Prefabricated Houses in Jurong

In Jurong, prefabricated panel brick-concrete houses with an age of over 20 years require special attention to safety, and there are also prefabricated component-related production enterprises in the local area.

Safety Risks of Prefabricated Panel Houses Over 20 Years Old

Some brick-concrete houses in Jurong that are over 20 years old use prefabricated panel floors. Due to their early construction age, these structures are prone to deflection deformation (i.e., sagging in the middle of the floor) after long-term load-bearing. The core risks are as follows:

1. Material Aging: The strength of the concrete may decrease due to factors such as carbonation and freeze-thaw cycles, leading to a reduction in the floor's load-bearing capacity;
2. Steel Bar Corrosion: If the thickness of the concrete cover protecting the steel bars inside the prefabricated panels is insufficient or there are cracks, the steel bars are prone to corrosion and expansion, further weakening the structural performance;
3. Connection Node Failure: The connections between the prefabricated panels and the walls or beams may become loose or cracked due to long-term stress, affecting the overall stability.

Key Indicators for Inspection and Evaluation:

• Concrete Strength: Test the compressive strength of the concrete using methods such as the rebound method or core drilling method to determine if it meets the original design requirements;
• Degree of Steel Bar Corrosion: Evaluate the risk of steel bar corrosion using the potential difference method or half-cell potential method. Severe corrosion requires reinforcement treatment;
• Crack Width and Distribution: Measure the width of floor cracks. If the width exceeds 0.3mm, closure treatment or structural reinforcement may be required;
• Deflection Deformation Amount: Use tools such as laser rangefinders to detect the amount of floor sagging. If it exceeds the specified limit (e.g., L/250, where L is the span), timely treatment is necessary.

Current Situation of the Prefabricated Component Industry in Jurong

Jurong Jiuda Jiansheng Prefabricated Component Co., Ltd. is a local enterprise engaged in the manufacturing and processing of concrete prefabricated components. Its business scope may include the production of prefabricated floor panels, wall panels, beams, columns, and other components. These enterprises provide standardized components for new construction projects or the renovation of existing buildings, helping to improve construction efficiency and quality. If reinforcement or replacement of old prefabricated panel houses is required, such enterprises can be contacted to customize prefabricated components that comply with regulations. However, it is necessary to ensure that the new components are reliably connected to the original structure and comply with current building standards.

Suggestion: Owners of prefabricated panel houses over 20 years old should regularly commission professional institutions for inspections and take measures such as reinforcement, repair, or component replacement based on the evaluation results to ensure living safety.