Answer:
Theoretically, if these carbonate crystals on the wall are neutralized with acidic liquids such as dilute hydrochloric acid or soda water, they can reduce the phenomenon of the wall peeling off again. The problem is that the main reason for concrete deterioration is “neutralization”; today, to solve the wall cancer problem, wiping the wall with dilute hydrochloric acid will inevitably penetrate into the plaster layer or the RC structure, accelerating the deterioration of the wall, making the wall cancer situation even more severe. So, is it necessary to pay the price? Therefore, this kind of method should never be used; it is recommended to use a water-proofing material of silicate-based system instead, which is the long-term solution.