The application discloses a high-thick-
brick city wall
surface layer weathering prevention method and belongs to the field of historical building protection. The
weathering prevention method controls the
chemical reaction of a hydrophobic material, reduces the
mass of hydrophobic substances generated by the
chemical reaction in the
penetration process, avoids the influence of the
penetration process of weak hydrophobic substances on the penetration coefficient of the city wall
surface layer bricks, prolongs the penetration time of the hydrophobic material, improves the
penetration depth of the hydrophobic material in the city wall
surface layer, weakens the dry shrinkage reciprocating change, realizes the deformation and stress coordination of the waterproof layer of the city wall surface layer and the internal wall body, avoids the
stress concentration phenomenon of the waterproof layer shell, further achieves the purpose of preventing the
weathering effect of external rain and
snow immersion into the city wall surface layer and limiting the salt accumulation caused by the
evaporation of the water in the city wall, realizes the purpose of deeper penetration of the hydrophobic material into the city wall, and solves the weathering diseases of the high-thick-
brick city wall.