Cement Prefabricated House Production Technology

Cement prefabricated house production technology is an efficient construction system based on factory-based production and modular assembly, achieving house construction through standardized component prefabrication and rapid on-site assembly.

Technical Principles and Core Structure

Cement prefabricated houses employ an integrated reinforced concrete prefabrication process, breaking down the house into modular components such as walls, floor slabs, and beams. Each module integrates a steel reinforcement framework, insulation layer, waterproof layer, and pre-embedded piping structures, forming a high-strength composite structure:

• Mechanical Properties: The steel reinforcement framework provides tensile strength, while the concrete layer bears compressive forces. Together, they achieve a compressive strength of 25-30 MPa, 1.5 times that of traditional brick-and-mortar structures. Modules are connected via prestressed bolts and welded steel plates, forming an integrated framework capable of withstanding wind loads up to Level 10 and seismic intensity of 7 degrees (able to resist the destructive force of the Wenchuan earthquake).
• Functional Integration: Walls are designed with slots for EPS insulation panels, which, when inserted on-site, improve thermal insulation by 40%. Pre-embedded piping structures reduce the need for post-construction trenching, enhancing construction efficiency.

Production Process

1. Factory Prefabrication Stage: Core components such as walls and floor slabs are cast in one piece using high-precision molds at specialized production bases. Materials include C30-C40 grade concrete with embedded Φ8-Φ12 steel reinforcement meshes to ensure structural strength. Environmentally friendly concrete and water-based paints are used, with formaldehyde emissions ≤0.05 mg/m³ (well below the national standard of 0.1 mg/m³).
2. On-Site Assembly Stage: After transportation to the site, components are positioned and assembled according to design drawings using lifting equipment. Special attention is paid to the sealing and load-bearing capacity of joint connections, followed by the installation of doors, windows, and surface finishes. Some processes require prior site surveys to ensure foundation flatness meets requirements.

Technical Highlights

• Efficiency and Cost: Parallel operations between factory prefabrication and on-site assembly reduce construction time by over 50% compared to traditional brick-and-mortar structures, lowering overall costs by 30% (e.g., total expenses for a 120 m² rural self-built house can be controlled within 200,000 yuan).
• Environmental Friendliness: Factory production achieves a 95% recovery rate for off-cuts, reduces on-site construction waste by 90%, and eliminates dust and sewage emissions, meeting green building standards.
• Customization: Users can customize parameters such as area and thickness, subject to prior confirmation of structural safety with the manufacturer. Suitable for rural self-built houses, commercial spaces, cultural tourism projects, and other scenarios, particularly in areas with stable geological conditions and sensitivity to construction time and costs.