Concrete fluidity estimation method, concrete manufacturing method and concrete fluidity estimation device

摘要

To provide a method for estimating flowability of concrete capable of accurately estimating the flowability of the concrete while being mixed.SOLUTION: A method for estimating flowability of concrete includes: a mixing step for mixing concrete stored in a mixing part of a concrete mixer; a photographing step for photographing an image of the concrete entering at least one recessed part which is provided at the mixing part, and which has an inclination for causing the concrete to flow down during the mixing step; and a flowability estimation step for, on the basis of association information in which information acquired from the photographic image of the concrete is preliminarily associated with a flowability index result value as a result value of a flowability index of the concrete, acquiring a flowability index estimation value as an estimation value of the flowability index of the concrete in the mixing step from the photographic image of the concrete photographed in the photographing step.SELECTED DRAWING: Figure 1