Cement mix for the foundation

Cement is of course used for casting foundations. The cement is mixed as concrete. What has to be considered when mixing cement for a foundation, we have summarized in this guide for you.

Limitations when making foundations

First of all, it must be clear to you that as a rule you can only make smaller foundations yourself, if you want to mix cement yourself. Because the machines that are available to you for mixing the cement, are not enough to cast really high quality foundations, for example, as a floor plate for a house itself.

For this purpose, the concrete recipe must comply with the relevant standards and is produced in the concrete plant and then delivered as driving concrete. The foundations that you can cast yourself, on the other hand, consist of construction site or in-situ concrete, which has lower properties, for example in terms of tensile and compressive strength. The foundations, which you can mix and pour yourself from cement, differ:

  • surface foundation
  • strip foundation
  • point foundation

You can read more about the different types of foundation here.

Run the foundation frost-proof

There is also another very important aspect. Namely the frost-proof casting of concrete foundations. Pay particular attention to the creation of a gravel layer for drainage, and that the foundation is installed deep enough (frost-proof).

Mix cement: the tools and tools

When mixing cement, you usually have the following tools to choose from, which also depends on what quantities of cement you can process:

  • Mortar trough: small quantities
  • Concrete burr: small quantities
  • Concrete mixer: medium quantities

Large mixers, such as those used by tractors, were not taken into consideration.

The mixing ratio cement, mixing water and aggregate

When mixing cement, the mixing ratio is especially important. For the usual in-situ concrete usually the mixing ratio 4: 1 is used. On one part cement come four parts supplement (gravel and sand) as well as half a part water. The amount of mixing water always equals about half the amount of cement.

When using different aggregates

Important is the grain size at surcharge. With a grain size of a maximum of 4 mm, so sand as a supplement, it is mortar. With a larger grain size, the mixed cement is called concrete. Important here is the ratio of the different grains to each other.

The grain sizes must be selected so that the well-mixed aggregate hardly has any gaps between the individual material components. In other words: the cement in the interstices should be as small as possible, but filling out. The contract ultimately also serves to save cement.

Tips & Tricks

Order the cement as soon as possible at the time of processing. In addition, you should never order too much cement. Because the storage of cement is not only problematic because of curing.

Video Board: Foundation Concrete Pouring Process - Use Stone And Sand Mix And Cement