Cation concentration increasing agent, modifying agent for concrete structure, method for manufacturing same, and method for repairing concrete structure

Abstract

A modifying agent of an alkaline electrolyzed water. A substance being supplied to a concrete structure in order to produce calcium silicate for repairing concrete and including an alkali metal silicate is defined as a concrete protective agent. The modifying agent is supplied to the concrete structure in advance of the supply of the concrete protective agent. The alkali metal silicate and the calcium ion included in the concrete protective agent contribute to the production of the calcium silicate. A method for repairing a concrete structure includes supplying the concrete protective agent to the concrete structure and supplying a modifying agent for a concrete structure including an alkaline electrolyzed water to the concrete structure, the step supplying a modifying agent being performed before the step of supplying the concrete protective agent to promote production of the calcium silicate in step of supplying the concrete protective agent.

Dependencies are inferred from the claim text.