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OwnerGareth Kevin Glass, Nigel Davison +1inventors
InventorsGareth Kevin Glass, Nigel Davison, Adrian Charles Roberts
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High performance proprietary cementitious concretes or mortars developed for use as patch repair materials for corrosion damaged concrete often have high resistivities that inhibit the performance of sacrificial anodes located within the patch repair areas. A method of repair is disclosed which comprises removing the corrosion damaged concrete to form a cavity to receive a concrete repair material and forming within this cavity a smaller distinct cavity for assembling a sacrificial anode assembly and placing within this second cavity a pliable viscous ionically conductive backfill and a sacrificial anode and an activating agent to form a sacrificial anode assembly and connecting the anode to the steel and covering the anode and the backfill in the second cavity with a repair material to restore the profile of the concrete structure. In this arrangement a high resistivity repair material promotes the flow of protection current to steel in adjacent contaminated concrete that is at risk of corrosion.
A method of repairing a corrosion damaged concrete structure which comprises removing the corrosion damaged concrete to form a first cavity to receive a concrete repair material and exposing at least one steel bar within the first cavity and forming within the concrete a smaller distinct second cavity that opens into the first cavity for assembling a sacrificial anode assembly and placing within the second cavity a pliable viscous ionically conductive backfill and a sacrificial anode and an activating agent to form a sacrificial anode assembly and connecting the sacrificial anode to the steel bar exposed in the first cavity with an electron conducting conductor that runs from the sacrificial anode to the exposed steel bar and covering the anode and the backfill in the second cavity with a repair material to restore the profile of the concrete structure.
Dependencies are inferred from the claim text.