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

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

Raw material selection is the fundamental source of differences in UHPC mix ratios. High-quality UHPC production imposes strict requirements on raw material purity and activity. For example, the cement must be Portland cement with a strength grade no lower than 52.5, and the silica fume must have a silicon dioxide content of ≥90% and a specific surface area of ≥15000m²/kg. Qinglong Group has established a standardized raw material supply chain at its production base in Nanning, Guangxi, carefully selecting imported quartz sand and ultra-fine steel fibers to ensure continuous aggregate grading (particle size range 0.15-2.36mm) and uniform fiber dispersion, safeguarding material performance stability at the source. Compared with the ordinary river sand and low-activity mineral admixtures used by some manufacturers, a scientific raw material combination can increase UHPC compressive strength by more than 30%, reaching an industry-leading level of 150-200MPa.

Precise control of component proportions determines the performance ceiling of UHPC. A typical UHPC mix ratio requires strict control of the water-binder ratio (usually ≤0.2), the total amount of cementitious materials (1000-1200kg/m³), and the fiber volume content (2-5%). Through orthogonal test optimization, Qinglong's technical team derived a golden ratio: a cement-silica fume-fly ash proportion of 6:3:1, hooked-end steel fibers with an aspect ratio of 50, combined with the self-developed polycarboxylate high-range water reducer, enabling the material to maintain good flowability (flow spread ≥750mm) while achieving a flexural toughness index of ≥30kJ/m². This refined mix design improves crack resistance and durability by 40% compared with traditional mixes, making it particularly suitable for landmark buildings with demanding material performance requirements, such as grand theaters and museums.

Performance optimization direction reflects manufacturers' differentiated technical competitiveness. Relying on its provincial engineering technology center, Qinglong Group has formed three distinctive optimization systems: a surface texture optimization technology developed for decorative components, which achieves diverse effects such as stone imitation and metal finishes through nano-scale surface treatment processes; a lightweight optimization solution for long-span structures, which adopts hollow construction combined with lightweight aggregate technology to reduce component self-weight by 25% while maintaining structural strength; and a durability optimization strategy for harsh environments, where the synergistic effect of added corrosion inhibitors and mineral admixtures gives UHPC products a chloride ion penetration coefficient of ≤1×10⁻¹²m/s, meeting the service requirements of marine engineering and cold regions. These technological innovations have enabled Qinglong UHPC products to successfully achieve the unity of complex functions and aesthetics, such as translucent concrete, in projects including the Century Plaza renovation project on Nanjing East Road.

As a national high-tech enterprise and a participant in the development of UHPC industry standards, Qinglong Group has always upheld the mission of "Creating Aesthetic Architecture". Through 28 years of technical accumulation, it has built full-chain solution capabilities ranging from raw material screening and mix design to performance optimization. Whether it is the cost control and delivery efficiency valued by real estate developers, or the design freedom and surface effects pursued by designers, Qinglong can provide customized UHPC solutions. Choosing a professional UHPC manufacturer means choosing not only the material itself, but also the technical strength and engineering experience behind it—this is precisely the core of how Qinglong Group, as a new-type decorative building materials enterprise, creates long-term value for its customers.