Efficiency Of Pipe-Lines Rehabilitation By Method Of Applying Cement-Sand Coating
Trenchless technologies for restoring pipelines operation are becoming more common in our country when repairing and reconstructing municipal water supply and water disposal systems. One of the popular and cost-effective methods is the application of cement-sand coating, which has high mechanical and anti- corrosion properties. The results of full- scale hydraulic experiments in order to determine the empirical dependencies of pressure losses for a steel pipe with an applied cement-sand coating are presented. The experiments were carried out at the experimental production stand of the Department of Water Supply and Water Disposal of the Moscow State University of Civil Engineering. The results obtained make it possible to perform an estimated hydraulic calculation of the pipeline water supply network during major repairs. Applying the protective cement -sand coating during pipeline repair makes it possible to ensure the required level of its reliability and reduce accidents on water supply networks, improve the hydraulic characteristics of the restored pipeline, as well as preserve the quality of water transported from water treatment stations to consumers.