Prefabricated House Reinforcement Video
Key points from the video on prefabricated house reinforcement are as follows:
Reinforcement of Prefabricated Hollow Slabs: For the prefabricated hollow slabs commonly found in houses built in the 1980s, the reinforcement method should be selected based on the increase in load. When the load increase is minimal, there are two primary methods. First, carbon fiber can be directly adhered to the bottom of the hollow slab. Carbon fiber has high strength and good corrosion resistance, effectively enhancing the load-bearing capacity of the hollow slab. Second, steel beams can be added to the bottom of the slab. The new steel beams will alter the stress system of the hollow slab, enabling it to better withstand loads. When the upper load increases significantly and the prefabricated hollow slab has only bottom reinforcement without longitudinal reinforcement at the top, adhering carbon fiber sheets to the bottom of the slab is a suitable choice. The carbon fiber sheets can tightly bond with the hollow slab, jointly bearing the load and improving the overall structural stability.
Reinforcement of Prefabricated Floor Slabs with Openings: The reinforcement measures for prefabricated floor slabs with openings depend on the location of the openings. If the opening is at the mid-span, which is a region with high stress on the floor slab, equal-strength carbon fiber sheets should be adhered to both sides of the opening and the end of the slab to supplement the flexural capacity. The equal-strength carbon fiber sheets can provide additional flexural strength, ensuring that the floor slab can still meet load-bearing requirements after the opening is made. Before performing the adhesion operation, a detector should be used to locate the position of the reinforcement in the slab to avoid accidentally damaging it, ensuring the accuracy and safety of the construction. If the opening is at the edge of the support, which is a critical area for shear resistance of the floor slab, the opening will weaken its shear capacity. In this case, it is recommended to fill the opening with polymer mortar. Polymer mortar has good adhesion and strength, capable of compensating for the weakened shear capacity and ensuring the structural safety of the floor slab.
These technical points on prefabricated house reinforcement can be further explored in relevant reinforcement technology discussion videos, which typically use practical cases and detailed explanations to help people better master reinforcement methods and techniques.
