Can you use galvanised mesh for concrete?

Construction material

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A building worker is spraying shotcrete on welded wire mesh

Welded wire mesh, or welded wire fabric, or "weldmesh" is an electric fusion welded prefabricated joined grid consisting of a series of parallel longitudinal wires with accurate spacing welded to cross wires at the required spacing.

Machines are used to produce the mesh with precise dimensional control. The product can result in considerable savings in time, labour and money.

Uses of welded wire mesh

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The welded wire mesh is a metal wire screen that is made up of low carbon steel wire or stainless steel wire. It is available in various sizes and shapes. It is widely used in agricultural, industrial, transportation, horticultural and food procuring sectors. It is also used in mines, gardening, machine protection and other decorations.

Weld mesh is the term given to the kind of barrier fencing that is manufactured in square, rectangular or rhombus mesh from steel wire, welded at each intersection.

Welded wire fabric (WWF) is also sometimes used in reinforced concrete, notably for slabs.

Types of welded wire mesh

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There are several types of welded wire mesh which can be categorized according to their structure, use, and characteristics.

Welded wire fabric (WWF) for concrete slab reinforcement

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This type of mesh is a square grid of uniformly placed wires, welded at all intersections, and meeting the requirements of ASTM A185 and A497 or other standards.[1] The sizes are specified by combining the spacing, in inches or mm, and the wire cross section area in hundredths of square inches or mm2. The common sizes are in the following table:

Imperial Size Metric Equivalent Weight Imperial Weight Metric 6x6 W1.4/W1.4 152x152 MW9.1/MW9.1 20 lb/100 sf 0.98 kg/m2 6x6 W2.1/W2.1 152x152 MW13.1/MW13.1 30 lb/100 sf 1.47 kg/m2 6x6 W2.9/W2.9 152x152 MW18.7/MW18.7 41 lb/100 sf 1.99 kg/m2 6x6 W4.0/W4.0 152x152 MW25.8/MW25.8 56 lb/100 sf 2.73 kg/m2 6x6 W5.4/W5.4 152x152 MW34.9/MW34.9 76 lb/100 sf 3.72 kg/m2 4x4 W1.4/W1.4 102x102 MW9.1/MW9.1 30 lb/100 sf 1.46 kg/m2 4x4 W2.1/W2.1 102x102 MW13.3/MW13.3 43 lb/100 sf 2.40 kg/m2 4x4 W2.9/W2.9 102x102 MW18.7/MW18.7 61 lb/100 sf 2.96 kg/m2 4x4 W4.0/W4.0 102x102 MW25.8/MW25.8 83 lb/100 sf 4.06 kg/m2 4x4 W5.4/W5.4 102x102 MW34.9/MW34.9 119 lb/100 sf 5.82 kg/m2

Electro galvanized welded wire mesh with square opening

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This type of welded wire mesh is designed for building fencing and in other infrastructural purposes. It is a corrosion resistant wire mesh that is largely used in structural building. It is also available in different forms like rolls and panels for industrial uses.

Hot dipped galvanized welded mesh

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This type of mesh wire is generally made up of plain steel wire. At the time of processing it goes through a hot zinc covering process. This type of welded mesh ware with square opening is ideal for animal cage structuring, fabricating the wire boxes, grilling, partition making, grating purposes and machine protection fencing.

PVC coated welded mesh

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PVC coated welded mesh with plastic covering is constructed with galvanized iron wire of high quality. It has PVC powder covering that is processed by an automatic machine. The smooth plastic coating on this corrosion protective wire is attached with a strong adhesive which make increases durability of the wire. It is used in fencing residential and official properties like gardens, parks, building etc. The PVC coated welded mesh which is available as both rolls and panels, is also available in different colors like white, black, green etc.

Welded stainless steel mesh

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This kind of welded mesh wire is basically used in industrial fencing purposes. It is made up of stainless steel that has high strength and integrity. This corrosion resistance meshed wire is long lasting and is widely used in transportation, agricultural, mining, horticulture, entertainment and other service sectors.

Welded wire fencing

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Contact us to discuss your requirements of galvanized concrete reinforcing mesh. Our experienced sales team can help you identify the options that best suit your needs.

This is a type of meshed wire that is available in rolls or panel for used for fencing. Also referred to as "weldmesh", it is available with or without galvanization. The non-galvanized version comes for a lower cost.

Welded steel bar gratings

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This type of welded mesh wire provides advantages like high strength, easy installation and feasible cost. It is mostly used for grating roads, making drainage coverings and building safety walls. It also has uses in chemical plantation, platform grating, metallurgy etc.

References

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   Frederic S. Merritt, M. Kent Loftin, Jonathan T. Ricketts, Standard Handbook for Civil Engineers, Fourth Edition, McGraw-Hill Book Company, , Page 8.17

Whether you&#;re building a new building or repairing an existing highway, you want to guarantee your customers structures will stand the test of time. You want to provide a finished project that is not only durable, but also able to age well visually. When those are the goals you have in mind for any construction, hot-dipped galvanized materials are today&#;s most popular choice.

