What Are the Environmental Acceptance Criteria for GRC Projects? A Comprehensive Evaluation of Green Building Materials

For GRC projects, especially as part of green buildings, environmental acceptance is no longer limited to the content of harmful substances in the material itself, but extends to resource consumption, energy conservation, and environmental load across the entire life cycle. Qinglong Group has established a comprehensive environmental indicator system covering material production, construction and installation, and long-term performance.

1. Core Indicators of Material Environmental Performance: ◦Radionuclide limits: Must comply with Class A requirements of the national standard "Limits of Radionuclides in Building Materials" (GB 6566), i.e., internal exposure index IRa≤1.0 and external exposure index Ir≤1.3, applicable to all buildings. ◦Harmful substance limits: Products must not contain internationally recognized carcinogens such as asbestos. Various admixtures, pigments, and other additives used must have heavy metal (lead, cadmium, chromium, mercury, etc.) content that complies with relevant environmental standards. ◦Volatile organic compounds (VOC): For coatings and protective agents used on GRC surfaces, their VOC emissions must meet standards such as "Limits of Harmful Substances in Indoor Decorating and Refurbishing Materials".

2. Environmental Indicators for Production and Construction Processes: ◦Waste utilization rate: The recycling and reuse rate of offcuts and waste slurry generated during factory production. Through technological innovation, Qinglong Group crushes recycled materials for use as aggregate, achieving "zero discharge" of production waste. ◦Energy and resource consumption: Comprehensive energy and water consumption per unit of product. Energy-saving measures such as waste heat recovery from steam curing and solar power can reduce this indicator. ◦Construction environmental impact: The dry construction rate, noise control, and dust control during on-site installation. GRC's high prefabrication rate and minimal on-site wet work are themselves environmental advantages.

3. Green Performance Indicators for the Long-Term Use Phase: ◦Energy-saving contribution: When GRC is used as integrated insulation and decorative panels, the system's heat transfer coefficient (K-value) is a key energy-saving acceptance indicator. ◦Durability and maintenance: Long service life and low maintenance are themselves the greatest environmental benefits. GRC's durability reduces the resource consumption and construction waste caused by material replacement. Its self-cleaning surface performance reduces water and chemical usage for cleaning. ◦Recyclability: After building demolition, GRC materials can be crushed and recycled as aggregate, reducing landfill pressure.

Therefore, environmental acceptance of a GRC project is a comprehensive process spanning material testing reports, production records, construction plans, performance testing reports, and final building energy efficiency assessment. Qinglong Group's GRC products and system solutions consistently pass the relevant requirements of various green building evaluation systems (such as LEED and China Three-Star Green Building) at high standards.