Hazır qarışıq betonda uçan külün faydaları
ilə: septech_admin | Posted: Fly Ash | Cümə, Jul 3, 2020 - 6:52amFly ash is the most mineral residue left over from burning coal by coal-fired power plants. Fly kül pozzolanicdir, meaning that it has cementitious properties. It is valuable for
Daha çox oxu