Sofia University "St. Kliment Ohridski"

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New Technology for Bricks and Blocks Production Based on Clay and Admixtures

The newly developed technology is proposed by a team of researchers working at Sofia University “St. Kliment Ohridski”, University of Chemical Technology and Metallurgy and Bulgarian Academy of Sciences. The technology is based on fine grained sandy or sandy-silty soils with moderate content of clayey substance and low quantity of organic matter with lime and gypsum as admixtures. The strength of the products increases with the amount of the silica gel, formed by the interaction of the clay minerals with lime, and the formation of ettringite.

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