Kostirnir við Fly Ash í Ready-Mix steypu
Eftir: septech_admin | Bókað í: Fly Ash | Föstudagur, Jul 3, 2020 - 6:52ErFly ash is the most mineral residue left over from burning coal by coal-fired power plants. Fljúgandi aska er pozzolanic, meaning that it has cementitious properties. It is valuable for
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