How Can UHPC Exterior Walls Achieve Integrated Thermal Insulation?

UHPC exterior walls achieve integrated thermal insulation through innovative structural design that composites the decorative surface layer (UHPC panel), insulation layer (such as rock wool or polyurethane), and base wall (or backing board) into complete unit panels through factory prefabrication, thereby achieving integration, prefabrication, and high performance of building insulation and decoration systems. The "Qinglong Shield" UHPC insulation and decoration integrated panel system launched by Qinglong Group successfully combines decorative, thermal insulation, and envelope functions in one product. Applied in projects such as the Comprehensive Service Center of Pingshan High-tech Zone in Shenzhen, it achieves dry construction, fast installation, and significant energy-saving effects, with a heat transfer coefficient (K value) as low as below 0.40 W/(m²·K).

Structural system design is the technical core. Qinglong's UHPC insulation integrated panel adopts a typical multi-layer composite structure of "surface layer - bonding layer - insulation layer - bonding layer - backing board". The surface layer is 12-15mm thick ultra-high performance concrete (UHPC), providing decoration and protection functions; the middle layer is high-strength, highly fire-resistant insulation material (such as Class A rock wool strips); the bottom layer is high-density cement pressure board or glass-magnesium board serving as the backing board to enhance overall rigidity. The layers are continuously bonded with a dedicated modified epoxy resin structural adhesive, and reliable mechanical connections are formed through a special mechanical anchoring process (such as nylon sleeve anchors penetrating the insulation layer), ensuring overall integrity.

The selection of insulation materials and fire safety are crucial. The integrated system must comply with building fire codes. Qinglong prioritizes Class A non-combustible rock wool, mineral wool, or thermosetting Class A polyurethane as insulation core materials. Combined with the non-combustible UHPC surface layer and backing board, the entire composite panel system achieves Class A fire protection standards, eliminating the fire spread risk of traditional external wall insulation systems.

The installation connection system ensures reliable connection with the building's main structure. The integrated panels are dry-hung to the building's main structure (concrete walls or steel structures) through a dedicated aluminum alloy bracket system. The bracket system features three-dimensional adjustment for easy installation and leveling. Panel joints are sealed with weather-resistant sealant, and breathable drainage structures can be installed behind the joints to ensure the system's watertightness and airtightness. This installation method completely avoids quality problems such as hollowing and detachment that may occur with on-site wet-adhered insulation layers.

UHPC insulation integrated panels combine high energy efficiency, premium decoration, safety and durability, and rapid construction in one product, representing the development direction of building envelope systems. Qinglong can provide customized products with insulation layers of different thicknesses according to the energy-saving design requirements of different regions, meeting various standards from 50% to 75% energy savings and even nearly zero-energy buildings.