346 RESULTS The following are observed: striation of the surface of the samples when wetting; breakage of their surface during transportation. Thus compromised surfaces prevent the correct testing of the quality of the formed crusts. When treated with any of the Innocoat products –1080, 1038, 1090 – the surface of the fayalite hardens – a “crust” is formed, regardless of the concentration of the solution. During testing, the surface of the treated samples is destroyed in the previously compromised areas when a very strong and directed air jet is applied – the distance from the air source to the sample is about 10 cm. Such a strong jet of air does not appear in real conditions on the deposited fayalite. When blowing the treated samples from a large distance (1 m), their surface remains intact. Such blowing is more similar to a real strong gust of wind at the fayalite landfill. The control samples were treated with water and lime milk. When treated with water, no crust forms and rapid evaporation follows; When treated with lime, a surface layer forms, but it is easily destroyed by blowing and is not effective in wet conditions. Compared to Innocoat 1080, the crust is more brittle and less elastic. Control samples with lime milk show the following limitations: • Easy peeling of the surface in wind; • Short effect (up to 24–48 hours); • Requirement for daily treatment; • High solution costs (~14 L/m²); • Instability in humid or rainy conditions. Field tests were carried out in an emergency depot. For the repeated tests, an area (5x5 m) of the emergency depot was prepared. The surface was cleaned of lime milk. Within this area, 9 squares with an area of 1x1 m were defined, treated with equal amounts – 2.5 L/m2 – of the reagents, with different concentrations of the solutions. Reagents: Innocoat 1080, Innocoat 1038, Innocoat 1090 were applied with the corresponding concentration: 1 wt.%, 3 wt.%, 5 wt.
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