Yes! The strength of concrete (related to cement content and strength grade-commonly known as grade) can be detected by rebound tester or core pressure test. There is also a nondestructive testing instrument for steel bar content, which will automatically display the diameter and spacing of steel bars near the surface of the component. The above instruments must be operated by professional testers and the data obtained must be analyzed.
General building management departments: Construction Committee, quality inspection department of Urban Construction Bureau, and large and medium-sized professional building construction units are all necessary instruments. If you have acquaintances, you can ask them for help. If you don't know anyone, pay for it. They usually come.