Weight Differences of UHPC Panels of Different Thicknesses: Quantitative Comparison and Impact on Engineering Applications

The weight of UHPC panels is linearly and positively correlated with thickness. Clarifying the weight differences across different thicknesses is essential for project load calculations, construction plan selection, and structural design optimization. Based on the material properties of UHPC (density of approximately 2500kg/m³) and 28 years of engineering practice, Qinglong Group has quantified the weight differences of UHPC panels of different thicknesses to provide designers and owners with an accurate reference. Its lightweight advantage (more than 60% lighter than natural stone) has been fully demonstrated in projects such as Shenzhen Yirui Biotech and Hainan Poly Peninsula No. 1.

I. Quantitative Comparison of Weight Differences (Based on Standard Density of 2500kg/m³)

Ultra-thin panels (≤20mm): 20mm thick UHPC panels have a surface density of approximately 50kg/㎡, 15mm approximately 37.5kg/㎡, and 10mm approximately 25kg/㎡. They are suitable for interior decoration and lightweight suspended ceilings. Qinglong's 15mm ultra-thin panels were used for the interior decoration of Huawei's Bantian headquarters in Shenzhen; each 3㎡ panel weighs only 112.5kg, making manual handling and installation easy. Standard panels (25-50mm): 25mm thick is approximately 62.5kg/㎡, 30mm approximately 75kg/㎡, 40mm approximately 100kg/㎡, and 50mm approximately 125kg/㎡. These are the mainstream specifications for building curtain walls and landscape components. Qinglong's 30mm standard panels were used for the exterior wall of Yangshengtang Pharmaceutical's Hangzhou Industrial Park, weighing only 41.7% of natural stone of the same thickness (approximately 180kg/㎡). Thick panels (≥60mm): 60mm thick is approximately 150kg/㎡, 80mm approximately 200kg/㎡, and 100mm approximately 250kg/㎡. These are suitable for load-bearing components and roof panels. Qinglong's 80mm thick UHPC panels were used for the roof of an industrial plant, weighing 37.5% less than concrete panels (approximately 320kg/㎡), reducing structural loads.

II. Core Impact of Weight Differences on Engineering Applications

Structural design: Weight directly affects the load on the main structure. Ultra-thin and standard panels can reduce the amount of structural reinforcement, while thick panels require advance verification of structural load-bearing capacity. Qinglong selected 30mm thick UHPC curtain wall panels for a high-rise project, reducing structural reinforcement costs by 30% compared to stone curtain walls. Construction plans: Panels weighing ≤75kg/㎡ can be installed with small lifting devices (such as vacuum lifters), while panels weighing >100kg/㎡ require truck cranes. Qinglong's 25mm panels (62.5kg/㎡) were installed manually with small lifting devices in the Yangjiang project, improving construction efficiency by 20%. Transportation costs: The lighter the weight, the lower the transportation energy consumption and cost. The transportation cost of 30mm thick UHPC panels is 25%-30% lower than that of 50mm panels. Through lightweight selection, Qinglong reduces transportation expenses for off-site projects.

III. Qinglong's Weight Optimization Solutions and Engineering Evidence

Mix optimization for lightweighting: While ensuring strength, lightweight aggregates replace part of the quartz sand, reducing UHPC density to 2300-2400kg/m³. The weight of 30mm panels can be reduced to 70-72kg/㎡ while strength remains ≥150MPa. Structural optimization for weight reduction: Reinforcing ribs are set on the back of panels to reduce overall panel thickness. For example, replacing a 40mm flat panel with a 30mm ribbed panel reduces weight by 25% while maintaining the same load-bearing capacity. Qinglong adopted this solution for the double-curved panels of the Guangxi New Media Center, achieving a balance between weight reduction and strength. Project evidence: The 3000㎡ of 30mm thick UHPC panels at the Shenzhen Yirui Biotech building weigh 75kg/㎡ per panel, requiring no additional reinforcement of the main structure; the 12000㎡ of 25mm panels at Hainan Poly Peninsula No. 1 reduced transportation and installation costs by 28% compared to thicker panels.

IV. Practical Recommendations for Weight Selection

Interior decoration and lightweight components: Prefer 15-25mm thickness (37.5-62.5kg/㎡), balancing lightweighting with practicality. Exterior curtain walls and landscape components: 25-35mm thickness (62.5-87.5kg/㎡) is the mainstream choice, balancing strength, weight, and cost. Load-bearing structures and roof panels: Choose 40-80mm thickness (100-200kg/㎡) with precise selection based on load requirements. Qinglong can provide customers with personalized weight optimization solutions, achieving a unity of lightweighting and cost-effectiveness while meeting project requirements.

UHPC panels of different thicknesses vary significantly in weight, and proper selection is key to project success. With its material and structural optimization technologies, Qinglong Group achieves lightweighting while ensuring performance, reducing project costs, improving efficiency, and fully leveraging the comprehensive advantages of UHPC materials.