[Methods for estimation of microbe resistance of protective coatings].

Methods are proposed which permit estimating bioresistance of protective materials against denitrifying hydrocarbon-oxidizing and sulphate-reducing bacteria-destructors of coatings in laboratory conditions. The methods are based on the quantitative determination of bacteria growth in presence of coatings as the only source of hydrocarbon. Besides, attention is given to changes of certain indices of physico-mechanical properties of coatings: breaking strength and adhesion strength for coatings from polymeric bands, softening and expansion temperature for mastic materials.