Concrete is quite a complex subject. There are various different types and grades of concrete (usually strength related), and there are various ways that concrete can be delivered to you.
• Ready mix delivered by an aggravator
• Volumetric Concrete ( mixed on site)
• Hand mixed ( mix it yourself )
Readymix Concrete: Probably the most common way to have your concrete delivered. You will have seen these lorries with huge barrels rotating, this is called an aggravator. The concrete is mixed continually from the batching plant to your site
These trucks usually carry around 8 cubic metres of concrete and will usually need to be washed out on site.
Most larger companies operate with these types of lorry, as it seems to the fastest way to deliver the required building materials.
Volumetric Concrete:delivery differs slightly to ready mix because the materials arrive on site unmixed. The advantage of this is that you can mix the exact amount you need without over or under ordering this eliminates h having any excess concrete left over. This can be done because the materials are kept in separate compartments; these are then mixed with clean cement to form your base concrete.
Typical volumetric lorries can deliver between 2 and 10 cubic metres of material.