MECHANICAL STUDY ON REHABILITATION OF PIPELINES BY GUNITE COVERING
Abstract: Most utility networks, such as: gas, water, sewerage, industrial lines, heating, are outdated; defects
and exfiltration occur more often, which for safety and economic reasons have to be quickly repaired. For such
situations, the so-called “No dig” technology – rehabilitation without excavation, has been applied with
increasing frequency during recent years. This technology, presented in this paper, consists of inserting a
composite material tube impregnated with a reactive resin (selected according to the pipe’s use) into the pipe to
be rehabilitated. After inserting the tube into the pipe, the tube is subject to polymerisation, consequently
producing a new pipe of superior quality. The method is applicable to pipe with diameters ranging between Dn
100mm – Dn 2000mm and length up to 600.00 m.
Key words: lining, pipe rehabilitation, “No dig” technology.
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