Development of Self-Repairing Cut off sheets (Part 1)

Abstract

Studies are underway for the development of cutoff sheets (CH-200) for use at final disposal yards, which are capable of preventing the expansion of perforations and of self-repair. The study reported here was concerned with the basic properties of these cutoff sheets, in terms of the effects of water pressure, temperature and quality, as well as the structure of the sheets themselves, on their capacity for self-repair. It was found that the capacity for self-repair could be maintained under water pressure of up to 3kgf/cm², and at the temperatures normally encountered in groundwater and waste.