ABSTRACT
ABSTRACT. The aggressive action of hydrogen sulphide on the hardened concrete by many authors [1,4] were studied, it is frequent the opinion, that such aggression is relatively not important, because the hydrogen sulphide in air and water in the building construction environment not exists in high concentration. The author of this paper represents the different opinion on the base of many years studies and observations of concrete sanitary collectors, evacuating the industrial and domestic liquid wastes. The author of this paper, the review of non-excavation methods carry out for collectors reinforcement. The such methods in USA, West Europe and Japan were elaborated in 60-th years, for the collectors demanding of repairs. Finally the decision of method "relining" application was undertaken, and the hungarian tubes UPE of firm BONEX production were used. The repair works followed the numerous studies determining the wastes aggressiveness and the collector concrete destruction mechanism.
