Cast-in-Situ or Prefabricated for Houses

Both cast-in-situ and prefabricated methods for houses have their own advantages and disadvantages. The specific choice should be made based on needs. If the budget is sufficient and safety and durability are emphasized, choose cast-in-situ. If the budget is tight and there are requirements for construction speed, choose prefabricated and strengthen the treatment.

Advantages of Cast-in-Situ Slabs

• Good overall performance: Cast-in-situ slabs are formed by directly pouring concrete onto the house's framework at the construction site, creating an integral structure with the entire building. This integrity enables the house to better distribute stress when facing external forces, reducing the risk of damage caused by excessive local stress. For example, during an earthquake, the cast-in-situ slab is tightly connected to the house's framework and is less likely to collapse, effectively protecting the lives of the occupants.
• Strong earthquake resistance: Due to its excellent integrity, cast-in-situ slabs have better earthquake resistance in natural disasters such as earthquakes. It can deform along with the building structure, avoiding damage caused by structural separation and providing more reliable earthquake protection for the house.
• Excellent waterproof performance: Cast-in-situ slabs are solid structures without gaps or holes, effectively preventing the penetration of moisture. In contrast, prefabricated slabs have holes in the middle, through which moisture can easily seep into the interior, leading to problems such as moldy and peeling walls. Cast-in-situ slabs do not have such hidden dangers.
• Flexible renovation: During subsequent house renovations, cast-in-situ slabs can be freely drilled, removed, etc. according to needs without causing significant impacts on the overall structure. However, prefabricated slabs have limited load-bearing capacity and are subject to more restrictions during renovation. Random drilling may affect the safety of the house.

Advantages of Prefabricated Slabs

• Low price: Prefabricated slabs are made in advance in factories, and the production process can achieve large-scale and standardized production, reducing production costs. Therefore, compared with cast-in-situ slabs, prefabricated slabs are cheaper and are suitable for users with limited budgets.
• Fast construction speed: Prefabricated slabs can be directly transported to the construction site for installation without the need for on-site pouring and curing processes like cast-in-situ slabs, greatly shortening the construction period. For projects that urgently require occupancy or have strict requirements for construction time, prefabricated slabs are a good choice.

Disadvantages of Prefabricated Slabs

• Poor integrity: Prefabricated slabs are made independently one by one and then installed together by splicing. Their integrity is not as good as that of cast-in-situ slabs. When subjected to external forces, cracks are prone to appear at the splicing joints, affecting the structural safety of the house.
• Weak earthquake resistance: Due to poor integrity, prefabricated slabs have weak earthquake resistance in natural disasters such as earthquakes. During an earthquake, the connections between prefabricated slabs are prone to loosening, increasing the risk of house collapse.
• Poor waterproof and thermal insulation performance: As mentioned earlier, the holes in the middle of prefabricated slabs can easily lead to moisture penetration, and their thermal insulation performance is also poor. In summer, the indoor temperature is prone to rise; in winter, the indoor heat is prone to dissipate, requiring additional waterproof and thermal insulation measures.