How Does the Weight of UHPC Panels Differ by Thickness?

The weight difference of UHPC panels of different thicknesses is linearly and positively correlated with thickness. UHPC has a density of approximately 2400kg/m³, and the weight calculation formula is "Weight (kg) = Thickness (m) × Area (m²) × 2400". Panels of conventional thicknesses (10-50mm) weigh 24-120kg per square meter, 30-50% lighter than ordinary concrete panels of the same strength. Both Qinglong ultra-thin panels (≤20mm) and thick panels (＞50mm) achieve a balance between lightweight design and high strength, adapting to different installation scenarios.

I. Weight Comparison Table for UHPC Panels of Conventional Thicknesses

Thickness determines the core weight differences. Ultra-thin panels (≤20mm): 10mm thick weighs 24kg per square meter, 15mm thick 36kg, 20mm thick 48kg; Qinglong's 4mm ultra-thin UHPC panel weighs only 9.6kg per square meter, suitable for interior decoration and ceilings, such as the Meixi Lake Boston MIZU Salon project. Conventional panels (20-50mm): 25mm thick 60kg/m², 30mm thick 72kg/m², 50mm thick 120kg/m², suitable for exterior wall cladding and landscape components; Qinglong's 25mm thick UHPC curtain wall panels for the Shenzhen Yirui Biotechnology Building are lightweight and easy to install. Thick panels (＞50mm): 60mm thick 144kg/m², 100mm thick 240kg/m², suitable for floor slabs and load-bearing components; Qinglong's 100mm thick UHPC load-bearing panels for the Shanghai Astronomy Museum are 40% lighter than ordinary concrete panels of the same strength.

II. Core Impact of Weight Differences and Application Adaptation

Weight differences determine installation and scenario adaptation. Lightweight advantage: ultra-thin and conventional panels are lightweight, reducing building loads and lowering installation costs (no large lifting equipment required); Qinglong's 20mm thick UHPC panels can be carried and installed manually. Thick panel balance: although thick panels weigh more, their strength far exceeds that of ordinary concrete (compressive strength ≥120MPa), and reduced thickness achieves lightweight design—for example, a 100mm thick UHPC panel has a load-bearing capacity equivalent to a 200mm ordinary concrete panel, yet weighs only 60% as much. Comparison with ordinary concrete: at the same thickness, UHPC panels are slightly heavier than ordinary concrete (density 2300kg/m³), but with 3-5 times the strength; for the same load-bearing capacity, UHPC panels need only 1/3-1/2 the thickness of ordinary concrete, resulting in a lighter overall weight. Qinglong used 50mm UHPC panels to replace 120mm ordinary concrete panels at the Yangshengtang Pharmaceutical Hangzhou Industrial Park, reducing the building load by 58%.

III. Qinglong's Weight Optimization and Project Practice

Technical optimization achieves a balance between weight and performance. Material improvement: adding lightweight aggregates (such as ceramsite, at 10-15% content) reduces weight by 10-15% without compromising strength; Qinglong's lightweight UHPC panels have a density of 2100-2200kg/m³. Structural optimization: hollow-out and perforated designs, such as the UHPC hollow-out panels for the Ouargla Hotel in Algeria (50% hollow-out rate), where 50mm thick panels weigh only 60kg/m² in actual weight. Project case: the extra-large 3245×3530mm UHPC panels (30mm thick) at Shanghai New World Plaza weigh 700kg per panel; through lightweight design and professional lifting, installation was completed smoothly, meeting both the design requirements and building load control.