CN205958576U - Concrete slump test device - Google Patents

Abstract

Concrete slump test device sets gradually barrel, well barrel, barrel and bottom plate down including top -down, go up barrel, well barrel and down the appearance of barrel all be round platform shape, go up barrel, well barrel and down the barrel wall thickness and high homogeneous phase with, go up barrel, well barrel and barrel coaxial line setting down, the generating line and the barrel generating line coincidence down of going up the generating line of barrel, well barrel are gone up the outer wall of the outer wall of barrel, well barrel and the outer wall of lower barrel and all are equipped with two handles, the utility model has the advantages of being simple in structure and convenient in operation, load sample convenience, convenient to detach.

Description

Concrete slump test device

technical field

The utility model belongs to the technical field of concrete testing equipment, in particular to a slump device which is convenient for filling samples.

Background technique

Slump mainly refers to the plasticizing performance and pumpability of concrete, which is a quantitative index to measure its degree (plasticization and pumpability), and is used to judge whether the construction can proceed normally. Concrete slump is mainly affected by changes in gradation, water content, and weighing deviation of horizontal devices. The amount of admixtures that is easily overlooked is also the temperature of cement. Slump refers to the workability of concrete, specifically to ensure the normal progress of construction, including water retention, fluidity and cohesion of concrete. Workability means that the concrete mixture is easy to operate (mixing, transportation, pouring, tamping), and can obtain uniform and dense concrete properties. Workability is a comprehensive technical property, including the definitions of water retention, fluidity and cohesion. The workability is mainly affected by water consumption, water-cement ratio, sand rate, cement type, aggregate condition, time and temperature, admixture and other aspects.

At present, a slump meter is usually used to detect the slump of concrete, but the existing slump meter has the following defects:

(1) During the slump test, the concrete mixture needs to be loaded into the slump cylinder in three layers, and the filling height of each layer accounts for about one-third of the cylinder height. Insert and tamp 25 times from the edge of the inner wall of the slump cylinder to the center without any impact, but because the slump cylinder itself has a certain depth, the overall shape of the slump cylinder is frustum-shaped, so when filling each layer of concrete When mixing the mixture, because the slump cylinder is too deep, it is inconvenient to tamp the concrete, which increases the difficulty of the test;

(2) At least three bolts are required for fixing between the existing bottom plate and the slump cylinder, and the disassembly and fastening process of the bolts is cumbersome, and a wrench tool is required for disassembly and fastening, but in the threaded holes and The distance between the outer walls of the slump cylinder is very close, which makes it inconvenient for the wrench to tighten the bolts;

(3) When measuring the height difference between the height of the cylinder and the highest point of the concrete cone after the collapse, it is necessary to find another ruler for measurement, and the reading of the ruler is not intuitive, and the reading error is large.

Utility model content

In order to solve the deficiencies in the prior art, the utility model provides a concrete slump test device with simple structure, convenient operation, convenient sample filling and easy disassembly.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: the concrete slump test device includes an upper cylinder, a middle cylinder, a lower cylinder and a bottom plate arranged sequentially from top to bottom, and the upper cylinder, the middle cylinder and the The shape of the lower cylinder is conical, the wall thickness and height of the upper cylinder, the middle cylinder and the lower cylinder are the same, the upper cylinder, the middle cylinder and the lower cylinder are arranged on the same axis, and the busbar of the upper cylinder 1. The busbar of the middle cylinder and the busbar of the lower cylinder overlap, and there are two handles on the outer wall of the upper cylinder, the outer wall of the middle cylinder and the outer wall of the lower cylinder; the bottom of the lower cylinder passes through at least three sets of pressing mechanisms Fixed on the upper surface of the bottom plate, the bottom inner wall of the middle cylinder is threadedly connected with the top outer wall of the lower cylinder, and the bottom inner wall of the upper cylinder is threaded with the top outer wall of the middle cylinder;

One side of the bottom plate is vertically fixed with a slide bar, and the slide bar is provided with a scale along its length direction. The slide bar is covered with a collar, and an indicator rod is fixed on the collar, and the indicator bar is slidably connected to the slide bar through the collar. The indicating rod is arranged horizontally and is a multi-section telescopic structure.

There is a pressure ring on the outer edge of the bottom of the lower cylinder. The compression mechanism includes a curved pressure rod and a torsion spring. One end of the pressure rod is hinged on the upper surface of the bottom plate through a pin shaft. The torsion spring is sleeved on the pin shaft. The other end of the pressure rod One end is crimped on the pressure ring under the action of the torsion spring.

