Cement Prefabricated Panel House Installation

The installation of cement prefabricated panel houses must strictly adhere to the following key points to ensure structural safety and construction quality:

1. Base Layer Treatment
Before installation, pre-treat the wall and ceiling base layers: Moisten the wall and ceiling with water one day in advance to avoid standing water; use high-grade cement mortar (e.g., above M10) to level the wall and ceiling, ensuring a flat, solid surface with uniform mortar coverage and no hollow areas. Base layer treatment directly affects the connection stability between the prefabricated panels and the wall, serving as a crucial step to prevent later cracking.

2. Panel Bottom Support Setup
During the lifting and concrete pouring of the prefabricated panels, temporary supports (such as wooden beams or steel supports) must be installed beneath the panels, with support spacing not exceeding 1.5 meters to prevent panel bending or breakage due to self-weight or construction loads. For floors with spans exceeding 4 meters, permanent steel supports should be added according to design requirements to enhance overall load-bearing capacity.

3. Panel Joint and Steel Bar Connection

• Panel Joint Treatment: Fill the gaps between panels in two stages: the lower 2 cm with cement mortar and the upper 4 cm with C20 concrete after the main structure is completed, ensuring dense and void-free joints.
• Steel Bar Connection: After lifting the floor panels, bend the panel-end steel bars downward at a 45-degree angle to form a cross, add a continuous steel bar (with a diameter of at least 8 mm) in the middle, and tie it securely; for larger spans, add a double-layer, two-way steel bar mesh at the panel bottom, with steel bar specifications and spacing meeting design drawing requirements.

4. Support Distance and Structural Column Treatment
The support length of the floor panel on the wall is generally 8 cm (e.g., for a 24 cm thick wall, support 8 cm on each side, leaving 8 cm in the middle for concrete pouring). If structural columns are encountered, add panel strips (with a width of at least 30 cm) on both sides of the column, equipped with reinforced steel bars connected reliably to the structural column to distribute loads and enhance overall structural integrity.

5. Installation Process Specifications

• Preparation Stage: Verify the dimensions, quantity, and installation positions of the prefabricated panels, and prepare materials such as cement mortar and steel bars, as well as lifting equipment.
• Base Layer Cleaning: Remove debris from the installation location and lay a 20-30 mm thick cement mortar bed to ensure strong adhesion between the bed and the base layer.
• Lifting and Adjustment: Slowly lift the prefabricated panels to the design positions and use crowbars to fine-tune alignment, avoiding violent impacts that could damage the panels.
• Curing and Protection: After installation, cover the panels with a moisture-retaining film for 7 days of curing, maintaining a moist state and avoiding walking or stacking heavy objects during this period.

6. Calculation and Drawing Review
Plan the number of floor panels in advance based on architectural drawings, clarify the distribution positions of panels with different widths, and draw installation diagrams if necessary. Review parameters such as span and load to ensure they meet design requirements, confirming that the prefabricated panel specifications match the actual project to avoid structural safety hazards caused by calculation errors.