When mixing concrete it is vital to ensure that you get the correct ratios to ensure the concrete strength and finish you require for your job.

There are many factors to consider to ensure that you use the right mix for your projects. These will include srength requirements, your size and type of aggregate and even the weather. If you are looking to use mix on site concrete then we will look at how to help you understand the perfect concrete mix ratios and how you can ensure that you get the right ratio mix for your needs.

Firstly lets look at what mixed on site concrete actually is. It is concrete that is mixed on the site of the job rather than being delivered ready mixed. It is used when it is not possible to have ready mixed concrete broight to site or where mixes need to be adjusted as required for different aspects of the conctruction project.

In simple terms a concrete mix is the componants that go into making the concrete and the ratio is the amount of each componant that needs to be used.This will include cement, sand and aggregates.

So what is a basic concrete mix ratio –

A basic concrete mix ratio is the cement, water and aggregates which could be sand, gravel or stone. They are usualy written out in numbers such as 1:2:3 which is one part cement, two sand and 3 gravel.

Different projects will require different mixes depending on the use. The mix ratios will be read as the first number being the amount of cement, thr second number is the sand and the third is the aggregate.

When working in construction looking for the perfect concrete ratio mix it is useful to follow these simple calculations below;

  • 1:1.5:3 for general-purpose use
  • 1:2:4 for foundations and retaining walls
  • 1:3:6 for floor slabs and footings

You will need to consider the strength of the concrete, the type of aggregate used and the climate when perfecring the ratio mix of concrete.

If you have a requirement for concrete our experts at Allmix can help you with knowing what to use for the perfect mix for your concrete contact our experts today for more information.