CN211856588U - A kind of concrete mixture performance test device - Google Patents

Abstract

The utility model belongs to the technical field of check out test set, concretely relates to concrete mixture performance test device, including base and a slump section of thick bamboo, wherein the slump section of thick bamboo adopts ferromagnetic material preparation, and base upper surface one side can be dismantled and be connected with vertical ascending support, and the cover is equipped with the sliding block on the support, and sliding block one side is worn to be equipped with and is used for the tight part of support of fixed sliding block, and the opposite side rotates and is connected with the telescopic link, and portable range unit that is provided with on the telescopic link, the base is inside evenly to inlay and be equipped with a plurality of being used for adsorbing the electro-magnet of a slump section of thick bamboo, base upper surface demountable installation have level. The utility model discloses guaranteed the level nature of closely knit nature and device between a slump section of thick bamboo and base, for concrete mixture slump and extension test provide a simple structure, convenient operation, low cost's novel test device, promote easily, have higher practical value.

Description

A kind of concrete mixture performance test device

technical field

The utility model belongs to the technical field of testing equipment, in particular to a performance testing device for concrete mixtures.

Background technique

The slump and expansion of ordinary concrete refer to the slump height of the concrete mixture under the action of its own weight and the diameter of the expansion of the concrete mixture after the slump, respectively. The slump and expansion characterize the workability of concrete. The test methods for the slump and expansion of concrete mixtures are published in "Standards for Performance Tests of Ordinary Concrete Mixtures" GB/T 50080-2016.

The original test device uses "Concrete slump instrument" JG/T 248, which consists of a slump cylinder, a measuring ruler, a flat ruler, a bottom plate, a tamper and a funnel. The slump cylinder passes through the foot pedals on both sides. Fixed on the level ground, there are human factors, and it is difficult to ensure the compactness between the slump cylinder and the ground; the steel ruler measures the height difference between the cylinder height and the highest point of the concrete specimen after the slump, which consumes manpower and has low precision; The unevenness of the bottom plate of the instrument will directly affect the test accuracy of slump and expansion; there are problems such as errors in the center of the bottom plate by placing the slump cylinder with the naked eye. Therefore, a test with simple structure, convenient operation and low cost is developed. device is particularly necessary.

Utility model content

In view of the deficiencies in the prior art, the purpose of this utility model is to provide a concrete mixture performance test device, which ensures the compactness of the slump cylinder and the horizontality of the device, and provides the slump and The expansion degree test provides a new detection and test device with simple structure, convenient operation and low cost.

To achieve the above purpose, the present invention provides the following technical solutions to solve the above-mentioned technical problems:

A concrete mixture performance test device, comprising a base and a slump cylinder, the slump cylinder is made of ferromagnetic material, a vertical upward support is detachably installed on one side of the upper surface of the base, and the support is covered with There is a sliding block, one side of the sliding block is equipped with a pressing member for fixing the sliding block, and the other side is rotatably connected with a telescopic rod, the telescopic rod is movably provided with a distance measuring device, and the interior of the base is uniform Several electromagnets for adsorbing the slump cylinder are embedded, the upper surface of the base is detachably installed with a level measuring device, and the four corners of the lower surface are provided with adjusting feet. Through the set electromagnet, the ferromagnetic slump tube can be attracted by power on, and the slump tube can be separated when power off, which ensures the compactness of the slump tube and avoids the defect of uneven force and labor wasting caused by human stepping on it. The level measuring device provided is used to confirm whether the device is placed horizontally. With the set adjustment feet, it realizes the expansion of the application environment of the device, and also avoids the uneven placement of the bottom seat, which will directly affect the slump and expansion. Test accuracy.

Preferably, a circular mark for determining the placement position of the slump cylinder is provided at the center of the base, and a number of scale lines extending from the center are arranged at uniform intervals along the surface of the base. By placing the slump cylinder with the naked eye, there is an error in the center of the base, as well as the inconvenience and complexity of later measurement, and the efficiency of the test is improved.

Preferably, the circular mark is equal to the circle diameter of the bottom surface of the slump drum.

