Computer simulation of optimal thickness of polyurea coating using for trenchless renovation of potable water pipes

摘要

The computer simulation of strength properties of two-layer pipe construction "old pipeline + protective coating" has been conducted for quick curing polyurea formulation-Scotchkote 169HB and Scotchkote 2400. The research objective was to determine the effective range of coatings thickness for trenchless renovation of water supply pressure pipelines during its long operation (up to 50 years). Simulation was utilized the developed computer strength model of two-layer construction with through defect in a form of a hole. This model was based on real physical and mechanical characteristics of the protective coatings, which were determined with taking into account the gradual aging of the polymer material during the 50 years operation of protective coatings.