ORTHOGONAL EXPERIMENTAL STUDIES ON PREPARATION OF MINE-FILLING MATERIALS FROM CARBIDE SLAG, GRANULATED BLAST-FURNACE SLAG, FLY ASH, AND FLUE-GAS DESULPHURISATION GYPSUM

Environmentally friendly and cheap composite green cementitious materials have been prepared from carbide slag, fly ash, flue-gas desulphurisation (FGD) gypsum, and granulated blast-furnace slag (GBFS) without using cement clinker.Orthogonal testing was used to investigate the effects of the raw materials on the amount of water required for reachin

The handicraft industry remained an integral part of the mixed economy of the Russian Empire.Foreign artisans, primarily those of German descent, played a significant role in the capital cities from the 18th century onward.Most of these craftsmen relocated to Russia in response to an invitation from the Tsarist government.Around the turn of the 18t