International. In a new study, scientists at the South China University of Technology have developed an epoxy-based permeable coating with reactive solvent for concrete anti-corrosion.
Concrete usually suffers from deterioration caused by ions and water that gets soaked in cracks, pores and other defects. Scientists have prepared an epoxy solution with carbonyl solvent, where the solvent and epoxide can react with the amine (curing agent) to form a network.
The epoxy solution has remarkable wettability on the surface of the concrete, and can even penetrate the pores or defects in the concrete. After coating with the epoxy solution, the strength of the concrete can be improved above 9.3MPa. In particular, coated concrete exhibits excellent anti-corrosion performance with a total load passed in chloride permeability as low as 130ºC.
Source: www.sciencedirect.com
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