| abstract |
【Task】 Permeable rust inhibitor applied to the concrete surface to suppress deterioration due to rust of the steel material inside the existing concrete structure, and the components effective for rust prevention are disposed of steel materials such as rebar inside the concrete. Provided is a penetrating rust inhibitor for a concrete structure which can be sufficiently penetrated to a position. [Solution] The permeable rust preventive for concrete structures is composed of 2,4,7,9-tetramethyl-5-decyne-4,7-diol, ether type nonionic surfactant, nitrite and water. Preferably, the pH is 9 or more. [Selection figure] None |