A rubber sealing layer is arranged on the bottom surface of the lower cylinder body.

By adopting the above-mentioned technical scheme, the utility model has the following beneficial effects: when carrying out the concrete slump test, the specific method of filling the concrete sample is as follows: firstly, the lower cylinder is placed at a suitable position on the bottom plate, and then the pressing bar is moved and Press the pressure rod on the pressure ring at the bottom of the lower cylinder, then fill the concrete sample into the lower cylinder, and use a tamping rod to insert and tamp 25 times along the helical line from the edge of the inner wall of the lower cylinder to the center. No impact is allowed during the insertion and tamping process, and then Thread the middle cylinder to the top of the lower cylinder, then fill the concrete sample into the middle cylinder in the same way, and use a tamping rod to insert and tamp 25 times along the helical line from the edge of the inner wall of the middle cylinder to the center, and do not impact during the insertion and tamping process; After filling the middle cylinder, screw the upper cylinder to the middle cylinder, fill the concrete sample in the upper cylinder in the same way, and use a tamping rod to insert and pound 25 times along the spiral line from the edge of the inner wall of the upper cylinder to the center , no impact during the inserting and tamping process, so far the filling of the concrete sample is completed; compared with the traditional method of filling the concrete sample in the slump cylinder, the utility model divides the concrete sample into three layers and sequentially loads the concrete sample in the upper cylinder, the middle In the cylinder and the lower cylinder, it will not be inconvenient to tamp the concrete sample due to the depth of the upper cylinder, the middle cylinder and the lower cylinder, which indirectly reduces the difficulty of the sample;

The bottom of the lower cylinder is fixed on the bottom plate through the pressing mechanism, which can quickly fix or disassemble the lower cylinder, and connect with the existing bolts, which is more convenient and fast. The bottom surface of the lower cylinder is equipped with a rubber sealing layer. The sealing layer can prevent the concrete from overflowing from the gap between the bottom plate and the bottom of the lower cylinder when the tamping rod is tamping the concrete in the slump cylinder;

When reading the concrete slump value, there is no need to find a scale for reading. The slide bar of the utility model is provided with a scale. When reading the concrete slump value, you only need to move the sleeve along the slide bar. Align the indicating end of the indicating rod with the apex of the collapsed concrete cone, and then you can read the scale on the sliding rod at the collar, which is easier to read than the existing re-finding scale, and the reading is accurate high degree.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is an enlarged view of I in Fig. 1 .

detailed description

As shown in Fig. 1 and Fig. 2, the concrete slump test device of the present utility model comprises that upper cylinder body 1, middle cylinder body 2, lower cylinder body 3 and base plate 4 are arranged in sequence from top to bottom, and upper cylinder body 1, Both the middle cylinder body 2 and the lower cylinder body 3 are frustum-shaped in shape, the wall thickness and height of the upper cylinder body 1, the middle cylinder body 2 and the lower cylinder body 3 are all the same, The body 3 is coaxially arranged, the busbar of the upper cylinder 1, the busbar of the middle cylinder 2 and the busbar of the lower cylinder 3 coincide, and the outer wall of the upper cylinder 1, the outer wall of the middle cylinder 2 and the outer wall of the lower cylinder 3 are all set There are two handles 5; the bottom of the lower cylinder 3 is fixed on the upper surface of the bottom plate 4 through at least three sets of pressing mechanisms, the inner wall of the bottom of the middle cylinder 2 is threadedly connected with the top outer wall of the lower cylinder 3, and the bottom of the upper cylinder 1 The bottom inner wall is threadedly connected with the top outer wall of the middle cylinder 2;

One side of the bottom plate 4 is vertically fixed with a slide bar 6, and the slide bar 6 is provided with a scale 7 along its length, and the slide bar 6 is provided with a collar 8, and an indicator rod 9 is fixed on the collar 8, and the indicator bar 9 passes through the The collar 8 is slidably connected to the slide rod 6, and the indicator rod 9 is arranged horizontally and is a multi-section telescopic structure.

The outer edge of the bottom of the lower cylinder 3 is provided with a pressure ring 10. The compression mechanism includes a curved pressure rod 11 and a torsion spring 12. One end of the pressure rod 11 is hinged on the upper surface of the bottom plate 4 through a pin 13. The torsion spring 12 is sleeved on the On the pin shaft 13 , the other end of the pressing rod 11 is crimped on the pressing ring 10 under the action of the torsion spring 12 .

