How UHPC Exterior Walls Achieve Integrated Insulation: Qinglong's Composite Structure and Energy-Saving Solutions

UHPC exterior walls achieve integrated thermal insulation through a composite structural design of “UHPC panel + insulation layer + base wall,” balancing decoration, insulation, and structural performance, and solving the pain point of traditional exterior walls where “decoration and insulation are disconnected.” Qinglong Group has cultivated integrated insulation technology for 28 years, developing three major solutions—“post-installed insulation, composite insulation, and sandwich insulation”—and achieving energy-saving rates of ≥65% in projects such as the Hainan International Convention and Exhibition Center and the Yangshengtang Pharmaceutical Hangzhou Industrial Park, meeting national energy-efficient building standards.

1. Post-Installed Insulation Solution: Suitable for Existing Buildings and Simple Designs

Structure: UHPC decorative panels (20-30mm) + insulation layer (XPS board, rock wool, thickness 50-100mm) + base wall. The insulation layer is bonded or anchored to the base wall, then the UHPC panels are installed. Qinglong's post-installed insulation solution offers flexible construction and is suitable for existing building renovation. Core advantages: simple construction, the insulation layer or UHPC panels can be replaced individually with low maintenance costs; flexible insulation layer selection, with thickness adjustable according to energy-saving requirements (100mm in severe cold regions, 50mm in mild regions). Qinglong technical points: bonding strength between the insulation layer and base wall ≥0.3MPa, spacing between UHPC panels and insulation layer ≥50mm (for ventilation and heat dissipation). Qinglong's American International School of Guangzhou renovation project adopted the post-installed insulation solution (XPS board thickness 80mm), achieving an energy-saving rate of 65%. Applicable scenarios: existing building renovation, simple flat exterior walls, budget-limited projects. The landscape buildings of Qinglong's Yiyang County Xin River Ecological Restoration project adopted this solution, combining energy efficiency with decorative effect.

2. Composite Insulation Solution: Integrated Forming of Decoration and Insulation

Structure: factory-prefabricated composite panels of “UHPC panel (25-30mm) + insulation layer (XPS board, polyurethane, thickness 60-120mm) + back panel (UHPC or cement board, 10-15mm),” installed directly on site. Qinglong's composite panels weigh ≤120kg/㎡, making installation easy. Core advantages: integrated factory production, with the insulation layer firmly bonded to the panel and no risk of hollowing or detachment; the insulation layer is enclosed by the panel and back panel, offering superior waterproofing and fire resistance (fire rating reaches Class A). Qinglong technical points: a special adhesive (compressive strength ≥3MPa) is used to connect the UHPC panel and insulation layer, with composite panel dimensional accuracy ≤±2mm. Qinglong's Yangshengtang Pharmaceutical Hangzhou Industrial Park project used composite insulation panels (UHPC + XPS board, thickness 80mm), achieving an energy-saving rate of 70%. Applicable scenarios: new buildings, complex exterior wall designs, high-end projects. Qinglong's Guangxi New Media Center double-curved exterior walls adopted the composite insulation solution, combining aesthetics with energy efficiency.

3. Sandwich Insulation Solution: Combining High Performance and Durability

Structure: UHPC inner layer (15-20mm) + sandwich insulation layer (vacuum insulation panels, aerogel, thickness 40-80mm) + UHPC outer layer (15-20mm). The three layers are composited through fiber reinforcement or connectors. Qinglong's sandwich insulation solution delivers the best thermal insulation performance (thermal conductivity ≤0.028W/(m·K)). Core advantages: outstanding insulation performance, suitable for severe cold regions (energy-saving rate ≥75%); the inner and outer UHPC layers protect the insulation layer, with a service life matching that of UHPC (≥50 years) and no aging risks. Qinglong technical points: the sandwich layer uses high-performance insulation materials (vacuum insulation panels), connectors are made of stainless steel (corrosion-resistant), and pressure is controlled during the compositing process (0.2-0.3MPa) to ensure the three layers are tightly bonded. Qinglong's project in a severe cold region of Xinjiang adopted the sandwich insulation solution (thickness 100mm), achieving an energy-saving rate of 78%. Applicable scenarios: severe cold regions, projects with high energy-saving requirements, high-end residences and public buildings. Qinglong's convention and exhibition center project in Harbin adopted this solution to withstand low temperatures, with remarkable energy-saving results.

4. Qinglong's Core Advantages in Integrated Insulation and Project Evidence

Technological innovation: holds 8 patents related to integrated insulation and participated in formulating the insulation-related standards for “Ultra-High Performance Concrete (UHPC) Exterior Wall Panels,” with technology leading the industry. Customized design: optimizes insulation layer thickness and type according to different climate zones (severe cold, cold, mild) and energy-saving requirements. Qinglong designed 50mm XPS boards for projects in Hainan (mild region) and 100mm vacuum insulation panels for projects in Xinjiang (severe cold region). Project evidence: Hainan International Convention and Exhibition Center (composite insulation, energy-saving rate 68%), Yangshengtang Pharmaceutical Hangzhou Industrial Park (composite insulation, energy-saving rate 70%), and a convention and exhibition center in Xinjiang (sandwich insulation, energy-saving rate 78%)—all passed energy-saving acceptance inspections and gained owners' recognition.

UHPC exterior wall integrated insulation achieves a perfect fusion of decoration and insulation through composite structural design. Qinglong Group's three major solutions adapt to different scenarios and needs, balancing energy efficiency, safety, and durability. Choosing a manufacturer with proven integrated insulation technology capabilities is key to achieving green energy efficiency and high-quality decoration in buildings.