Concrete protective agent, method for repairing concrete structure, impregnation inducing agent for concrete structure, and defect filling agent for concrete structure

Abstract

A concrete protective agent including an alkali metal-containing silicate and an alkaline electrolyzed water. A concrete protective agent including an alkali metal-containing silicate and silicon dioxide. Examples of the alkali metal-containing silicate include sodium silicate, potassium silicate and lithium silicate. By supplying the concrete protective agent to a concrete structure, the repair of the concrete structure can be performed. A concrete repairing agent having a significant repairing effect as compared with conventional concrete repairing agents.

We claim: 
     
         1 . A concrete protective agent comprising:
 an alkali metal-containing silicate; and   an alkaline electrolyzed water;   wherein the alkali metal includes sodium and at least one of potassium and lithium.   
     
     
         2 . A concrete protective agent comprising:
 an alkali metal-containing silicate;   an alkaline electrolyzed water; and   silicon dioxide in a state of being undissolved in the alkaline electrolyzed water.   
     
     
         3 . The concrete protective agent according to  claim 2 , wherein the alkali metal includes at least one of sodium, potassium and lithium. 
     
     
         4 . A defect filling agent for a concrete structure, comprising an alkaline electrolyzed water, and silicon dioxide in a state of being undissolved in the alkaline electrolyzed water. 
     
     
         5 . The concrete protective agent according to  claim 2 , wherein the alkali metal includes sodium and at least one of potassium and lithium. 
     
     
         6 . The concrete protective agent according to  claim 2 , wherein the silicate aggregates with the silicon dioxide as nuclei. 
     
     
         7 . The concrete protective agent according to  claim 2 , wherein the weight of the contained silicate is larger than the weight of the contained silicon dioxide.