Concrete blocks - many practical formats


The gas concrete block has become so popular for several reasons. One of them is certainly the variety of different sizes that provide the right stone for every purpose. The gas concrete block is always relatively lightweight and robust.

Mineral building material for many occasions

Cement mortar or lime and lime cement are made porous in a gas concrete block by puffing. The same principle as popcorn leads here to a highly porous yet resilient and lightweight stone, which can also be easily processed by laymen.

Of course, the stone then has to undergo a steam cure to obtain the appropriate strength. Subsequently, the gas concrete block can be divided into four different strength classes. These are subtly differentiated in color in some places on a stone pallet.

  • green strength class 2
  • blue strength class 4
  • red strength class 6
  • black strength class 8

Concrete or aerated concrete

Aerated concrete and aerated concrete have nothing to do with concrete. This name is actually a bit misleading. Therefore, the builder must orientate himself to the strength classes given for the particular stone to meet the static requirements.

Concrete blocks formats and sizes

The very common concrete aerated concrete block is available, for example, in length 62.5 with a height of 25 centimeters and thicknesses 5 / 7.5 / 10/12/15/20/25/30 centimeters. This really provides the right strength for every purpose.

Thermoblock of aerated concrete

The thermoblock made of the lightweight Poroton material has particularly good thermal insulation properties. So can be partially dispensed with an additional insulation when the outer walls are built with the thermal blocks.

For interior walls, however, the stones with the good insulating effect are too good and then usually too wide and too expensive.

  • Lengths 62.5 / 50 centimeters
  • Widths 30/40/50 centimeters
  • Height 20 centimeters

Tips & Tricks

For example, if you want to wall a door opening, a narrow five-centimeter thick aerated concrete block will do just fine. For load-bearing walls, however, you should seek the advice of a structural engineer or architect, as a layman should not do these calculations in good luck.


Video Board: Compressive Strength of Cement Concrete Cubes