Other construction industries

東興ジオテック リニューアル事業部

EstablishmentMarch 19, 1956
capital8000Ten thousand
addressTokyo/Chuo-ku/7-12-7 Ginza, Takamatsu Construction Building
phone03-3456-8751
last updated：
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東興ジオテック List of Products and Services

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DuoGuard method (hybrid sacrificial anode material)

A new hybrid repair method that combines the characteristics of two effective approaches for preventing salt damage in concrete structures: external power supply type cathodic protection and impressed current anode method.

Effective measures against salt damage can be implemented through two phases: the external power supply phase (de-salting and re-alkalization) for improving the environment around the rebar, and the electrolytic anode phase that utilizes the differences in ionization tendencies of zinc and iron to long-term suppress rebar corrosion.

  • Renovation and repair methods

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Titanium rod internal insertion anode method (external power supply method)

Corrosion protection for temporary scaffolding and difficult-to-access areas can be carried out according to site conditions.

The titanium rod internal insertion anode method is an external power supply electrochemical corrosion protection method that involves inserting and installing a rod-shaped titanium anode into the interior of concrete from the surface. Since the anode is installed inside the structure, there are no limitations on the construction surface, allowing for the anode to be inserted and installed from any direction to implement electrochemical corrosion protection. It is suitable for areas where temporary scaffolding is difficult or where the construction surface is limited, as well as for partial corrosion protection at bridge girder ends and similar locations.

  • Renovation and repair methods

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Patch guard method (internal insertion type sacrificial anode material) flow electric anode method

Electrolytic cathodic protection method using impressed current anodes effective in suppressing macrocell corrosion of internal steel in concrete structures due to salt damage and other factors.

This is a small spot-type sacrificial anode system developed to prevent re-deterioration due to macrocell corrosion at the cross-section repair locations.

  • Renovation and repair methods

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