The concrete surface is very smooth. If the cement slurry is directly used for roughening without treatment, the bonding will be poor and it will easily lead to peeling between the roughened layer and the concrete surface; such as Chiseling the concrete surface has a good effect, but it is labor-intensive and time-consuming. 209 interface treatment agent is a gray solid powder, mainly used for interface treatment of concrete base plaster, and can also be used for surface treatment of large blocks. The surface of the base layer treated with the interface treatment agent can increase the adhesion of the cement mortar to the base layer, and has high water resistance, heat resistance, and freeze-thaw resistance, avoiding the phenomenon of plaster bulging, shelling, and falling off. This replaces the manual chiseling process, saves time and effort, and greatly improves the quality of the project. It has been determined by comparison that under the same conditions, the bonding force between the base layer and cement mortar treated with 209 interface treatment agent can be increased by 45-65%.
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