How to Judge GRC Product Quality? Performance Indicators and Practical Identification Methods

Evaluating GRC product quality requires establishing a systematic assessment framework across three dimensions: mechanical performance, durability, and appearance quality. Based on 28 years of production experience, Qinglong Group has summarized a practical identification method of "look, touch, and test," which, combined with laboratory testing and on-site observation, enables quick and accurate assessment of product quality. Key indicators such as flexural strength, toughness, and durability must be tested with professional equipment, while surface quality and dimensional accuracy can be judged through experience.

Mechanical performance is the core of product quality. The flexural strength of high-quality GRC products should be no less than 15MPa, with fracture energy reaching 12000J/㎡ or above. Through optimized mix proportions and fiber distribution, Qinglong Group products achieve flexural strength of 18-25MPa. Simple on-site identification can be done by tapping sound: products with uniform quality produce a crisp sound without hollow, dull tones. For major projects, manufacturers should be required to provide third-party test reports to verify that key performance indicators meet design requirements.

Durability affects product service life. Alkali resistance is key to GRC durability, with fiber stability in alkaline environments evaluated through accelerated aging tests. After 300 freeze-thaw cycles, Qinglong Group products show strength loss of no more than 5%, far exceeding standard requirements. In appearance, high-quality products have dense, uniform surfaces without noticeable color variation or air bubbles. Thickness deviation should be controlled within ±1mm, with flatness meeting the 3mm/2m standard.

Practical identification methods include observing edge integrity, checking surface uniformity, and testing water absorption. Products with stable quality maintain high consistency across batches, reflecting the manufacturer's process control capability. Qinglong Group recommends that owners conduct on-site inspections of the production process and completed projects before signing contracts, using multi-angle verification to ensure product quality meets expectations. This comprehensive evaluation approach can effectively avoid quality risks.