Disadvantages of Plastic Building Formworks:
- Initial Cost: The production cost of high-quality plastic building formworks is relatively high, which may lead to a higher initial investment compared to some traditional materials. This cost factor can be a deterrent for small-scale construction projects with tight budgets.
- Temperature Sensitivity: Plastic materials can expand and contract with changes in temperature. In extreme heat or cold conditions, this property may cause dimensional instability, affecting the accuracy of the formwork and potentially leading to concrete quality issues. For instance, in very hot weather, the formworks might expand and create gaps, allowing concrete slurry to leak.
- Limited Load-Bearing Capacity: Generally, plastic formworks have a lower load-bearing capacity compared to steel formworks. They may not be suitable for heavy-duty construction projects where large loads need to be supported, such as high-rise building foundations. Extra reinforcement or alternative support systems may be required, adding complexity and cost.
- Environmental Concerns: Although plastic formworks can be recycled, the recycling process requires proper facilities and management. Improper disposal of plastic waste can have a negative impact on the environment, contributing to pollution and waste accumulation.
Advantages of Plastic Building Templates:
- Lightweight: Plastic formworks are much lighter than traditional wooden or steel templates. This makes them easier to transport, handle, and install on construction sites, reducing labor intensity and improving construction efficiency. For example, workers can carry and position plastic formworks more quickly, saving time during the formwork erection process.
- Durable: They have good resistance to corrosion, moisture, and insects. Unlike wooden formworks that may rot or be damaged by termites, plastic formworks can maintain their structural integrity over a long period. This durability ensures a longer service life, reducing the need for frequent replacements and overall project costs.
- Smooth Surface Finish: The surface of plastic formworks is smooth, which results in a better finish for the concrete. It minimizes the need for additional surface treatments after the concrete is poured, saving both time and cost. The smooth surface also allows for easier demolding, preventing damage to the concrete structure.
- Customizable: Plastic can be molded into various shapes and sizes, offering great flexibility in design. Contractors can order formworks that are specifically tailored to the unique requirements of a project, facilitating the construction of complex architectural features.
