Cl building system: compatible with insulation and fire protection - Huaqiang Electronic Network

Abstract: In recent months, several fire incidents in our city have been linked to external wall insulation systems. The truth is that the insulation materials commonly used in Chinese buildings often suffer from poor fire safety performance and significant fire risks. However, the CL Construction System offers an innovative solution by integrating load-bearing, insulation, and fire protection into one. This system meets A-level fire protection standards through specially designed fireproof structures, aligning with modern trends in building design and safety. It has been noted that insulation materials play a crucial role in enhancing the fire resistance of external wall systems. These materials are generally divided into two types: inorganic and organic. Inorganic insulation materials are non-flammable but offer limited thermal performance and come at a higher cost, making up only about 20% of the market. On the other hand, organic insulation materials provide excellent thermal efficiency but are flammable and more affordable, accounting for over 80% of the market. To address the challenges associated with external wall insulation, it is essential to focus on developing materials that are both fire-resistant and cost-effective. The CL construction system achieves this by incorporating advanced fireproof techniques. It is based on a shear wall structure, forming a unified or integral cast-in-place space structure composed of a CL composite shear wall, ordinary shear walls, cast-in-place slabs, and edge members. The insulation board is sandwiched between two layers of reinforced concrete, with the inner layer being at least 100 mm thick and the outer layer 50 mm thick. This cavity-free design isolates the insulation from air, preventing combustion. In September 2010, the National Fixed Firefighting System and Heat-Resistant Component Quality Supervision and Testing Center conducted tests according to GB/T 9978.8-2008 "Building Component Fire Test Method," Part 8: Special Requirements for Non-Load-Bearing Vertical Components. The test results showed that the fire resistance limit of the CL composite wall exceeded 4 hours, confirming that the CL construction system meets A-level fire protection requirements. This demonstrates that the CL building system successfully combines structural support, insulation, and fire protection, offering a safe and efficient solution for modern construction. --- This version improves clarity, adds context, and enhances readability while maintaining the original technical information.

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