Weight of Aerated Concrete in 1 m³: Bulk and Specific Weight

Aerated concrete is a porous building material made from cement, sand, lime, water and a gas-forming additive. Thanks to its cellular structure, aerated concrete has low weight, good thermal insulation, does not rot, does not rust and is classified as non-combustible. At the same time, it can absorb moisture, so exterior aerated concrete walls are usually protected by finishing layers or suitable construction details.

Popular aerated concrete block sizes: 200x200x600, 250x200x600, 280x200x600, 300x200x600, 360x200x600, 400x200x600, 500x200x600, 75x200x600, 100x200x600, 120x200x600, 150x200x600 mm.

In construction, one of the first values calculated is how much aerated concrete weighs, that is, the mass of 1 m³ of material. In articles like this, the terms “bulk weight”, “specific weight” and “density” are often used as close practical names for the mass of material per unit volume. For aerated concrete, it is important to remember that the D grade indicates the average dry density of the block including its porous structure: for example, D500 corresponds to about 500 kg/m³.

For the calculation, it is necessary to find out how many blocks are in one cubic meter of aerated concrete. This is done using the volume formula: height, width and length of the block are multiplied. Let us consider an example of an aerated concrete block with the following parameters: height - 250 mm, width - 400 mm, length - 625 mm. Converting these parameters into meters gives 0,25; 0,4 and 0,625 m. Now, to calculate the volume of one block, we multiply the parameters and get 0,0625 m³. Knowing this value, we can calculate the number of blocks by dividing one by the volume of one block. As a result, we get 16, meaning that one cubic meter contains exactly this number of blocks.

Determining the Specific Weight of Aerated Concrete by Grade, Density and Block Size

To calculate the weight of one cubic meter of aerated concrete, it is necessary to multiply the block volume calculated above, the block density and the number of blocks. Density is indicated by the material grade. For example, a D500 block has a density of 500 kg/m³, while D900 has 900 kg/m³.

Returning to our example, let us calculate the weight of one block. For the example, take grade D500 density: multiply 500 by 0,0625 and get the weight of one aerated concrete block, which is 31,25 kg. Then multiply by the number of blocks: 31,25x16, and get the weight of 1 m³ of aerated concrete, 500 kg.