| abstract |
The present invention provides a method for reliably suppressing the alkali silica reaction of existing concrete at a simple and low cost. A method of suppressing the alkali silica reaction of concrete by immersing concrete in an aqueous solution of calcium nitrite and / or calcium nitrate, or applying, dispersing, or internally pressing the aqueous solution to concrete. The concentration of calcium nitrite and / or calcium nitrate in the aqueous solution is 0.5 mol / L or more, and when the concrete is immersed in the aqueous solution, the immersion period is preferably 3 to 14 days. Method. [Selection] Figure 1 |