Prefabricated Concrete Brick Wall for Houses

The following are the characteristics of prefabricated concrete brick walls for houses:

Structural Features:
Prefabricated concrete components for houses typically employ a full-frame shear wall structure, where walls, beams, columns, and floor slabs are all cast as a single unit using reinforced concrete, belonging to a prefabricated assembly structure. The modules are relatively heavy (15 - 30 tons) and do not use traditional brick walls. Instead, standardized prefabricated components are manufactured in factories and assembled on-site to form an integrated structure. Some wall-building methods, such as the vertical mold method in Romania, directly pour standard concrete into reusable molds to form walls without joints through specific processes, avoiding the weak connections of traditional brick walls.

Advantages:

1. High Construction Efficiency:
   Prefabricated components are mass-produced in factories and can be cast into various shapes and sizes. The on-site assembly speed is fast, significantly shortening the construction period. For example, the vertical mold method does not require brick-by-brick stacking; workers directly operate the unset concrete, further improving construction efficiency.

2. Excellent Strength and Seismic Performance:
   The integrated reinforced concrete structure has high compressive and flexural strength, with strong load-bearing capacity. A one-story structure can withstand a magnitude 9 earthquake, while a two- to three-story structure can withstand a magnitude 7 - 8 earthquake. The flexible connection design between modules can effectively absorb seismic energy and reduce structural damage.

3. Outstanding Fire Resistance:
   Concrete is a non-combustible material with a fire resistance limit of over 3 hours. The gaps between modules are filled with fire-resistant rock wool, further preventing the spread of fire and meeting the fire protection requirements for high-rise buildings.

4. Significant Cost-Effectiveness:
   The cost of mass-producing cement is relatively low. For example, for a 100㎡ house, the main construction cost is approximately 80,000 - 100,000 yuan, which is 20% lower than that of a brick-concrete structure; the labor cost is only 10,000 - 15,000 yuan, which is 60% lower than that of a brick-concrete structure, making it suitable for large-scale promotion.

5. Long Service Life:
   The design life is 60 - 80 years. The strength of concrete increases over time (for example, a 13-year field test in a pilot project in Hunan showed a 15% increase in strength), and its durability is superior to that of traditional brick-concrete structures.

Supplementary Information on Special Wall-Building Methods:
The vertical mold method in Romania directly pours concrete into reusable molds to form walls without joints, avoiding the weak connections of traditional brick walls while retaining the strength advantages of concrete. This process combines the characteristics of prefabrication and cast-in-place construction, further improving construction efficiency and structural integrity.