Chimney wall corrosion of the construction process. Vinyl ester glass flake in the construction process chimney wall corrosion of concrete structures: Surface treatment → VEGF primer one to two → Trowel scraped 2mm thick clay VEGF (secondary) → uneven parts of FRP strengthening → VEGF topcoat completion and acceptance of one to two → When VEGF scales for clay (paint) used in basic concrete surface to surface treatment on the concrete surface, specific requirements are as follows: cement mortar or concrete base, must be strong, dense, smooth; grassroots slope and intensity should comply with the relevant design requirements There should be from the sand, from the shell, crack, Honeycomb and so on. 2, the primary must be dry. 20mm thickness in the deep layer of the concrete surface is dry (pale), moisture content should not exceed 6%. 3, cement mortar or concrete base below the water table if required to do before the grassroots isolation layer to prevent groundwater leaking steam. 4, the primary surface must be clean. Former anti-corrosion construction should floating ash, slag cement and loose surfaces such as grass-roots part of the clean up. The primary surface treatment method should be used, such as grinding wheel or wire brush the surface with a clean soft brush, compressed air or a vacuum cleaner to clean up. When the conditions, can be mild sandblasting method, a uniform rough surface at the grassroots level. 5, has been rebuilt surface or grease, chemical pollution, the expansion project has been the erosion of loose grass roots, should be surface pretreatment, treatment methods should meet the following requirements: (1) by the surface oil, chemical pollution, and can the use of solvents, detergents, washing lye or roasted, steam purging methods such as treatment, but not damage the grass-roots level; (2) is corrosive erosion of loose grass roots must be clean, chiseled, and so filled with fine aggregate concrete, curing After pressing the new primary processing. 6, where through the corrosion of pipes, casing, aside hole, embedded parts, should be set up in advance or remain buried.