What Is the Bulk Density Range of Lightweight GRC Panels? An Analysis of Qinglong's GRC Lightweight Technology

The bulk density of lightweight GRC panels is typically controlled within 1.5-1.8 g/cm³ (1500-1800 kg/m³), which is 25%-30% lighter than conventional GRC panels (2.1-2.3 g/cm³). This lightweighting is mainly achieved by incorporating lightweight aggregates (such as ceramsite, pumice, etc.) and optimizing the mix proportion. While maintaining good mechanical properties (flexural strength ≥10 MPa), lightweight GRC significantly reduces structural loads, making it particularly suitable for weight-sensitive applications such as curtain walls and suspended ceilings.

Through its unique lightweight technology, Qinglong GRC products maintain a stable bulk density of 1.6-1.7 g/cm³, compressive strength ≥25 MPa, and thermal conductivity ≤0.5 W/(m·K). In a renovation project of an old building, replacing stone with lightweight GRC curtain walls reduced structural loads by 40% and saved approximately 30% in reinforcement costs. Testing has shown that the hanging load capacity of lightweight GRC panels is ≥1.0 kN, fully meeting curtain wall safety requirements.

Lightweight Technology Approaches

Lightweight aggregates such as ceramsite and expanded perlite are used, with particle sizes of 0.5-2 mm; optimized grading achieves the densest packing; these technologies achieve lightweight yet high strength.

Physical Performance Control

Dry density ≤1800 kg/m³; compressive strength ≥25 MPa; these properties balance weight and strength.

Application Advantage Analysis

Structural loads reduced by 30%-40%; construction efficiency improved by 25%; these advantages expand the scope of applications.

Special Treatment Processes

Surface reinforcement treatment improves wear resistance; these processes ensure service life.

Lightweighting is an important development direction for GRC. Qinglong GRC features mature technology and excellent performance.