This is aerated concrete, have you seen such material? It is quite popular in Russia. Several times cheaper than brick. This material seems to be a modern one but in fact it started to be produced back in the USSR, in the 1930s. Aerated concrete is modern energy-saving material used in individual
construction. The main thing about it is that anyone can build a house using foamed concrete without any help. The photos below were taken at Ytong factory in Mozhaisk city that started functioning in 2008. This is the largest factory producing aerated concrete in Russia.