Preferably, a notch penetrating the upper and lower surfaces of the sliding block and the telescopic rod is provided with a notch, the two side walls of the middle part of the notch are provided with a fixed shaft, and one end of the telescopic rod is sleeved on the fixed shaft, and The telescopic rod can be rotated and fixed by 180 degrees in the vertical plane through the adjustable fastening parts arranged on the side wall of the sliding block. Through this design, not only the length of the telescopic rod can be adjusted, but also the telescopic rod can be rotated by 180° with the bracket as the axis to adjust the position of the distance measuring device and the convenience of measurement.

Preferably, the adjustable fastening components are bolts.

Preferably, the abutting member is a bolt.

Preferably, the ranging device is an infrared ranging sensor, and the level measuring device is a horizontal bubble meter.

Preferably, a timer is installed on the bracket, and both the timer and the electromagnet are electrically connected to a controlled switch arranged on the base to realize connection or disconnection with an external power supply.

Compared with the prior art, the utility model has the following beneficial effects:

The creative design of the utility model not only ensures the compactness between the slump cylinder and the base and the levelness of the device, but also improves the test accuracy of the slump and expansion, accelerates the speed of the whole test, reduces the manual labor, and effectively The test efficiency is improved, the test cost is reduced, the utility model has the advantages of simple structure, convenient operation and low price, and has high practical value.

Description of drawings

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the structural representation of a kind of concrete mixture performance test device provided by the utility model;

Fig. 2 is a top view of the upper surface structure of the base of a concrete mixture performance test device provided by the utility model;

Fig. 3 is a partial enlarged structural schematic diagram of the connection between the telescopic rod and the sliding block of a concrete mixture performance test device provided by the utility model.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that certain names are used in the description and claims to refer to specific components. It should be understood that those of ordinary skill in the art may refer to the same component by different names. The description and claims of the present application do not take the difference in name as a way to distinguish components, but take the substantial difference in function of the components as a criterion for distinguishing components. As used in the specification and claims of this application, "comprising" or "including" is an open-ended term, which should be interpreted as "including but not limited to" or "including but not limited to". The embodiments described in the detailed description section are preferred embodiments of the present invention, and are not intended to limit the scope of the present invention.

As shown in Figures 1 to 3, this embodiment provides a performance test device for concrete mixtures, including a base 1 and a slump cylinder 2. The slump cylinder 2 is made of ferromagnetic material, and the upper surface of the base 1 can be A vertical upward bracket 3 is disassembled and installed, a sliding block 4 is sleeved on the bracket 3, a pressing member 5 for fixing the sliding block 4 is pierced on one side of the sliding block 4, and a telescopic rod 6 is rotatably connected on the other side. A distance measuring device 7 is disassembled on the rod 6, a number of electromagnets 8 for adsorbing the slump cylinder 2 are evenly embedded in the base 1, a horizontal measuring device 9 is detachably installed on the upper surface of the base 1, and the four corners of the lower surface are detachably installed. Adjusting feet 10 are arranged there. The detachable connection or arrangement in this embodiment may be any one or more of detachable connections such as screw connection and slot-type connection, which will not be described in detail here.

In this embodiment, the center of the base 1 is provided with a circular mark 11 for determining the placement position of the slump cylinder 2, and along the surface of the base 1, a number of scale lines 12 extending from the center are evenly spaced, wherein the circle The shape mark 11 is equal to the circle diameter of the bottom surface of the slump cylinder 2, and the graduation value of the scale line is set to 1 mm.

In this embodiment, a slot 13 penetrating the upper and lower surfaces of the sliding block 4 and the telescopic rod 6 is formed on the side, and a fixed shaft 17 is passed through the two side walls of the middle of the slot 13 . The telescopic rod 6 One end is sleeved on the fixed shaft 17 , and the telescopic rod 6 can be rotated and fixed by 180 degrees on the vertical plane through the adjustable fastening member 14 disposed on the side wall of the sliding block 4 .

In this embodiment, the adjustable fastening member 14 and the abutting member 5 are both bolts. Of course, other components capable of switching between tightening and loosening can also be used.

In this embodiment, the distance measuring device 7 is an infrared distance measuring sensor, and the level measuring device 9 is a horizontal bubble meter. The bubble meter has a simple structure and low cost. Of course, other more advanced and complex level measuring devices can also be used.

