🔩 Bolt System vs. Tie Bar System in Aluminum Formwork: A Comprehensive Comparison
In modern construction, aluminum formwork systems are favored for their efficiency, precision, and sustainability. Among these, the Bolt System and Tie Bar System are two primary reinforcement methods, each with its own advantages and disadvantages. This article provides a detailed comparison of these systems in terms of molding quality, construction efficiency, cost control, and application scenarios to help you make an informed decision.
🧱 Molding Quality and Post-Construction Maintenance
Bolt System: Reinforcement is achieved by manually tightening nuts, which may lead to inconsistent wall thickness and less smooth concrete surfaces. After formwork removal, multiple bolt holes remain in the wall, requiring additional sealing and increasing the risk of water leakage and maintenance costs.
Tie Bar System: Utilizes high-precision disposable tie bars to secure the formwork without wall-penetrating holes, ensuring consistent wall thickness and smoother concrete surfaces. After formwork removal, only the protruding parts of the tie bars need to be cut off, leaving no holes in the wall and reducing post-construction maintenance costs.
⚙️ Installation and Construction Efficiency
Bolt System: Requires cement spacers and rubber sleeves to control wall thickness, making the installation process complex and less stable.
Tie Bar System: Takes advantage of the lightweight and high-strength properties of aluminum, allowing for easy installation with minimal adjustments and superior stability. The use of lightweight clamps and square steel pipes reduces the physical workload on workers and improves construction efficiency.
💰 Cost and Economic Efficiency
Bolt System: Higher cost due to expensive metal components and the need for hole sealing and waterproofing after formwork removal.
Tie Bar System: Lower cost metal components and no need for hole sealing, but tie bars are consumables, with an average cost of approximately RMB 40,000 to 50,000 per building.
✅ Application Recommendations
Bolt System: Suitable for traditional construction projects with limited budgets and less stringent requirements for concrete surface flatness.
Tie Bar System: Ideal for high-standard projects requiring superior concrete molding quality, precise vertical alignment, and waterproofing, especially when time constraints are tight.
Guandong Fojian GOWE New Materials Co., Ltd.
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