What Is the Connection Solution Between UHPC Exterior Walls and Door/Window Openings? UHPC Joint Connection Technical Guide

The connection between UHPC exterior walls and door/window openings requires a comprehensive solution of "waterproofing, sealing, and deformation adaptation." Reinforced frames with a width of ≥100mm shall be set around the openings. The connection adopts a multi-layer sealing design: inner sealant for waterproofing, middle cavity for drainage, and outer airtight strip for sealing. These measures ensure that watertightness and airtightness meet standards.

Specific practices: The opening dimensions are 15-20mm larger than the door/window frame on each side, filled with foam sealant and sealing adhesive. A drip line is set at the top to prevent rainwater backflow. In one project, improper connection treatment caused leakage, with repair costs as high as 5% of the construction cost. In contrast, projects treated according to standards showed no leakage under heavy rainstorms and performed well.

Key Points of Waterproofing Design

Multi-layer sealing design; drip line installation; these key points prevent leakage.

Airtightness Assurance Measures

Airtight strip sealing; these measures improve energy efficiency.

Deformation Adaptation Design

Reserved deformation space; these designs accommodate deformation.

Construction Control Requirements

Strict construction according to drawings; these requirements ensure quality.

Joint treatment is critical. Qinglong UHPC provides complete solutions to ensure functional performance.