Fiber uniformity evaluation method for polypropylene fiber concrete

The invention provides a method for evaluating the fiber uniformity of polypropylene fiber concrete, aiming at the high requirement on the fiber dispersion uniformity in a polypropylene fiber concrete test, and aiming at the high requirement on the fiber dispersion uniformity from the two aspects of polypropylene fiber mixing amount and mixing process. The uniformity of fibers in a polypropylene fiber concrete test is ensured through a method of designing a test and optimizing a process, a polypropylene fiber mixing amount interval is determined according to requirements, and a mixing amount gradient is divided; the method comprises the following steps: comprehensively analyzing the dispersion condition of the polypropylene fiber in a stirring process, the dispersion condition of the polypropylene fiber in a cement slump test and a cement expansion test, and the dispersion condition of the polypropylene fiber in a vibration test to determine the fiber uniformity value of the polypropylene fiber under the cond