A V-shaped funnel device for measuring the fluidity of concrete

Abstract

The invention discloses a V-shaped funnel device for measuring the fluidity of concrete, comprising: a V-shaped funnel, a bracket, a laser distance measuring timer, a fixing frame, and a material container; the upper part of the V-shaped funnel is open, and the opening plane is symmetrical to the funnel The shaft is vertical, the opening narrows down in a V shape, the tail is a hollow cuboid, and the bottom of the cuboid has a watertight bottom cover that can be opened quickly, and the two are connected by the shaft core and torsion spring; the bracket is in good contact with the side of the V-shaped funnel Fitting, so that the upper opening of the V-shaped funnel is in a horizontal state; the laser distance measuring timer is fixed on the bracket through the fixing frame, and its working mode can be controlled through its buttons, and the height of the midpoint of the concrete in the container and the height of the V-shaped funnel can be accurately measured. Time for the inner concrete to completely flow out. The effect of the invention is that the laser distance measuring chronograph can eliminate artificial timing errors, accurately measure the height of the midpoint of the concrete in the container and the time for the concrete to completely flow out in the V-shaped funnel, and then accurately judge the fluidity of the concrete.

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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