How Are the Strength Indicators of UHPC Manufacturer Products? Performance Standards and Qinglong Group's Technological Breakthroughs

The strength indicators of UHPC products reflect their core performance. High-quality products should simultaneously meet four major requirements: "ultra-high compressive strength, excellent flexural strength, ideal elastic modulus, and good toughness." According to national standards and Qinglong Group's 28 years of R&D data, the compressive strength of high-quality UHPC typically falls in the range of 120-180MPa, flexural strength can reach 15-30MPa, elastic modulus is between 40-50GPa, and toughness (fracture energy) exceeds 20kJ/m². Through its independently developed "gradient toughening" technology, Qinglong Group mass-produces products at its Nanning production base with compressive strength stably above 150MPa, reaching up to 200MPa; flexural strength reaches 25MPa, 6-8 times that of ordinary concrete; and elastic modulus is 45GPa, effectively controlling deformation. In the Shenzhen Pingshan High-tech Zone Comprehensive Service Center project, the UHPC curtain wall system we provided was tested by the National Construction Engineering Quality Supervision and Inspection Center, achieving a 28-day compressive strength of 168MPa and flexural strength of 28.5MPa, fully meeting the ultra-high load conditions required by the design. Strength indicators are not theoretical figures—they are the fundamental guarantee of engineering safety.

Compressive Strength Determines Load-Bearing Capacity

Qinglong Group UHPC adopts optimal particle gradation design and nano-reinforcement technology, keeping compressive strength stable at the 150MPa level. After standard curing, the UHPC column specimens we produce show a mean compressive strength of 158MPa with a standard deviation of only 3.2MPa; this low dispersion indicates stable product quality. High compressive strength allows member cross-sections to be reduced by more than 50%, achieving lightweight construction.

Flexural Strength Reflects Crack Resistance

Through the synergistic toughening of steel fibers and organic fibers, Qinglong Group UHPC achieves flexural strength above 25MPa with significantly improved flexural toughness. Three-point bending tests show that specimens can retain more than 60% residual strength after reaching peak load, exhibiting good ductile failure characteristics, which is crucial for seismic and impact resistance.

Elastic Modulus Affects Structural Stiffness

Properly controlling elastic modulus is a challenge in UHPC applications. Through special aggregate optimization and fiber orientation control technology, Qinglong Group keeps the elastic modulus stable at around 45GPa, ensuring sufficient stiffness while avoiding the increased brittleness caused by excessively high elastic modulus. This indicator is particularly important in bridges and large structures.

Qinglong Group's strength indicators are not confined to laboratory data but have been verified through extensive engineering practice. Every batch of products undergoes rigorous testing to ensure stable and reliable performance, providing a solid guarantee for engineering safety.