The Good, The Bad, The Ugly: The Truth About Concrete Resurfacing Technologies

Description

Full and complete rehabilitation of a concrete water or wastewater treatment asset always includes resurfacing the concrete structure to restore structural integrity, specified design thickness, strength, as well as to create a uniform surface for coatings and linings to be applied to in an effort to reduce surface defects that cause premature linings failures. Many excellent technologies exist to accomplish this critical task. This paper will compare and contrast multiple methods and technologies commonly used in the water and wastewater market to rehabilitate concrete structures such as Ordinary Portland Cement, Hydraulic Cements, Microsilica Mortars, Calcium Aluminate Mortars, Polymer Modified Cements, Cementitious Epoxy Resurfacers and Epoxy Mortars.

The paper will dive into critical details a specifier and contractor need to know to evaluate the applicability of each technology for the exact project being completed. These details include physical properties, application methods, the requirement for surface saturated dry conditions for application, cure to service times, surface preparation requirements, recoat times and procedures as well as the cost of application.