The article covers the importance of environmental assessments of building materials. Magnesium binding materials were selected as the subject of the environmental analysis. The water resistance of these materials is regarded as one of environmental criteria. Thus, the purpose of this paper is an assessment of the life cycle of additives proposed to improve the water resistance of magnesium binding materials. Redispersible polymer powder based on the copolymer of vinyl acetate and vinilversatata, polyvinyl acetate dispersion, sodium carboxymethyl cellulose, oxalic acid, chrysotile asbestos, modified using concentrated sulfuric acid and micro-silica were selected for research purposes.The following findings have been generated in the course of the research:1. Correlation between the environmental assessment of the application of modifiers with the strength test results of caustic magnesite samples in dry and saturated states is identified.2. Organic additives classified as producing an unsatisfactory environmental impact do not significantly affect the water resistance of the caustic magnesite sample.3. Oxalic acid, chrysotile asbestos modified using sulfuric acid and micro-silica are acceptable for magnesium binding materials in terms of their environmental analysis.4. Micro-silica is the additive that demonstrates the best properties both in terms of its environmental analysis and in terms of improving the water resistance of magnesium binding materials.5. Environmental analysis of the life cycle of modifiers can be recommended as an important stage in the planning of experiments aimed at improvement of properties of building materials.

Обоснована важность экологической оценки строительных материалов. Предложено проводить экологическую оценку модифицирующих добавок. Приведены данные о водостойкости изделий на основе каустического магнезита с различными модифицирующими добавками.