Drawing head for concrete carbonization protective layer adhesive strength test instrument

The utility model relates to a drawing head for a concrete carbonization protective layer adhesive strength test instrument. The drawing head is characterized by comprising a drawing head body (3), wherein the top of the drawing head body (3) is provided with an annular lug boss (3a); the annular lug boss (3a) is matched with a nut (2) in a locking way; the bottom of the drawing head body (3) is provided with an adhesive surface; and the adhesive surface is provided with an annular cutting edge (3d). The drawing head disclosed by the utility model can not only be used for drawing a concrete carbonization protective coating positioned in a tested area out of a concrete surface positioned in the tested area, but also be used for eliminating the adhesion between the concrete carbonization protective coating positioned in the tested area and carbonization protective coatings positioned around the concrete carbonization protective coating, thereby enhancing the accuracy of test data and effectively preventing the overflow of structural adhesives.