Abstract: The concrete has a porous structure. It suffers from deterioration caused by permeation of ions and water. In this article, a permeable coating (PSEp) for concrete has been prepared by using epoxy and furfural acetone. The coating has excellent wettability on concrete surface. Specifically, it can permeate into the pores or defects of mortar (W／C=0.5) with its depth up to 4.0 mm and cures thereat so that the concrete surface can be sealed. The mechanical property of the concrete is significantly improved by coating PSEp. The adhesion (pull-off strength) of the coated concrete is increased by more than 130％. Moreover, the resistance to ion permeability of the coated concrete increases, and the total electric flux decreases from 3 400 C to 130 C. The coating (PSEp) is useful for anticorrosion of concrete.
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