What Are the Strength Indicators of UHPC Manufacturer Products? In-Depth Interpretation of Key Performance Parameters and Qinglong Technical Standards

The strength indicators of UHPC products are the core parameters for measuring their structural performance. Premium products achieve a compressive strength of 120-180MPa and a flexural strength of 15-25MPa, far exceeding ordinary concrete by 3-5 times. Based on 28 years of material R&D and engineering practice, Qinglong Group optimizes mix ratios and process control to keep the product strength dispersion coefficient within 5%, ensuring stable and reliable performance for every batch. In projects such as the Wuhan Hanxiu Theater and the Hainan International Convention and Exhibition Center, our UHPC products were tested by third parties, achieving an average compressive strength of 150MPa and a flexural strength of 20MPa, fully meeting the structural requirements of large public buildings.

Compressive strength is a fundamental indicator. Qinglong UHPC adopts a low water-binder ratio (0.18-0.22), highly active admixtures (silica fume content of 20-30%), and high-efficiency water reducers, with steam curing promoting densification to achieve a compressive strength of 120-180MPa. Flexural strength reflects material toughness. Through robotic directional spraying technology, we arrange fibers (volume content of 2-3%) in an orderly distribution along the principal stress direction, achieving a flexural strength of 15-25MPa. With an elastic modulus of 40-50GPa, higher than ordinary concrete, it offers superior deformation capacity.

Strength performance must be verified through standard testing. Qinglong Group's laboratory conducts testing in accordance with the "Test Methods for Ultra-High Performance Concrete (UHPC) Performance", using specimens of 100mm×100mm×100mm and a loading rate of 1.2MPa/s. We regularly submit samples to the provincial quality inspection institute to obtain authoritative reports. In practical applications, strength indicators must be balanced with durability and workability. Through mix ratio optimization, we ensure strength while controlling slump within 200-250mm to meet construction requirements.

Long-term strength stability is key. In accelerated aging tests, Qinglong UHPC retains ≥90% of its strength after 300 freeze-thaw cycles, with an annual carbonation depth increase of ≤0.1mm. In Hainan's high-temperature, high-humidity environment, products in use for 5 years show a strength decay rate of ≤3%, confirming excellent long-term performance. When selecting UHPC products, attention should be paid to the strength test reports and long-term performance data provided by the manufacturer to ensure the material remains stable throughout its full life cycle.