Stone is the main skeleton of concrete, so it is called' coarse aggregate', which depends on the quality of concrete. Section 7.2 of Chapter 7 of Code for Acceptance of Construction Quality of Concrete Structure Engineering (GB 50666-201/KLOC-0) stipulates the particle size, silt content limit, needle-like and weak particle limit, grading requirements, crushing index, etc. These performance indicators are impossible to achieve with broken bricks. Therefore, broken bricks can only be used as three-way soil and four-way soil, and cannot be used as a component of concrete.