A Novel Method to Perform the Burst Pressure Test on the Repaired Drinking Water Pipelines

Article history: Received 5 April 2021 Reviewed 3 August 2021 Revised 12 August 2021 Accepted 19 August 2021 This article investigates the repair process of damaged steel pipes of drinking water transmission lines by polyester resin or putty and a composite patch, as well as the internal pressure capacity of the repaired specimens during burst pressure tests carried out by the experimental method. The main aim is to introduce a completely practical method for repairing the pipelines in out-of-town areas without using electrical or other advanced equipment. In addition, an innovative novelty is employed in the burst pressure tests. Experiments demonstrate that the repaired pipes by the molded polyester putty and a composite patch of 100×100 mm2 dimension with 3 or 5 layers can approximately sustain the maximum internal pressures up to 44 or 55 bar, respectively; while the repaired pipes by the molded polyester resin and the corresponding composite patch with 3 or 5 layers can withstand the maximum pressures up to 28 or 40 bar, respectively. Repairing the pipes by the presented methods helps achieve the main purpose of the present research, with an admissible safety factor.