Quick measuring device for concrete slump and usage method

Abstract

The invention discloses a quick measuring device for concrete slump and a usage method, and belongs to the field of concrete preparation. The device consists of a circular fixed base, a guide rod, a guide ring, a fixed seat handle, a positioning pile, a mobile drum, a mobile drum pulling rod, a mobile drum handle, a slump upper limit marking point, a slump lower limit marking point and a mobile drum pulling rod marking point. The usage method comprises the following steps: marking a corresponding relation between the actual slump of concrete slurry and the slump measured by the device on the guide rod of the slump quick measuring device according to the result marking the slump quick measuring device by a standard slump drum to be used as a metering basis of the slump quick measuring device; and inserting the slump quick measuring device into the concrete slurry to be measured, filling the concrete slurry into the mobile drum, then hoisting the device, troweling the redundant concreteslurry on the surface of the mobile drum, and hoisting the mobile drum so as to measure the slump of the concrete slurry to be measured. The device has a small volume, and the measuring method is simple and convenient and has short measuring period.

Description

technical field [0001] The invention belongs to the field of concrete pouring, and can be applied to the quick measurement of the slump of wet shotcrete in underground mine roadways, highway and railway traffic tunnels, water conservancy and hydropower tunnels, and can also be used for the quick measurement of concrete slump in general concrete mixing stations. Background technique [0002] Workability refers to the property that the concrete mixture is easy to operate and obtain uniform and dense concrete. The workability of fresh concrete determines whether the concrete can be constructed normally to meet the performance requirements after hardening. Slump is an important index to measure the workability of concrete slurry. This index reflects whether the concrete is easy to construct and operate and has uniform and dense performance. Specifically, it is to ensure the normal progress of construction. Taking the wet shotcrete technology popularized and applied in mine road...

AI Technical Summary

Problems solved by technology

[0004] At the concrete preparation site, adopting the standard method to measure the slump has the following disadvantages: (1) this method needs two people to assist in the determination of the slump; (2) the test process of this method is complicated and the test cycle is long; (3) ) During the testing process of this method, many auxiliary tools are needed

In general concrete mixing plants, there is often only one concrete mixer. At the same time, it is extremely unrealistic for concrete mixing plants to frequently use standard methods to measure slump to control the workability of concrete slurry.

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