Evaluation of a Plural Component Pipe Coating Mixed on and off Ratio and Subjected to Hot Water Soak and Cathodic Disbondment Testing per CSA Z245.30

Abstract Evaluation of a plural component pipe coating mixed on and off ratio and subjected to hot water soak and cathodic disbondment testing per CSA Z245.30-18. This work attempts to demonstrate that a 10% margin for error in mix ratio is an acceptable tolerance for anticipating good performance. A widely specified plural component pipe coating with a mix ratio requirement of 3 parts epoxy base (Part A) to 1 part amine curing agent hardener (Part B) was tested at mix ratios just above and below the 10% acceptable error margin. The hot water soak test and cathodic disbondment test per CSA Z245.30-18 were used as the performance testing benchmarks for this work. Will the results justify the 10% allowance for mixing errors?