Concrete Prefabricated House Construction

Concrete prefabricated house construction adopts the method of factory-prefabricated core components and on-site assembly, offering advantages such as shortened construction periods, cost reduction, environmental friendliness, controllable quality, and wide application scenarios.

Technical Principles
The core process of concrete prefabricated houses involves factory prefabrication and on-site assembly. At specialized production bases, core components such as walls, floors, and beams are cast in one go using high-precision molds. Each module integrates multiple structures, including steel reinforcement skeletons, insulation layers, waterproof layers, and pre-embedded pipelines, forming flexible 'building blocks'. For example, using C30-C40 grade concrete with built-in Φ8-Φ12 steel reinforcement mesh, the compressive strength reaches 25-30MPa, 1.5 times that of traditional brick-and-mortar structures; wall slots are reserved for EPS insulation layers, improving thermal insulation performance by 40% when embedded on-site.

Construction Process

1. Factory Prefabrication: Core components are produced in the factory, with a single 30㎡ module taking only 7 days. Built-in pipelines and insulation layers achieve structural and functional integration.
2. On-site Assembly: After transportation to the site, components are connected to form an overall framework using prestressed bolts and welded steel plates. With the cooperation of three workers and a crane, a single module can be installed in 4 hours, and a 100㎡ house can be fully erected in just 2 days.

Advantages

1. Shortened Construction Period: Traditional self-built houses take 3-6 months, while a 100㎡ concrete prefabricated house takes only 2 days; a real estate project in Shanghai adopted modular construction, reducing the completion and delivery period from 2.5-3 years to 1 year.
2. Cost Reduction: For a 120㎡ rural self-built house, the cost of a traditional brick-and-mortar structure is approximately 180,000-220,000 yuan, while the cost of the main modules of a concrete prefabricated house is only 120,000-150,000 yuan, reducing the overall cost by 30%.
3. Environmental Friendliness: Factory production achieves a 95% recycling rate of off-cuts, with no dust or sewage discharge on-site, and construction waste is only 10% of that of traditional construction; environmentally friendly concrete and water-based paints are used, with formaldehyde emissions ≤0.05mg/m³, well below the national standard (0.1mg/m³).
4. Controllable Quality: Each prefabricated component has a detailed 'ID card' recording project name, product model, production date, etc., with steel reinforcement positioning accuracy controlled to the millimeter.
5. Wide Application Scenarios: Suitable for rural self-built houses, commercial spaces, cultural and tourism projects, etc. For example, a public housing project in Shenzhen, Guangdong, was assembled from 6,028 concrete modules and has housed over 2,000 residents.