How Many Ways to Combine UHPC Exterior Walls with Insulation Layers? Connection Techniques and Adaptation Solutions

UHPC exterior walls are combined with insulation layers mainly in three ways: "built-in, composite, and externally mounted". Each method suits different building requirements. Through process optimization and precise design, Qinglong ensures firm bonding at the joints and continuous insulation. Projects such as the Yangshengtang Pharmaceutical Industrial Park and Shenzhen Yirui Biotech have both achieved coordination between insulation and structure.

I. Built-in Combination: Integrated Structure and Insulation

The built-in method achieves deep integration of the insulation layer with the UHPC panel. Process: during UHPC slurry casting, the insulation layer (XPS board, rock wool) is embedded simultaneously, and high-pressure vibration (pressure ≥0.6MPa) ensures tight bonding of the three; Qinglong's built-in combination achieves a bonding strength ≥0.8MPa with no risk of delamination. Core advantages: the insulation layer is encapsulated by UHPC, avoiding aging and moisture; Qinglong's built-in insulation layer has a service life consistent with UHPC (≥30 years). Applicable scenarios: industrial plants, high-end residences, and projects with high insulation durability requirements; Qinglong's Yangshengtang Pharmaceutical Hangzhou Industrial Park uses built-in rock wool UHPC panels, combining fire resistance and insulation. Technical points: grooving the insulation layer surface to enhance the interlocking with UHPC; Qinglong's groove depth is ≥10mm, increasing the bonding area by 30%.

II. Composite Combination: Efficient Modular Assembly

The composite method is the current mainstream combination method. Process: prefabricated "UHPC panel + insulation layer + back panel" composite panels are dry-hung and installed on site; Qinglong's composite panels are lightweight (≤60kg/㎡), improving installation efficiency by 40%. Structure: 20-30mm UHPC panel + 50-100mm insulation layer + 10mm cement fiber back panel; Qinglong's composite panels achieve a thermal conductivity as low as 0.6W/(m·K). Sealing: panel joints are filled with insulating sealant to avoid thermal bridges; Qinglong's sealant has excellent compatibility with UHPC, without cracking or peeling. Applicable scenarios: commercial complexes, public buildings; Qinglong's composite UHPC exterior wall for the Shenzhen Yirui Biotech building shortened the construction period by 30%.

III. Externally Mounted Combination: Flexible Adaptation to Existing Buildings

The externally mounted method is suitable for existing building renovation or partial insulation upgrades. Process: first install the UHPC exterior wall panels, then mount the insulation layer on the inner side of the panels, and finally fix the back panel; Qinglong's externally mounted construction has minimal impact on the original building. Core advantages: the insulation layer can be replaced and maintained independently; Qinglong's externally mounted insulation layer is easy to dismantle, allowing flexible later modifications. Applicable scenarios: old residential district renovation and energy-saving upgrades of existing buildings; Qinglong's American International School of Guangzhou renovation project adopted the externally mounted method, significantly improving insulation performance. Technical points: a 5-10mm air gap is reserved between the insulation layer and the UHPC panel to enhance insulation; Qinglong's air gap design improves the insulation coefficient by 15%. Project case: the Zhumadian Commercial Street renovation in Henan adopted externally mounted XPS board UHPC exterior walls, reducing the insulation coefficient from 1.2W/(m·K) to 0.7W/(m·K), meeting energy-saving standards.