Mineral fertilizers and chemical means of plant protection usually consist of small-fraction materials that are harmful to personnel of warehouses and damage buildings.
While being packaged and loaded, free-running small-fraction materials accumulate on constructions in the form of dust and penetrate into pores of construction materials as solution which is formed under high relative humidity in the premises and due to high water absorbency of certain salts.
The impact level of mineral fertilizers’ dust depends on their kind and water absorbency, solubility and dispersity in water, the intensity of air exchange, and most importantly, on humidity and temperature.
Corrosion of porous materials under the action of salts is most severe in constructions which are subject to repeated wetting and drying.
Due to the fact that fertilizers are highly hygroscopic, i.e. have the property to actively absorb moisture from air, they can become compressed and stick into lumps.