Images of Prefabricated Floor Panels for House Construction

Currently, we cannot directly provide images of prefabricated floor panels for house construction, but we can offer a detailed description of their features and manufacturing process to help you form an intuitive understanding.

Prefabricated floor panels are widely used as flooring materials in early 20th-century buildings. Their core feature is a long, rectangular cement structure with evenly distributed cylindrical holes inside. This design not only reduces the self-weight of the panels but also enhances structural stability through the holes, while also providing space for pipeline installation. Typical prefabricated floor panels can reach lengths of 4-6 meters, widths of about 0.5-1.2 meters, and thicknesses adjusted between 10-20 centimeters depending on the span requirements. The diameter of the holes usually accounts for 1/3 to 1/2 of the panel thickness.

The manufacturing process consists of four key steps:

1. Model Construction: A hollow frame is constructed using dry wooden planks, with the frame dimensions strictly matching the design specifications. The gaps between the wooden planks are sealed with putty to prevent concrete leakage.
2. Rebar Placement: Inside the model, a rebar mesh is laid out according to the design spacing. The main rebars generally have a diameter of no less than 8 millimeters, and the stirrup spacing is controlled between 15-20 centimeters. The intersections of the rebars are tied and fixed with wire.
3. Concrete Pouring: Concrete with a grade not lower than C30 is used for pouring. It needs to be vibrated in layers to eliminate air bubbles, and the surface is smoothed with a wooden trowel to ensure flatness.
4. Form Removal and Curing: After being left at room temperature for 24 hours, the wooden planks are removed. Subsequently, a 28-day standard curing process is carried out, during which the humidity must be maintained at no less than 90%, and the temperature controlled at 20±2℃.

Application Scenarios and Precautions:
Prefabricated floor panels are suitable for residential floors, balcony slabs, and other parts with spans not exceeding 6 meters. During installation, the bedding mortar method should be used to ensure a dense bottom, and the panel joints should be filled with fine aggregate concrete and properly cured. It should be noted that prefabricated floor panels have been gradually phased out in modern buildings, which now use cast-in-place concrete floors to improve overall seismic performance. They are still used in temporary buildings or specific restoration projects.