Wire mesh, also known as wire fabric or wire netting, is a versatile material consisting of interconnected wires arranged in a grid pattern.
Definition:
Wire mesh, also known as wire fabric or wire netting, is a versatile material consisting of interconnected wires arranged in a grid pattern. In tunneling and underground structures, wire mesh is commonly used as reinforcement, support, and protection for various construction elements.
Uses/benefits:
Wire mesh has a wide range of uses and benefits, including:
1. Reinforcement: Wire mesh provides structural reinforcement to concrete and shotcrete applications, improving the tensile strength and overall stability of the structure.
2. Ground stabilization: Wire mesh can be installed to stabilize the surrounding soil or rock mass, preventing ground movement and enhancing the stability of underground structures.
3. Surface protection: Wire mesh can be used to protect the surface of tunnel linings, shotcrete, or rock slopes from erosion, rockfall, or impact damage.
4. Safety: Wire mesh can act as a safety barrier, preventing loose debris or rocks from falling onto workers or equipment in underground construction sites.
5. Ventilation control: Wire mesh with specific patterns or openings can be used to regulate airflow and control ventilation in tunneling and underground structures.
Specifications:
Wire mesh can be specified based on various factors, including:
1. Material: Wire mesh is typically made from various materials, including steel, stainless steel, galvanized steel, or synthetic fibers such as fiberglass or plastic-coated wire. The selection of material depends on factors such as project requirements, environmental conditions, and desired durability.
2. Wire diameter: The diameter of the wires used in wire mesh can vary depending on the intended application and the required strength. Thicker wires provide greater strength and durability.
3. Mesh size: The mesh size refers to the spacing between the wires and determines the size of the openings in the mesh. It is selected based on the specific needs of the project, such as the desired level of reinforcement, protection, or airflow control.
4. Tensile strength: The tensile strength of wire mesh is an important specification that indicates its ability to resist deformation or breakage under applied loads. It is typically expressed in terms of the wire's yield strength or ultimate tensile strength.
Types:
There are various types of wire mesh available, designed for specific applications and environments. Some common types include:
1. Welded Wire Mesh: Made by welding intersecting wires at their contact points, resulting in a strong and rigid mesh.
2. Woven Wire Mesh: Created by weaving wires together in an over-and-under pattern, producing a flexible and versatile mesh.
3. Expanded Metal Mesh: Produced by cutting and stretching a metal sheet, creating diamond-shaped openings with interconnected strands.
4. Perforated Metal Mesh: Made by punching holes in a metal sheet, allowing for controlled filtration or screening properties.
5. Knitted Wire Mesh: Constructed by knitting wires together to form an interlocking pattern, often used for filtration and gasketing applications.