What Are the Strength Indicators of UHPC Manufacturer Products? Mechanical Properties and Qinglong Group's High-Standard Practice

The strength indicators of UHPC products are the quantitative embodiment of their core performance, mainly including "compressive strength, flexural strength, toughness, and elastic modulus"; premium product indicators can reach 3-10 times those of ordinary concrete. Based on extensive experiments and engineering data, Qinglong Group has set its internal control standards at: compressive strength ≥150MPa, flexural strength ≥15MPa, elastic modulus ≥45GPa, and fracture energy ≥20,000 J/m². In the Hainan International Convention and Exhibition Center project, the measured compressive strength of the roof UHPC panels averaged 165MPa, successfully withstanding a Force-12 typhoon; in the large cantilever structure of the Shenzhen Yirui Biotechnology Building, flexural strength remained stable above 18MPa, ensuring safety. Strength is the cornerstone of safety.

Compressive Strength: A Direct Reflection of Load-Bearing Capacity

Achieved through a low water-binder ratio (0.18-0.22) and optimal particle grading. Qinglong adopts a sulphoaluminate cement + silica fume system, with the highest laboratory compressive strength exceeding 200MPa. The strength coefficient of variation of ex-factory products is ≤5%, ensuring stable performance in every batch. High compressive strength allows components to be thinned by 30%, achieving lightweight design.

Flexural Strength and Toughness: Key to Crack Resistance and Deformation Capacity

Relies on fiber reinforcement (volume dosage 3-5%). We use alkali-resistant glass fiber (ZrO₂≥16%); robotic spraying ensures uniform three-dimensional random distribution, giving products a pseudo-ductile failure mode with multiple cracking. The ball drop impact test (1kg steel ball from 1m height) shows no penetrating cracks, with safety far exceeding ordinary materials.

Elastic Modulus and Peak Strain: Reflecting Material Stiffness and Ductility

High elastic modulus (above 45GPa) provides high stiffness and reduces deformation; high peak strain (>0.3%) endows good ductility. Qinglong balances stiffness and toughness through fiber optimization and matrix enhancement to meet different structural requirements.

Long-Term Strength and Fatigue Performance: Important Indicators of Durability

After accelerated aging (300 freeze-thaw cycles), the strength retention rate is >90%; after 2 million cycles of fatigue loading, performance shows no significant degradation. These data support a 50-year design life, ensuring long-term safety.

Therefore, strength indicators require systematic consideration. Qinglong Group, with internal control standards higher than national standards, provides customers with highly reliable products.