What Gap Width Should Be Reserved When Splicing UHPC Panels? Qinglong UHPC Joint Design Specifications

The width of UHPC panel joint gaps must be determined based on panel size, temperature difference, and construction tolerances, generally reserving 8-15mm. The thermal joint width is calculated as ΔL=α·L·ΔT, where α=1.0×10⁻⁵/℃ and ΔT is the local annual temperature difference. The construction joint width must also account for an installation tolerance of ±2mm.

In specific designs, Qinglong UHPC calculates based on panel size and temperature difference: for a 3m panel length in a region with an annual temperature difference of 40℃, thermal deformation is 1.2mm, with a reserved joint width of 10mm (including construction tolerance). Joints are sealed with silicone sealant (movement capability ±25%). In a large curtain wall project, joints designed according to these principles withstood temperature changes from -20℃ to 40℃, with joint sealing remaining intact and no leakage.

Thermal Joint Calculation Principles

Calculated as ΔL=α·L·ΔT; these principles enable scientific design.

Construction Tolerance Considerations

Installation tolerance of ±2mm; these considerations ensure sealing.

Sealant Material Selection

Silicone sealant with movement capability ±25%; these choices accommodate deformation.

Practical Application Verification

Tested from -20℃ to 40℃; these verifications confirm the design is sound.

Joint design requires scientific calculation. Qinglong UHPC's standardized design ensures durable sealing.