The Apparatus and Test Method for slump of Freshly Mixed Concrete

摘要

The present invention relates to an apparatus and a method for testing a non-hardened concrete slump, in which the reliability of the slump test is improved by measuring the spread of the slump sensor along the circumference of the concrete specimen while varying in height, And it is intended to prevent the deformation of the concrete specimen caused by the slump cone. An apparatus for testing a non-hardened concrete slump according to the present invention comprises: a base plate (10); A rotating rim (20) mounted on a bottom surface of the base plate so as to be rotatable about a center of the base plate; A slump cone (30) installed on the base plate and providing a space for pouring concrete therein to produce a concrete test body; The first and second legs 41 and 42 are fixed to the rotary rim. The sensor support supports the first and second legs and rotates about the concrete test body together with the rotary rim. 40); A slump sensor installed on the sensor support and detecting a slump change while rotating around the concrete specimen; And a controller for extracting a slump change of the concrete specimen based on the sensed value of the slump sensor, wherein the slump sensor includes a plurality of slump sensors installed on a first leg of the sensor support, A height sensor 50 for sensing a change in the height of the concrete specimen, the height sensor 50 comprising a light emitting portion and a light receiving portion for receiving light emitted from the light emitting portion, And a plurality of width detection sensors mounted on the bottom of the connection at regular intervals from each other for irradiating light toward the concrete specimen and detecting width variation based on a received signal, As the slump sensor rotates around the concrete specimen, the concrete specimen The slump test changes in several directions.