In the process of pouring fair faced concrete, if there are uneven base surface, wrong edges and corners, honeycomb, slurry leakage, color difference, pitted surface, skew and so on, the fair faced concrete slab can be used for repair.

1. One sided coloring repair method: for those buildings with clear water, if the color difference of the base surface is relatively large and the honeycomb and pitted surface appears a lot of conditions, this repair method can be used.

2. Transparent part repair method: make fair faced concrete hanging board to repair, can preserve the texture of water and small area of defects, only repair large area of defects.

3. Pure transparent protection method: the quality of fair faced concrete slab is relatively good, which can retain the texture of clear water and allow defects.

4. Imitation fair faced construction method is a way to repair large area honeycomb and pitted surface and sand and mortar leakage parts by using fair faced concrete hanging plate. Using this method can directly replace the color paste to repair the color difference caused by cement, and using water hanging board to repair can avoid the situation of insufficient adhesion and fading.