Steel Wire Mesh Reinforcement for Prefabricated Panel Houses

Steel wire mesh reinforcement for prefabricated panel houses is an effective method to enhance the crack resistance and overall stability of the house by laying steel wire mesh on the surface of the prefabricated panels or the exterior of the walls and applying cement mortar for plastering or spraying. The details are as follows:

Operation Method
The core steps of steel wire mesh reinforcement include laying the steel wire mesh and covering it with mortar. For the surface of prefabricated panels, the base layer should be cleaned and cracks should be treated first. Then, a steel wire mesh that meets the specifications (such as a galvanized steel wire mesh with a mesh size of 10mm×10mm and a diameter of 1.2mm) should be laid. After being fixed with anchors or bonding materials, the cement mortar should be applied in layers by plastering or spraying (usually with a thickness of 15-20mm) to form a composite reinforcement layer. For wall reinforcement, a steel wire mesh cement mortar facing layer can be added to the exterior of the wall. The steel wire mesh should be reliably connected to the original wall through planted rebars or chemical anchors, and then the mortar should be applied in layers to the designed thickness. This method effectively restricts crack propagation and enhances the overall structural integrity through the synergistic action of the steel wire mesh and the mortar.

Reinforcement Effects
Steel wire mesh reinforcement can significantly improve the performance of the house:

1. Crack Resistance: The high tensile strength of the steel wire mesh can disperse stress, reducing cracks caused by temperature changes, foundation settlement, or increased loads. It is especially suitable for the crack repair and prevention of old prefabricated panel houses.
2. Shear Resistance: Adding a steel wire mesh facing layer to the exterior of the wall can enhance the shear strength of the wall, improve the stress performance of the original structure under horizontal loads (such as earthquakes and wind loads), and increase the seismic resistance of the house.
3. Overall Stability: Through the composite action of the steel wire mesh and the mortar, the original structure and the reinforcement layer form an integral whole, jointly bearing the loads and effectively delaying the process of structural deterioration.

Precautions

1. Customized Plan: Before reinforcement, a comprehensive assessment of the current condition of the house (such as crack distribution and material aging degree), load changes (such as additional floors or equipment), and usage functions (such as residential or commercial use) should be carried out to ensure that the reinforced house meets the current building codes (such as seismic fortification requirements).
2. Control of Construction Interference: Dry operations (such as mortar spraying) and local reinforcement should be preferred to reduce interference with normal use. During construction, the surrounding areas should be protected to avoid mortar splashing or temporary overloading of the structure.
3. Material Compatibility: The performance degradation of the original structural materials (such as concrete carbonation and steel bar corrosion) should be considered to avoid the failure of the synergistic action between the new and old materials due to insufficient bonding strength or inconsistent deformation. If necessary, interface treatment agents or anchors can be added.