The SM 0/40/70 mixture is the result of complete processing of stabilized ash that has been kept in the ash pit under a layer of water for a long time by drying and further separation at a modern production complex using advanced technology. The separation technology was developed with the participation of the Gas Institute of the National Academy of Sciences of Ukraine based on computer modeling of the process and calculation of the behavior of small particles in the air flow. This is a very effective fractionation method that produces the highest quality raw material processing results. That is why our mineral mixture SM 0/40/70 is not an ordinary untreated fly ash from thermal power plant filters, but a high-quality additive - a filler for cement.

The main differences of SM 0/40/70 and its advantages over filter ash are as follows:
1. The SM 0/40/70 mixture has a much lower content of unburned carbon ("mechanical underburning").
For our product, this is a maximum of 2...3%. The DSTU limit is no more than 5%. The ash removal from filters is usually 5%...7%.
Unburned carbon (carbon) is a very undesirable impurity that worsens the properties and characteristics of concrete, reduces the resistance of reinforcement, and also spoils the appearance of concrete (black oily spots appear).
2. Due to the long exposure in the wet state, the raw material does not contain unburned lime and magnesium oxide, which are present in fresh ash from filters and can cause uneven volume changes in concrete and mortars.
3. Our product is more homogeneous and finer. The main fraction of the SM 0/40/70 mixture is characterized by a residue on a 45 micron sieve of slightly more than 12%. We also distinguish a fraction that completely passes through the 45-micron sieve.

The introduction of SM 0/40/70 mixture into concrete (foam concrete, aerated concrete) in the amount of 15...25% by weight of cement leads to an improvement in the whole set of properties of the concrete mix and finished concrete. Due to the spherical shape of the particles, the mixture works as a "mineral plasticizer", reducing the water requirement of the concrete mix, which reduces cement consumption and reduces the cost of concrete.
Due to the particle size of 40...70 microns(in the absence of carbon), SM 0/40/70 effectively fills the pores between larger aggregates (sand and gravel), which increases the density of concrete, which improves its durability and performance characteristics (frost resistance, water resistance, corrosion resistance).
SM 0/40/70 also has hydraulic activity. Over time, the mixture reacts with lime formed during the cement hardening process and forms new compounds with it, which fill the pores and further strengthen the concrete.
SM 0/40/70 mixtures not only improve the properties of concrete and mortars, but also reduce the consumption of cement (usually by 10...15%) and expensive additives while maintaining their properties. Concrete products with the addition of SM 0/40/70 mixture are best reinforced with basalt reinforcement (no mutual negative impact).