V-shaped funnel device for measuring concrete flowability

Abstract

The invention discloses a V-shaped funnel device for measuring concrete flowability. The V-shaped funnel device comprises a V-shaped funnel, brackets, a laser distance-measuring timer, a fixed frame,and a containing container, wherein the upper part of the V-shaped funnel is equipped with an opening, and the plane of the opening is perpendicular to the symmetrical axis of the funnel; the openingis downwards reduced in the form of V; the tail part of the V-shaped funnel is in the form of a hollow rectangle; the bottom of the rectangle is equipped with a watertight bottom cover capable of being quickly opened, and the rectangle is connected with the watertight bottom cover through a shaft core and a torsion spring; the brackets are in good contact fit to the side surface of the V-shaped funnel, so that the upper opening of the V-shaped funnel is in the horizontal state; the laser distance-measuring timer is fixedly arranged on the brackets through the fixed frame, and a working mode can be controlled through a button; and height of a concrete middle point in the containing container and complete flow-out time of the concrete in the V-shaped funnel are accurately measured. The laserdistance-measuring timer can eliminate manual timing errors, and precisely measures the height of the concrete middle point in the containing container and complete flow-out time of the concrete in the V-shaped funnel, so that flowability of concrete is accurately judged.

Description

technical field [0001] The invention belongs to the technical field of construction equipment, in particular to a V-shaped funnel device for measuring the fluidity of concrete. Background technique [0002] With the development of the economy, more and more buildings need to carry out concrete pumping construction, which requires that the concrete not only meet the specified strength and durability requirements, but also meet the fluidity requirements. [0003] In the current codes, concrete slump and expansion tests are often used to test the fluidity of fresh concrete. Engineering practice has proved that the above two methods cannot fully reflect the fluidity of concrete. Therefore, the test method of inverted slump time is occasionally used. That is, fill the slump bucket with concrete and invert it so that it flows from top to bottom, and measure the time it takes for it to flow completely. This method is difficult to ensure that the opening of the slump bucket is in ...

AI Technical Summary

Problems solved by technology

This method is difficult to ensure that the opening of the slump bucket is in a horizontal state during the test, and for high-fluidity concrete, the test time is very short, and the test often requires the cooperation of multiple people. The error is difficult to control

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