One galvanized material we are asked about often is hot-dipped galvanized wire mesh. So, we&#;re tackling all your most common questions in one place. From the basics about what projects wire mesh is used for to concerns about its longevity, we cover it all.

What is Galvanized Wire Mesh Used For?

Hot-dipped galvanized wire mesh or hot-dip galvanized welded wire mats are used for similar purposes as galvanized rebar rods. It acts as a strengthening and stabilizing skeleton within a concrete structure. It can also be used for external purposes such as wire fencing, especially in the agricultural space. 

In both construction projects and agricultural environments, it is a popular choice because of its resistance to rust and its durability. Galvanized wire mesh, like other galvanized materials, has self-healing properties because of the zinc coating. This means that minor scratches to the surface do not compromise the integrity of the material. 

Its ability to withstand small surface scratches and still heal is what makes galvanized wire mesh a great choice for all types of construction projects exposed to natural elements that could cause small scratches or corrosion to happen over time. This ability to handle minor wear and tear well also makes it a safer investment for construction projects, as there will be no time or money lost.

When is Galvanized Wire Mesh a Good Choice, and Why?

As is clear from the above, this wire mesh is a versatile building material. Unlike regular wire mats, it can withstand extreme elements while maintaining its strength and its silver appearance. Those are the main reasons it works for projects exposed to harsh environments, but let&#;s look closer at why it is such a popular option for use within other materials.

Within concrete, galvanized wire mesh does more than form and support the structure. It actually strengthens it! This is because the zinc coating forms a chemical bond with the concrete around it. Zinc molecules enter the concrete, strengthening not only the bond between the wire and the concrete, but also strengthening the concrete itself. 

Additionally, galvanized wire mats can be used with other galvanized materials such as galvanized rebar rods, making for a complete galvanized structure.

Does Galvanized Wire Mesh Rust?

The biggest reason to use galvanized wire mesh instead of regular mesh is because it does not rust. The self-healing properties we mentioned earlier mean that the mesh literally protects itself from corrosion.

When the zinc coating comes into contact with water, it reacts by building up extra protection for itself. This protection increases its rust and corrosion resistance. This positive chain reaction also means that a scratch in one area does not become the beginning of an entire section of mesh being compromised. Because the damage is stopped before it starts, the structure remains intact and not affected by the small amount of water that may touch the scratched area.

This positive chain reaction occurs whether the mesh is within concrete or standing on its own. It is the zinc itself that creates this reaction, not the bond to the concrete. So, even exposed galvanized rebar or mesh would benefit from the same reaction. That&#;s something that regular or epoxy-coated rebar and mesh can&#;t do.

How is Galvanized Wire Mesh Sold?

Galvanized wire mesh can be bought both in rolls and in sheets, or mats. There are various sizes, which describe how large the squares forming the mat are. Which style of mesh and which size is best for you will depend on the nature of your project.

South Atlantic Has the Galvanized Materials You Need, In Every Size for Every Budget

We at South Atlantic sell galvanized wire mesh in various sizes, along with galvanized rebar rods and other galvanized materials. Our sales teams have years of experience working with builders and project managers and can help you order the exact combination of materials you need for your build or project. You can learn more about our galvanized wire mesh and rebar here.

Are There Examples of Galvanized Wire Mesh in Action?

Yes, in fact, galvanized wire mesh is part of one of the most recognizable structures in the world: The Sydney Opera House. The International Zinc Association shares this about the construction of the Opera House on their website.

&#;The sails of the Opera House are made of pre-cast rib segments, some weighing up to 15 tons each. Galvanized mesh was exclusively used in the manufacture of these precast segments to provide long-term corrosion protection and to minimize the risk of cracking and rust staining of the gleaming white ceramic cladding tiles.

After nearly 40 years exposure to salt spray and high humidity, the sail panels have shown no signs of deterioration though other concrete elements in this massive structure which were black steel reinforced have needed significant rehabilitation.&#;

The Sydney Opera House is one powerful example of a project that chose galvanized wire mesh to protect both the integrity and the aesthetics of the end result. When the right materials are used from the beginning, the investment continues to prove its worth with every passing year.

Over 50 Years of Experience Serving Builders and Project Managers Across the Southeastern US

Whether you are building a structure meant to inspire future generations or simply looking for a durable building material for your next project, galvanized wire mesh is a great option. If you have more questions about this material or need help deciding which size and type are right for your project, you can reach out to our team through our contact form here: southatlanticllc.com/galvanized-steel/contact.

As a premier galvanizing company that has served the Southeastern US for over fifty years, we know how stressful project deadlines are and how tight budgets can get. That is why we are proud to handle every step of the fulfillment process for you. All you have to do is call or contact us to place your order, then we take it from there. From our competitive pricing and large stock of galvanized materials to our internal management of the delivery, you can rest assured you&#;ll have what you need when promised, for the price you were originally expecting.

We&#;ve got you covered, every step of the way.

The company is the world’s best welded wire mesh for concrete supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.