Evaluating performance of a plural component pipe coating mixed on and off ratio

Paper ID: C2025-00291 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. This work attempts to demonstrate a 10% margin for error in mix ratio is an acceptable tolerance for anticipating good performance. A widely specified plural component product 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 were used as the performance testing benchmarks for this work. Will the results justify the 10% allowance for mixing errors?