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AWWA C205 Cement-Mortar Protective Lining
The AWWA C205 standard establishes detailed specifications for the shop application of cement-mortar protective linings and coatings on steel water pipes with diameters of 4 inches (100 mm) and larger. These linings and coatings play a critical role in enhancing the longevity and performance of the pipelines by providing robust corrosion resistance, structural reinforcement, and maintaining water quality standards.
Adherence to AWWA C205 ensures uniformity in application methods, material quality, thickness requirements, surface preparation techniques, and quality control measures, thereby guaranteeing the consistent and reliable performance of the lined and coated steel water pipes in various water distribution systems. The purpose of the AWWA C205 standard is to establish minimum requirements for the shop-applied cement-mortar lining and coating of steel water pipes. This includes specifications for materials, application methods, inspection procedures, handling protocols, and field-jointing requirements, ensuring consistency, quality, and durability in water distribution systems.
Furthermore, AWWA C205 outlines rigorous inspection protocols to verify compliance with specified parameters, encompassing both in-process monitoring and final inspection procedures to guarantee the quality and reliability of the applied linings and coatings. Handling requirements are also addressed to prevent damage or contamination during transportation, storage, and installation, thereby preserving the efficacy of the protective materials. Additionally, the standard provides detailed guidelines for field-jointing processes, ensuring seamless integration of coated pipe sections and maintaining the integrity of the protective layer throughout the pipeline network.