Concrete Prefabricated House

Concrete prefabricated houses are a type of prefabricated assembled building, constructed by industrializing the production of building components and assembling them on-site, offering advantages such as modularity, environmental friendliness, efficiency, and cost-effectiveness.

Technical System and Component Types

Concrete prefabricated houses are centered around prefabricated concrete structures, with main components including prefabricated beams, slabs, walls, and columns. For example, the Nanjing Jindi Yufang project employs a prestressed prefabricated concrete assembled integral frame structural system, achieving building functionality through the combination of standardized components. Component production is typically completed in factories using processes such as mold casting and steam curing to ensure dimensional accuracy and structural strength, with errors controlled to the millimeter level, laying the foundation for subsequent on-site assembly.

Construction Mode and Core Advantages

1. Modular Integration: Buildings are broken down into independent modules (such as concrete modules), manufactured in factories, and then transported to the site for assembly. For instance, a social housing project in Shenzhen, Guangdong, was assembled from 6,028 concrete modules, reducing the construction period from the traditional 2.5-3 years to just 1 year, and decreasing on-site labor by approximately 50%.
2. Environmental Friendliness and Efficiency: Factory-based production reduces on-site noise, dust, and construction waste. Regions like Fujian have achieved over 70% reduction in construction waste through policy support, while also minimizing disturbances to the surrounding environment.
3. Cost Advantages: In European and American markets, concrete prefabricated houses are highly cost-effective due to high labor costs. For example, while construction workers in the United States earn daily wages ranging from $200 to $500, a prefabricated house in China (including basic decoration) costs only around 200,000 RMB, significantly lower than the cost of on-site casting.

Application Scenarios and Market Performance

1. Domestic Applications: Initially used for factory and low-rise residential construction, concrete prefabricated houses have seen a resurgence in the 21st century and are now applied to high-rise residential buildings (such as prefabricated shear wall structures), gradually becoming an important direction for residential industrialization.
2. Overseas Exports: In the first four months of 2026, the export of modular houses (including concrete prefabricated houses) from the Guangzhou Customs district reached 1.4 billion RMB, a year-on-year increase of 38.1%. European and American markets, with their large housing shortages and high labor costs, have a strong demand for prefabricated houses, with China's prefabricated building exports growing by 45% in the first quarter of 2023.

Technical Challenges

High-precision control is required at module connections (with errors measured in millimeters), and there are high demands on transportation and lifting equipment. For example, although box-type prefabricated buildings can increase construction speed by 50%-70%, they rely on large transportation equipment, and the heavy weight of modules (often several tons) poses challenges to road bearing capacity and on-site lifting capabilities.