Existing concrete compression strength diffusion method detector

The invention discloses an existing concrete compression strength diffusion method detector. The detector comprises two flag-shaped diffusion legs arranged in a concrete arc-shaped groove in back-to-back form, an external side face at the bottom of one side of the flag-shaped diffusion leg is fixedly connected with a cylindrical pressure head, the external side face at the bottom of the opposite side is connected with a support backing plate through a spherical support, and a top surface of the flag-shaped diffusion leg is connected with a force application device. According to the detector provided by the invention, the concrete arc-shaped groove is cut, then, force is applied to the side wall of the concrete arc-shaped groove through the force application device and the flag-shaped diffusion legs, until the side wall of the concrete arc-shaped groove is damaged, thus, a maximum diffusion pressure value is read, moreover, the concrete compression strength is presumed according to a conversion formula establi