Method of resisting corrosion in metal reinforcing elements...

Details Method of resisting corrosion in metal reinforcing elements... Method of resisting corrosion in metal reinforcing elements...

2006-07-25

2006-07-25

Marcantoni, Paul (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

C106S813000, C106S819000, C106S014210, C052S596000, C052S741410, C052S742140

Reexamination Certificate

active

07081156

ABSTRACT:
A method of resisting corrosion of metal elements in concrete is provided. It includes introducing into concrete containing metal elements, at least one combination compound capable of sequestering chloride ions having the formula 3Me(II)O.(R,R′)2O3.Me(II)(anion)2.nH2O, where R and R′ are different and are independently selected from the group consisting of Al, Fe and Cr; anion is selected from the group consisting of NO2, NO3and OH, n is 0 to 24, and Me(II) is a cation and is selected from the group consisting of Ca, Ba, Sr, Mn, Zn and combinations thereof. In one embodiment of the invention, concrete structures may be rehabilitated by providing an overlay containing the combination compound, with the overlay being provided in situ or as a preformed member and with possible use of a slurry in combination with an overlay segment.

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“Inhibitors of corrosion of the reinforcement steel in concrete with addition of calcium chloride” Ratinov et al. Tr. Nauchn-Issled Inst Betona i Zhelezobetona (1961), No. 22, p. 40-53.
Taylor, Cement Chemistry, 1997, pp. 173-176.
American Concrete Institute, Committee 201 report: Guide to Durable Concrete, no date available.

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