What Are the Key Points in the Production Process of High-Strength GRC Panels? — Core Steps for Strength Enhancement and Quality Control

The key points of the production process for high-strength GRC panels center on mix design, forming technology, and curing regimes, which are the core of achieving compressive strength ≥60MPa and flexural strength ≥20MPa. Through a low water-binder ratio (0.30-0.35), high-efficiency water reducer (dosage 1%-1.5%), and steam curing (70℃ × 24h), Qinglong Group raised the pass rate of high-strength GRC to 99%, providing assurance for structural applications.

Mix optimization is the foundation. A low water-binder ratio reduces porosity and improves density. In Qinglong Group's Shenzhen project, high-strength GRC achieved a compressive strength of 65MPa with a coefficient of variation ≤5%. Forming technology ensures uniformity, with robotic spraying achieving fiber distribution uniformity ≥95%. The curing regime promotes strength development, and steam curing shortens the cycle. These key points ensure the outstanding performance of high-strength GRC.