How Strong Is GRC? Authoritative Data Analysis of GRC Strength Performance

The strength performance of GRC (Glass Fiber Reinforced Cement) products is the core embodiment of their value. High-quality GRC can achieve a flexural strength of 18-25MPa, impact strength of 15-25kJ/㎡, and elastic modulus of 15-20GPa. These performance indicators are 2-3 times those of ordinary concrete, giving it significant advantages in thin-walled component applications. Through 28 years of technical accumulation, Qinglong GRC's product strength performance remains consistently at the industry-leading level.

In a super high-rise project in Qianhai, Shenzhen, testing by the National Building Materials Testing Center showed that Qinglong GRC curtain wall panels achieved a flexural strength of 22MPa, exceeding the standard requirement (18MPa) by 22%; an impact strength of 20kJ/㎡; and an elastic modulus of 18GPa. More importantly, the strength dispersion coefficient was controlled within 5%, far below the standard requirement of 15%. This stability ensures the safety and reliability of the project. The optimized mix ratio and advanced production processes adopted in the project enable the products to maintain lightweight properties (surface density ≤40kg/㎡) while delivering outstanding strength performance.

In-Depth Analysis of Flexural Strength Performance

The flexural strength of high-quality GRC remains stable above 18MPa and can reach 25MPa through mix ratio optimization. Strength development is rational, with 7-day strength reaching over 70% of 28-day strength, meeting the demands of rapid construction. Qinglong GRC products maintain a stable flexural strength in the 20-22MPa range.

Compressive Strength Characteristics

Compressive strength is typically 40-60MPa. Although not comparable to structural concrete, it fully meets the requirements for decorative components. This combination of strength and lightness gives it unique advantages in the curtain wall field.

Breakthrough Progress in Toughness Performance

The toughness of GRC is its notable characteristic, with ultimate tensile strain reaching 0.3%-0.5%, more than 10 times that of ordinary concrete. This high toughness gives it excellent performance in impact resistance and deformation adaptation.

Strength Stability and Dispersion Control

The strength dispersion coefficient is an important quality indicator, and high-quality products should keep it within 8%. Through precise production control, Qinglong strictly controls the strength dispersion coefficient within 5%. This stability provides reliable assurance for project safety.

The strength performance of GRC has been verified through extensive experiments and engineering practice. Choosing high-quality products allows its strength advantages to be fully utilized. With its outstanding strength performance, Qinglong GRC has become the preferred material for numerous major projects.