UHPC Exterior Wall Panel Installation: What Core Requirements Must the Base Wall Meet?

Whether the excellent performance of UHPC exterior wall panels can be fully realized, the compatibility of the base wall is the key prerequisite. As an industry leader integrating detailed design, manufacturing, and construction installation, Qinglong Group's 28 years of project practice show that indicators such as the strength, flatness, and stability of the base wall directly affect the installation quality and service life of UHPC exterior wall panels.

#Base Wall Strength: Load-Bearing Capacity Must Meet Standards Although UHPC exterior wall panels are relatively lightweight (about 1/4 the weight of traditional stone), the base wall still needs sufficient load-bearing capacity. Qinglong Group requires that the compressive strength of the base wall in cooperative projects be no less than MU10, and the concrete base strength grade be no less than C30, to ensure it can stably support the weight of UHPC panels and installation accessories. For masonry structure bases, concrete constructional columns or ring beams must be set at installation nodes to enhance local load-bearing capacity; for steel structure bases, the wall thickness and connection strength of steel members must meet design requirements. For example, at the Shanghai Astronomy Museum project, the steel structure base was calculated and reinforced by Qinglong's technical team before UHPC sculptural components were installed, ensuring long-term safety in use.

#Flatness and Verticality: Precise Control of Installation Errors The flatness and verticality of the base wall directly affect the jointing effect and installation precision of UHPC exterior wall panels. Qinglong Group implements strict base wall acceptance standards: wall flatness deviation must be controlled within ±3mm/2m, and verticality deviation must not exceed ±5mm/3m. For non-compliant base walls, leveling treatment is required, using cement mortar or special leveling materials for repair, ensuring the base surface is flat and smooth. In the Yangshengtang Pharmaceutical Hangzhou Industrial Park project, Qinglong's construction team used laser rangefinders to monitor base flatness throughout the process and precisely leveled deviation areas, ultimately achieving uniform UHPC panel joint gaps with errors not exceeding 2mm.

#Base Wall Stability: Eliminating Later Deformation Risks The stability of the base wall is the core guarantee for preventing cracking and detachment of UHPC exterior wall panels. Qinglong Group requires that the base wall complete settlement stabilization—new buildings must stand for at least 30 days after main structure completion to ensure settlement deformation is basically finished. For existing building renovation projects, the base wall must undergo comprehensive inspection, with defects such as cracks and hollowing repaired, and reinforcement treatment applied if necessary. In exterior wall renovation of old buildings, Qinglong's team first reinforces the base with carbon fiber cloth or angle steel, then installs UHPC exterior wall panels, preventing uneven panel stress caused by base deformation. Meanwhile, the base wall must have good moisture resistance, and the outer side of exterior walls must be properly waterproofed to prevent water vapor penetration from affecting the stability of installation nodes.

#Reserved Conditions: Meeting Installation and Functional Requirements The base wall must reserve compliant installation conditions in advance, including embedded parts positions, pipeline holes, etc. Qinglong Group clarifies the specifications, spacing, and positions of embedded parts at the detailed design stage, requiring precise embedding during base construction; the anchoring strength of embedded parts must be verified through pull-out tests. For pipeline crossing areas, the base wall must reserve holes in advance, with hole dimensions 10-20mm larger than the pipeline diameter, to facilitate later installation and sealing. In the Shenzhen Yirui Biotechnology Building project, the base wall precisely reserved embedded parts and holes according to installation drawings provided by Qinglong, greatly improving on-site installation efficiency and avoiding damage to the base from later wall chiseling.

The installation quality of UHPC exterior wall panels begins with strict control of the base wall. Drawing on 28 years of industry experience, Qinglong Group has established full-process standards from base wall inspection and treatment to installation acceptance, ensuring the base wall meets the installation requirements of UHPC exterior wall panels. Choosing a professional UHPC manufacturer as your partner not only provides quality panel products, but also comprehensive technical guidance, building a solid foundation for project quality.