Prefabricated Cement Precast Panel House

Prefabricated cement precast panel houses are a form of construction that involves industrial production of building components and on-site assembly, characterized by high efficiency, safety, and environmental friendliness.

I. Structure and Production Method Prefabricated cement precast panel houses utilize factory-made cement components (such as beams, slabs, walls, and columns), which are cast as modular units using reinforced concrete. For example, a framework is constructed using Φ10-Φ14 national standard deformed steel bars, paired with C35 concrete. A single module can weigh over 20 tons, with wall thickness ranging from 150-200mm and floor slab thickness of 120mm. Precast panels come in two types: solid and hollow. The hollow structure achieves lightweighting by reducing non-load-bearing concrete while maintaining structural strength.

II. Construction Efficiency Factory-standardized production is unaffected by weather conditions, with a single module (30㎡) taking only 7 days from steel bar tying to casting. During on-site assembly, a 50-ton crane, assisted by 3 workers, can complete the lifting of a single module in 4 hours. The overall installation of a 100㎡ house takes only 1 day, reducing the construction period by 90% compared to traditional methods. China's precast concrete technology began in the 1950s, initially applied in factory and residential construction, and has seen a resurgence in the 21st century due to its production efficiency and environmental advantages.

III. Performance Advantages

1. Earthquake and Wind Resistance: Capable of withstanding magnitude 8 earthquakes (designed for a seismic fortification intensity of 7 degrees), with module connections remaining intact under 12-level typhoons. For instance, during the passage of Typhoon摩羯 in Zhangzhou, Fujian in 2024, a prefabricated cement house B&B withstood 11-level winds without structural damage.
2. Fire and Heat Insulation: The concrete has a fire resistance limit of over 3 hours, superior to traditional brick-concrete structures (2 hours).
3. Environmental Durability: Construction waste is reduced by 90%, with a service life of approximately 30-50 years (data for traditional prefabricated panel houses).

IV. Application Scenarios and Policies Originating in the early 20th century for floor and roof insulation layers, residential buildings constructed before 1985 in China often adopted this structure. Since 2022, renovation policies have focused on repairing and upgrading prefabricated panel houses, with only dangerous buildings being demolished. Current prefabricated buildings, through modular factory-made components (such as CMC composite modular buildings), have shortened construction periods by 30% compared to traditional methods.

V. Market Development Chinese prefabricated houses are in high demand overseas. In the first four months of 2026, the Guangzhou Customs District exported mobile houses worth 1.4 billion yuan, a year-on-year increase of 38.1%; Shenzhen Port exports reached 1.68 billion yuan, a year-on-year increase of 19.6%. The technological routes include steel structures (lightweight and suitable for high-rise buildings) and concrete (high market acceptance), forming a global competitive advantage.