Mivan Wall Tie

Product Specification

The Aluminum Formwork Wall Tie System developed by Mitro Industries is an advanced solution used in modern aluminum formwork construction. Unlike the conventional tie-rod system that requires drilling holes through the formwork panels, this system utilizes a wall tie reinforcement method. As a result, once the formwork is removed, no holes remain in the concrete wall, significantly reducing the risk of external wall leakage.

This system provides high construction quality, faster installation, and lower overall project cost, making it an efficient choice for large-scale construction projects.

Introduction

The wall tie is a thin steel strip typically manufactured with a thickness ranging from 1.8 mm to 3.0 mm. Its length is designed according to the thickness of the wall or column being constructed.

During concrete pouring, the wall tie functions as a locking element that tightly holds the aluminum formwork panels on both sides of the wall. This prevents formwork expansion or displacement caused by the pressure of wet concrete, ensuring structural stability and accurate wall dimensions during construction.

At Mitro Industries, wall ties are manufactured using high-strength manganese steel, ensuring durability and performance. Each production batch undergoes strict tensile strength testing, confirming that every wall tie can withstand a minimum pull force of 28 kN.

The installation process is simple and efficient. Instead of drilling holes through the formwork panels, grooves are milled into the side ribs of the aluminum formwork. The wall ties are then installed at the panel joints and secured using pins, connecting the formwork panels on both sides of the wall.

After the concrete has fully set, the aluminum formwork panels are removed. The wall tie remains embedded within the concrete wall, with both ends slightly protruding from the surface. Once the formwork removal is complete, the exposed portions of the wall tie are snapped off easily.

The wall tie is designed with a V-shaped stress concentration structure, allowing it to break approximately 5 mm inside the wall surface. This ensures that the remaining portion stays inside the concrete and does not interfere with plastering or finishing work.

Advantages

The wall tie system ensures precise and consistent wall thickness. The round holes at both ends of the wall tie are connected to the aluminum formwork panels using pins, ensuring accurate alignment. Because the length of each wall tie is fixed, the wall thickness remains uniform throughout the structure.

In contrast, traditional tie-rod systems rely on tightening nuts, which may vary in torque and cause uneven wall thickness. The wall tie system eliminates this issue and improves the vertical alignment and surface quality of the wall.

Another major advantage is that no holes remain in the wall after formwork removal. Once the exposed ends of the wall ties are snapped off, the wall surface remains solid, eliminating potential leakage points and improving long-term durability.

Installation

The wall tie system also offers significant improvements in installation efficiency.

Only two horizontal single-tube square channels are required for reinforcement in the wall tie system. On average, the total steel pipe requirement for a project is around 3.5 tons.

Compared with the traditional tie-rod system, which requires four horizontal double-pipe walers and additional vertical reinforcements, the wall tie system reduces steel usage by more than 70%. This reduction lowers the labor intensity for installation, removal, and transportation, resulting in faster construction cycles.

For horizontal reinforcement fastening, the system uses waler brackets and wedges. Workers simply secure the wedge by lightly striking it with a hammer. Unlike the tie-rod system, there is no need for time-consuming nut tightening or repeated checks, making the installation process simpler, faster, and more efficient.

Cost Saving

The wall tie system also provides clear material and labor cost advantages.

For example, in a project with a formwork area of 2000 m² across 30 floors, the wall tie system can significantly reduce the required quantity of steel pipes, connectors, and installation labor compared to the conventional tie-rod system.

By lowering material consumption, reducing installation time, and improving construction efficiency, the Mitro Industries Aluminum Formwork Wall Tie System helps contractors achieve substantial overall cost savings while maintaining high construction quality.