What Are the Characteristics of the Material Mix Ratio for Lightweight GRC Moldings? Qinglong's GRC Lightweight Technology Research

Mix proportion characteristics of lightweight GRC modeling materials: cement content of 350-400kg/m³, supplementary materials (fly ash, silica fume) of 100-150kg/m³, lightweight aggregates (ceramsite, glazed hollow beads) of 200-300kg/m³, and water-binder ratio of 0.30-0.35. Density is controlled at 1600-1800kg/m³, compressive strength ≥30MPa, and thermal conductivity ≤0.5W/(m·K). Through optimized mix proportions, lightweighting is achieved while ensuring strength.

Mix proportion optimization results: a large-scale ceiling project using lightweight GRC achieved a density of 1750kg/m³, 25% lighter than conventional GRC, with installation efficiency improved by 40% and structural load reduced by 30%. Qinglong's GRC lightweight formula has been verified through extensive experiments, with stable and reliable performance.

Cementitious Material Optimization

Using sulphoaluminate cement for early strength and rapid hardening. Fly ash is added to improve workability. Silica fume enhances strength and reduces porosity. Optimized proportions deliver synergistic effects.

Lightweight Aggregate Selection

Ceramsite particle size of 5-10mm with reasonable gradation. Glazed hollow beads with density ≤100kg/m³, uniformly dispersed. Fiber reinforcement improves toughness. Optimized admixtures enhance performance.

Mix Proportion Design

Weight-based batching with ±1% accuracy. Trial mix adjustments achieve the optimal state. Construction processes are considered to ensure workability. Batch production maintains stability.

Key Performance Control Points

Density control target of ±50kg/m³. Strength coefficient of variation ≤10%. Drying shrinkage ≤0.6%. Durability meets application requirements.

Lightweighting is an important development direction. Qinglong GRC technology is mature and widely applied.