Composition of cement-sand mixtures

The basis of all the foundations in modern construction is cement. In a mixture with sand, gravel and water, it forms concrete. And it's not necessary to tell about its meaning. The use of concrete began in ancient Rome, and until today the technology of its production has gone to such distances that even its transparent varieties became a reality.

Since then little has changed, so is the technology of production and the composition of cement-sand mixtures. To start the construction of at least a small shed in your dacha, you need to know a little more about this.

What are they used for?

Cement-sand mixtures (DSP) are used for concreting walls and floors, laying works, for grouting joints, laying tiles, etc. In the original version used compounds, which were only sand and cement.

Modern alternatives

Today we can not find the simplest cement-sand mixtures. Thanks to special plasticizers, you can give the composition any property that you need.

So, really increase the adhesive properties, accelerate or slow down the solidification of the composition, and also give it fire resistance or resistance to the corrosive action of sea water. If a mixture is made of dry plaster cement-sand, then the composition may include lime. This is done to better adhere it to the surface.

And now we'll figure out which varieties of mixtures are most often used in modern construction.

Variety M-100

This type of cement-sand mixtures is intended exclusively for plastering both internal and external surfaces. It includes lime, cement grade PTS400, as well as high-quality washed and sieved river sand. For every ten kilograms of concentrate, two liters of water are taken.

Type M-150

At the moment, this type of cement-sand mixtures is the most common, widely used for repair and decoration works.

Suitable for shpatlevaniya and plastering. Such a wide range of works is due to the fact that builders change the density of the mixture, adding or removing buffer substances and plasticizers. Therefore, there are simply no specific requirements for its dilution.

Mixture universal M-200

As well as the variant considered earlier, this compound can be applied in several varieties.

• Type for installation and masonry. Most often used for the construction of walls of brick or concrete.
• Universal variety: you can conduct both masonry and plastering works.
• Of course, there is a specialized mixture of plaster cement-sand.

If you need any particular version, be sure to read the information that the manufacturer must indicate on the package label. From the correct selection of the mixture depends not only the simplicity and efficiency of the work, but also the strength of the resulting structure.

Composition of M-300

Specialized species used in the construction of critical buildings. Used for pouring high-strength screeds and manufacturing floors, which will have a huge load. The composition includes portland cement, river sand with a particle size of strictly more than 2 mm, as well as sand with a particle size of 6 mm.