Reducing the environmental impact of mining production through the use of man-made waste

Abstract

The admissibility of replacing traditional cement, used as a binder with magnesium-containing man-made waste in the preparation of a construction and fill mixture is justified. The possibility of replacing the traditional specially mined aggregate in construction and fill mixtures is proved. The results of testing samples after cementing and a construction-fill mixture prepared on the basis of man-made waste are presented. The positive effect of mechanical activation of the backfill mixture components on its rheological properties and strength characteristics of the fill mass is studied. The use of lignosulfonate as an additive was confirmed to improve the binding and rheological properties of the backfill mixture. The involvement of man-made waste in the closed cycle of the main and auxiliary production reduces the volume of man-made massifs, which significantly reduces the impact of mining production on the environment.

Cement Stabilization of Waste from Contaminated Soils in Terms of Its Installation into Engineered Landfill

“…Mining and industrial waste can differ greatly in its reusability, depending on its type (e.g., coal-associated shale, ash, and slag for building embankments, steel for re-smelting and petroleum contaminated soils) or its adverse impact on the environment (waste from nuclear power plants or chemical plants). For the latter, its disposal most commonly involves sealing it in special containment sites (sarcophagi) that protect the environment from the waste's harmful effects [7]. Such sites can be located underground [7] or aboveground [8,9].…”

“…For the latter, its disposal most commonly involves sealing it in special containment sites (sarcophagi) that protect the environment from the waste's harmful effects [7]. Such sites can be located underground [7] or aboveground [8,9]. The crucial issue concerning aboveground storage facilities is the protection of groundwaters [10][11][12].…”