Permeability Identified as a Critical Corrosion Factor (11/22/06)
According to an independent survey of wastewater engineers, municipal managers and contractors, a chemically resistant lining's permeability to corrosive substances was shown to be the most important consideration during product selection. The survey was conducted in April 2006 by WaterOnline, a service for the water and wastewater industry, and was sponsored by Sauereisen, Inc., a manufacturer of industrial construction materials.
"Because of government mandated industrial pretreatment, longer detention times for waste water due to air quality regulations and other factors, concrete structures in waste water infrastructure are exposed to more severe conditions now than in the past," said Randy Nixon, senior consultant, Corrosion Probe, Inc., an engineering and consulting firm in the field of corrosion and material science. "Under these conditions, permeability is perhaps the most prominent factor in the failure of coatings designed to protect concrete from this rapid degradation."