A rubber sealing layer 14 is provided on the bottom surface of the lower cylinder body 3 .

When carrying out the concrete slump test, the specific method of filling the concrete sample is: first place the lower cylinder body 3 on the proper position of the bottom plate 4, then move the pressure rod 11 and press the pressure rod 11 on the lower cylinder body 3 On the pressure ring 10 at the bottom, then fill the concrete sample in the lower cylinder 3, and use a tamping rod to insert and tamp 25 times along the helical line from the edge of the inner wall of the lower cylinder 3 to the center. 2 is threaded on the top of the lower cylinder 3, and then similarly fill the concrete sample in the middle cylinder 2, and use a tamping rod to insert and tamp 25 times along the spiral line from the edge of the inner wall of the middle cylinder 2 to the center, without impact After filling the middle cylinder body 2, the upper cylinder body 1 is screwed on the middle cylinder body 2, and the concrete sample is filled in the upper cylinder body 1 in the same way, and the inner wall of the upper cylinder body 1 is moved along the spiral line with a tamping rod. Insert and tamp 25 times from the edge to the center, and no impact is allowed during the tamping process, so far the filling of the concrete sample is completed; compared with the traditional method of filling the concrete sample in the slump cylinder, the utility model divides the concrete sample into three layers Filled in the upper cylinder 1, middle cylinder 2 and lower cylinder 3, it will not be inconvenient to tamp the concrete sample due to the depth of the upper cylinder 1, middle cylinder 2 and lower cylinder 3, and indirectly reduce the Increased the difficulty of the sample;

The bottom of the lower cylinder 3 is fixed on the bottom plate 4 through a pressing mechanism, which can quickly fix or disassemble the lower cylinder 3, and connect with the existing bolts, which is more convenient and fast. The bottom surface of the lower cylinder 3 is provided with rubber The sealing layer 14, the rubber sealing layer 14 can prevent the concrete from overflowing from the gap between the base plate 4 and the bottom of the lower cylinder body 3 during the process of the tamping rod compacting the concrete in the slump cylinder;

When reading the concrete slump value, there is no need to find a scale for reading. The slide bar 6 of the present utility model is provided with a scale 7. When reading the concrete slump value, you only need to move along the slide bar. 6. Move the collar 8 so that the indication end of the indicator rod 9 is aligned with the conical apex of the collapsed concrete, and the scale 7 on the slide bar 6 at the 8 places of the collar can be read, and the existing scale can be read with the existing scale again. It is simple and has high accuracy in reading degrees.

This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model belong to the technology of the utility model. protection scope of the program.

Claims (3)

1. The concrete slump test device is characterized in that: it includes an upper cylinder, a middle cylinder, a lower cylinder and a bottom plate arranged in sequence from top to bottom, and the shapes of the upper cylinder, the middle cylinder and the lower cylinder are all round. Table shape, the wall thickness and height of the upper cylinder, the middle cylinder and the lower cylinder are the same, the upper cylinder, the middle cylinder and the lower cylinder are arranged on the same axis, the busbar of the upper cylinder, the busbar of the middle cylinder and the lower cylinder The busbars of the cylinder coincide, and there are two handles on the outer wall of the upper cylinder, the outer wall of the middle cylinder and the outer wall of the lower cylinder; the bottom of the lower cylinder is fixed on the upper surface of the bottom plate by at least three sets of pressing mechanisms, and the middle cylinder The bottom inner wall of the body is screwed to the top outer wall of the lower cylinder, and the bottom inner wall of the upper cylinder is threaded to the top outer wall of the middle cylinder; One side of the bottom plate is vertically fixed with a slide bar, and the slide bar is provided with a scale along its length direction. The slide bar is covered with a collar, and an indicator rod is fixed on the collar, and the indicator bar is slidably connected to the slide bar through the collar. The indicating rod is arranged horizontally and is a multi-section telescopic structure. 2. The concrete slump test device according to claim 1, characterized in that: the bottom outer edge of the lower cylinder is provided with a compression ring, the compression mechanism includes a curved compression rod and a torsion spring, and one end of the compression rod passes through a pin The shaft is hinged on the upper surface of the bottom plate, the torsion spring is sleeved on the pin shaft, and the other end of the pressure rod is crimped on the pressure ring under the action of the torsion spring. 3. The concrete slump test device according to claim 2, characterized in that: the bottom surface of the lower cylinder is provided with a rubber sealing layer.