腐食形態を考慮した鉄筋コンクリートの補修技術に関する基礎的研究

抄録

This study was to establish the rational repair technology in consideration of the corrosion cell formation pattern (local corrosion or uniform corrosion) and the chloride ion penetration depth of reinforced concrete. The two types of specimen were used; one was the local corrosion specimen with crack and the other was the uniform corrosion specimen without enough cover. During the exposure periods to the accelerated chloride environment, the specimen was performed by some repair methods under the different situations of the chloride ion penetration. The repair methods were the injection method, the surface sealing method, and the local repair method. The conclusions were as follows. The injection method for local corrosion and the surface sealing method for uniform corrosion were rational under the shallow chloride ion penetration. While, it was worry to re-corrode using the injection method and the surface sealing method after the chloride ion penetrated into the deep concrete. Therefore, it was confirmed that the early repair was useful for both the local corrosion and uniform corrosion.