SURFACE TREATMENT OF EXISTING CONCRETE STRUCTURES

Figure 3: Active and passive methods of protecting reinforement from corrosion in concrete [2]

Figure 3 shows a number of ways for protecting concrete from corrosion. The passive methods work by altering the environment and making it less likely to produce aggressive chemicals at the metal surface. The active methods concentrate on making the surface more resistant to aggressive environments. A long-term evaluation of the effectiveness of MCI surface impregnation was begun in 1994. After 4 years of testing it was concluded that the effectiveness of MCI's was observed and confirmed by the test data. Significant differences were found between MCI treated structures and controls that had not been treated.[2]

PAGE 1 2 3 4 5 next