How to Make Prefabricated Cement Houses
Prefabricated cement houses adopt the 'factory prefabrication + on-site assembly' model, achieving efficient, environmentally friendly, and safe construction goals through modular design.
I. Core Components Prefabricated in the Factory
The core components of prefabricated cement houses (such as walls, floors, and beams and columns) are cast in one piece using high-precision molds in specialized production bases. Each module integrates a Φ8-Φ12 steel reinforcement mesh as its framework to enhance structural strength; EPS slots are reserved for filling with thermal insulation materials to improve thermal performance; and waterproof layers and pipeline channels are pre-embedded to reduce secondary on-site construction. The concrete used has a grade of C30-C40, with a compressive strength of 25-30 MPa, which is 1.5 times that of traditional brick-and-mortar structures, meeting the requirements for high-rise buildings or high seismic resistance.
II. On-Site Assembly Process
Foundation Treatment After leveling the site, a concrete cushion is poured. In some projects, a white plastic sheet is laid over the foundation surface to prevent excessive evaporation of concrete moisture, which could cause cracking, and to enhance the strength of the base layer.
Module Hoisting Using a crane, the prefabricated modules (such as 5-ton foundation piles) are precisely hoisted to the designated positions according to the design drawings and fixed with base plates and expansion screws to ensure the stability of the connection between the modules and the foundation.
Connection and Fixation The modules are connected using a prestressed bolt + welded steel plate dual connection method: the bolts provide initial fixing force, and the welded steel plates enhance the overall structural integrity; the gaps between the beams and foundation piles are filled with foam sealant to prevent rainwater infiltration; and cement is applied to the fixed positions of the nuts to prevent corrosion of the metal components.
Gap Treatment After all components are connected, grouting treatment is carried out on the gaps between the modules, filling them tightly with high-strength cement grout to ensure there are no weak points in the structure and improve seismic and wind resistance.
III. Technical Advantages
The modular design enables the overall construction of a 100㎡ house to be completed in just 2 days, with construction efficiency increased by 80% compared to traditional methods; factory production reduces on-site wet work, and construction waste is reduced by 90%; the structure has a seismic fortification intensity of 7 degrees (capable of withstanding the level of destruction of the Wenchuan earthquake) and a wind resistance rating of 10, making it suitable for earthquake-prone and strong wind areas. This model combines efficiency, environmental protection, and safety through industrialized standard processes.
