Differences Between Dry Cast Paver Moulds & Wet Cast Paver Moulds

Now while residents are more concerned about the aesthetic design of the concrete pavers, it is equally important to know the construction design of the pavers. By making sure that the paver is suitable for the job, this will also ensure the overall longevity of the projects lifetime. 

There are several differences when it comes to moulds. Let’s take a look at 2 of the most common and effective kinds of paver moulds. Wet cast pavers and Dry cast pavers.

How are the Wet cast pavers & Dry cast pavers made?

The primary difference between wet cast & dry cast pavers can be seen through its manufacturing process. 

Dry Cast Pavers 

In the case of dry cast pavers, only a small amount of water is used in the concrete mix. Like wet cast pavers, dry cast paver mixes are similarly placed into a mould and are then compressed with very high pressure using complex machinery. These compressed moulds are then cured on racks before being palletized. Since these kinds of pavers are air-cured they can be produced quickly and affordably.

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Wet Cast Pavers

Just like the name, the concrete used to manufacture wet cast pavers is actually more liquid-based. It has a high slump which gives it the ability to be poured from a mixer or truck. 

What is a slump?

Slump is a relative measurement in terms of concrete consistency, a slump test is usually conducted in order to measure the workability of a mix. The test involves filling a slump cone with concrete then carefully removing the cone and later measuring how much the concrete slumps from the height of the cone.

Mixing machines called concrete batch plants are used to combine pre-determined quantities of sand and coarse aggregate with the exact weight of the cement.

Additives are later added to speed up hydration, release agent, colourants, black & white efflorescence inhibitors as well as strengthening fibres.

The concrete mix is later poured into a flexible shaped mould for the paver and then levelled off.

A vibratory process is then used to settle the concrete, filling small voids and then forcing any small air pockets to be expelled through the open top surface.

Once the concrete has been cured, the mould is removed and the pavers are palletized and are ready to be sent for shipping. Also, the curing process for wet cast pavers is quite longer than a dry cast paver thereby making it more labour-intensive to produce. 

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How do Wet cast pavers & Dry cast pavers differ in terms of colour, strength & Protection

Color and Finish

Wet cast pavers usually feature colour tones that are more bold. They are smoother and have more intricate surfaces and can better imitate natural stone in their appearance. 

Dry cast pavers, on the other hand, have traditionally been more simplistic and are usually basic in colour and texture. Likewise, modern manufacturing techniques have made colour blends and surface textures more desirable.

Protection & Maintenance

After deciding the kind of pavers that you’re going to be using for your project, you need to ensure that it stays safe and protected from seasonal changes. In the case of both dry and wet cast pavers, they should be sealed to prevent possible staining, chemical deterioration from any acids pr salts and colour fading from use over a period of time.

Strength 

Both wet and dry cast pavers can be used for residential projects like driveways, walkways and patios.

Benefits of using Dry Cast Paving

  • Dry Cast pavers can be extremely durable and are more suitable for areas with high traffic.
  • They are more precise dimensional wise making it easy and quick to install.
  • They come in a wide variety of shapes and sizes for a wide variety of paving applications.rubber paver mould manufacturers

Benefits of using Wet cast Pavers

  • Wet cast pavers can be visually more appealing and also serve as an alternative solution to concrete brick paving.
  • Wet cast paving also has the advantage for providing a variety of paving shapes, textures and sizes.
  • The more diverse kinds of wet-casting paving moulds offer a practical paving option while simultaneously obtaining the natural look of the stone.
  • Wet cast pavers are more suitable for residential projects

If you’re looking for the right place that offers concrete paver moulds for wet cast pavers/ tiles, then you get the same from JR Rubber Industries. They provide all the complete solutions for exterior flooring industry with the manufacture and supply of rubber moulds for paver blocks

The supply of paver machinery, setting chemicals and colour oxides and complete technical assistance for concrete pavers production that features in-plant training and onsite assistance for production.

They offer a wide range of products like Rubber moulds for Pavers/Tiles/Kerbs/Cover, Blocks, polypropylene Plastic Moulds Pavers and other customized products. They also offer paver production lines like Mini paver plant, semi-mechanized paver plant and fully automatic paver plants.

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Rubber Moulds Vs Silicone Moulds – How to Choose According to Your Needs

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Are you in the planning stages of your paving blocks project? Do you need to decide which mould, rubber or silicone mould is more suitable for your process?

We often have customers requesting silicone moulds. While we do not produce silicone moulds, our paving moulds produce an equivalent quality of cast concrete products while keeping cost well below the cost of comparable silicone moulds.

More and more homeowners, do-it-yourselfers, builders, and landscapers are making their own manufactured stones today. You can now make stones, tiles, bricks, and pavers for a fraction of what you’ve been buying them for, thanks to companies that manufacture and market concrete molds directly to consumers and tradespeople through the Internet.

Now you can make these building products right in your garage, basement, for a shed for pennies each!

Each option has its own advantages and disadvantages. The advantage to JR Rubbers’ proprietary blend of materials is that you get a commercial grade mould designed to be used hundreds if not thousands of times.

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Our moulds are very robust in design and do not require the use of a release agent while most mould manufacturers recommend using a release agent. The lack of need for release agents also provides additional cost savings from both a material standpoint as well as a reduction in labor cost.

Rubber moulds work very effectively and are the “go-to” option for casting concrete pavers. In some cases, a release agent is not required when casting concrete in these moulds, but it depends greatly on the components of the concrete mix.

Using silicone rubbers may take away the need for release agents (which have the potential to affect the model); however, the oils from silicone rubbers also have the potential to affect the model in some way.

Platinum silicone mould rubbers can be appealing because of their great release properties (tin-cured silicones should not be considered for concrete as they shrink over time and deteriorate with age), but overall, we find that the advantages of rubber mould outweigh the advantages of silicone rubber for this paving block manufacturing application.

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In addition to robustness and cost savings, our moulds provide excellent texture and general appearance as would be expected from an equivalent silicone mould. We stand behind our product 100%. You can be assured that our moulds meet or exceed the requirements of the industry.

Efflorescence, which produces salt deposits on the surface of concrete, more often occurs when silicone rubber moulds are used for casting (in comparison to rubber moulds).

This white residue is aesthetically displeasing and to remove it, you may need to use solvents or other chemicals.

In line with this, the overall color quality of the cast parts seem to differ depending on the mould material; concrete cast in rubber moulds tend to display more vivid color, where colors may appear muted when casting in silicone rubber moulds.

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Silicone rubber moulds cost about twice as much as that of rubber moulds. This is because, by weight, it would require more silicone rubber than polyurethane rubber to create the same mould since silicone is denser.

Cured polyurethane rubbers exhibit physical properties that are generally “tougher” than silicones, so they are more resilient to wear and tear when moulds are used repeatedly for years.

Here at JR Rubbers, we often recommend the use of rubber to make moulds for concrete casting (e.g., concrete tiles, panels, pavers, bricks, countertops, edging, etc.). Established in 1993, we have been manufacturing moulds for wet cast concrete pavers/tiles, providing the complete solution for exterior flooring industry with the manufacture and the supply of moulds, paver machinery, setting chemicals and color oxides and complete technical assistance for paver production with in-plant training and onsite assistance for production.

Our range of products includes rubber moulds for Pavers/Tiles/Kerbs/Cover Blocks, polypropylene plastic paver moulds, mini paver plant, semi-mechanized paver plant, fully automatic paver plant and other customized products,

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