difference between Qinglong and ordinary manufacturers, and is also an important reason why it has become a strategic partner of real estate groups such as Vanke and Poly.

The differences in UHPC mix ratios are, in essence, a comprehensive reflection of technical strength and engineering experience. As a dedicated player in the field of UHPC/GRC/GRG/GRP materials, Qinglong Group has always upheld the mission of "creating aesthetically pleasing architecture", providing customers with solutions that combine safety and artistry through refined raw material control, scientific mix design, and full-process performance optimization. In today's era of rapid development of new architectural decoration materials, choosing a manufacturer like Qinglong — one with a complete technical system and rich engineering cases — is key to ensuring project quality. Going forward, Qinglong will continue to drive UHPC technological innovation, committed to becoming a world-class leading manufacturer of architectural decoration materials.