Prefabricated Assembly House Wall
The walls of prefabricated assembly houses mainly include four types: panel prefabricated building walls, prefabricated steel-skeleton concrete walls (PCT walls), composite structure walls, and modular building walls, each with unique technical characteristics.
Panel prefabricated building walls use prefabricated wall panels and floor slabs as core components, constructing walls through factory prefabrication and on-site assembly. This wall form can expand the usable area of buildings because its component thickness is relatively small, reducing the space occupied by walls. However, its design flexibility is somewhat limited and is typically suitable for building projects with a high degree of standardization, such as residential communities and schools.
Prefabricated steel-skeleton concrete walls (PCT walls) are a new type of prefabricated wall technology aimed at addressing the challenges of traditional prefabricated walls, such as difficult installation, poor control over grouting quality, and low construction efficiency. PCT walls extend sufficiently long 'steel reinforcement tails' from within the wall. After aligning the upper and lower walls, these 'tails' can form an integral connection directly without the need for hole alignment. Once connected, a single pour of concrete fills the gaps. This connection method not only simplifies the construction process but also enhances the overall integrity and seismic resistance of the walls. After applying PCT walls, the construction period for a single-story structure can be reduced from 7 days to 4.5 days, with work efficiency increased by approximately 30%, significantly improving construction efficiency.
Composite structure walls typically adopt a composite structure, filled with materials such as sound-insulating cotton and aerated concrete, which offer better sound insulation performance than traditional brick walls. During component assembly, seams are filled with sealing materials to prevent sound transmission through gaps. Actual test data shows that qualified prefabricated house walls can achieve sound insulation levels that meet national standards. Additionally, the exterior wall insulation layer is installed integrally during factory prefabrication, ensuring a tighter bond between the insulation material and the wall, effectively blocking external temperature changes from affecting the interior and improving the building's energy efficiency.
Modular building walls represent a higher level of integration in prefabricated assembly buildings, with wall designs that are more integrated and standardized. Modular building walls typically integrate walls, doors, windows, and pipelines into a single module, facilitating rapid on-site assembly and improving construction efficiency and quality.
