POSTERIOR SALT DAMAGE PREVENTION METHOD OF EXISTING REINFORCED CONCRETE STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a posteriorly-executable salt damage prevention method dispensing with a chipping work, relative to an existing reinforced concrete structure.;SOLUTION: A chloride ion removing layer obtained by curing a composition containing cement, a fine aggregate, a chloride ion adsorbent is formed on a concrete skeleton surface of the reinforced concrete structure, and a chloride ion shielding layer obtained by curing a composition containing cement, a fine aggregate, a chloride ion adsorbent is formed in piles on the chloride ion removing layer, and further a surface protection layer comprising a water-repellent/moisture-permeable coating film is formed in piles on the chloride ion shielding layer, to thereby reduce the concentration of external chloride ion having penetrated the inside from the reinforced concrete skeleton surface of an existing reinforced concrete structure. Further, generation of a salt damage is suppressed effectively by shielding penetration of external chloride ion after the construction.;COPYRIGHT: (C)2012,JPO&INPIT