The HN composite outer formwork is used as the disassembly-free outer formwork, and the conventional formwork is used as the inner formwork. Concrete is poured in the middle, and the HN composite outer formwork and the concrete are firmly connected through connectors. The outside is made of insulation slurry, fireproof leveling layer, and anti-cracking mortar. The cavity-free composite insulation system formed by the surface layer and facing layer is referred to as the HN composite external formwork insulation system. The HN composite external formwork insulation system is divided into HN-A type external formwork insulation system and HN-B type external formwork insulation system according to the different types of HN composite external formwork.
T/SDCT 013-2021 history
2021T/SDCT 013-2021 Technical specification for application of HN composite external formwork cast-in-place concrete insulation system