Abstract
The ecological safety of the use of nepheline sludge in the construction of the lower foundations of pavements is shown. Using electron microscopy and chemical analysis, the area of influence of nepheline sludge used in the construction of road pavements on the roadside soil, which is limited by a distance of 10 m, was determined. Studies have been carried out on ecotoxicity using monocotyledonous and dicotyledonous plants and soil infusories of the genus Colpoda steinii. results, which confirmed the possibility of using nepheline sludge as a component of pavement in the form of nepheline-crushed stone mixture. Keywords: NEPHELINE SLAM, PAVEMENT MATERIAL, ECOLOGY, TOXICITY, ENVIRONMENTAL SAFETY
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