In this embodiment, a timer 15 is installed on the bracket, and both the timer 15 and the electromagnet 8 are electrically connected to a controlled switch 16 arranged on the base to realize connection or disconnection with an external power supply, wherein The timer 15 and the electromagnet 8 both need to be powered on to work, and are controlled by humans when they work. The specific wiring method of this electrical connection, the position of the controlled switch, and the method of connecting the external power supply have no substance to the present utility model. The above meanings are known to those skilled in the art, and therefore will not be repeated.

The specific working process of this embodiment is as follows:

Place the base 1 on the level ground, adjust the level measuring device 9, that is, the level bubble meter, adjust the adjusting foot 10 until the bubble is in the center, continue to adjust the adjustable fastening part 14, and adjust the telescopic rod 6 to another place; slump the cylinder 2. The inner wall and bottom plate should be moistened with clear water, and the slump cylinder 2 should be placed on the circular mark 11 of the base 1, and the controlled switch 16 corresponding to the electromagnet 8 should be turned on, so that the slump cylinder 2 will be adsorbed on the panel of the base 1. The concrete mixture pattern is evenly placed into the slump cylinder 2 in three layers. For each layer of concrete mixture, the tamping rod is evenly inserted and tamped 25 times from the edge to the center in a spiral shape. The height of the concrete mixture sample is about one-third of the height of the cylinder. When inserting the bottom layer, the tamper should penetrate the entire depth. When inserting the second layer and the top layer, the tamper should penetrate the surface of this layer to the next layer. , after the top layer is inserted and pounded, remove the charging funnel, scrape off the excess concrete mixture, and smooth it along the mouth of the cylinder. After removing the concrete on the base panel on the side of the cylinder, turn off the controlled switch 16 corresponding to the electromagnet Lift the slump cylinder 2 smoothly and place it next to the sample, turn on the timer 15, and when the sample does not continue to slump or the slump time reaches 30s, adjust the adjustable fastening part 14, put the telescopic rod 6 Move to the parallel position of the vertical diameter of the panel of the base 1 and the bracket 3, adjust the abutting member 5 and adjust the position of the distance measuring sensor 7 by adjusting the length of the telescopic rod 6 to the position above the highest point of the slumped concrete, start the distance measuring sensor 7, read the slump For the drop h, the concrete expansion degree L0 can be directly read through the scale line 12 on the panel of the base 1 .

The slump and expansion loss over time test should be carried out according to the following steps: put all concrete mixture samples into plastic buckets or metal buckets that are not corroded by cement slurry, seal them with bucket lids or plastic films, and let them stand for After stirring and adding water, start the timer for 15 hours. After 60 minutes, repeatedly measure the slump h _60min and the expansion degree L _60min , respectively calculate the initial slump h, the expansion degree value L ₀ and the 60min slump h _60min , and the expansion degree difference value L _60min , the 60min concrete slump and expansion degree loss over time can be obtained, the concrete standing time can be adjusted according to the project requirements, and the concrete slump loss over time should be measured and calculated according to the actual standing time.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention may be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (8)

1. The utility model provides a concrete mixture capability test device, includes base and a slump section of thick bamboo, the slump section of thick bamboo adopts ferromagnetic material preparation, its characterized in that: the utility model discloses a collapse cylinder, including base upper surface, the support of being connected with vertical ascending, the cover is equipped with the sliding block on the support, sliding block one side is worn to be equipped with and is used for fixed sliding block to support tight part, and the opposite side rotates and is connected with the telescopic link, can dismantle on the telescopic link and be provided with range unit, the base is inside evenly to be inlayed and to be equipped with a plurality of being used for adsorbing the electro-magnet of collapse cylinder, surface detachable mounting is equipped with leveling device, lower surface four corners and is.

2. The concrete mixture performance test device of claim 1, characterized in that: the base center department is provided with the circular mark that is used for confirming the position is placed to the slump cone, is provided with a plurality of scale marks that extend outwards from the center along base surface even interval.

3. The concrete mixture performance test device of claim 2, characterized in that: the diameter of the circle mark is equal to that of the bottom circle of the slump cone.

4. The concrete mixture performance test device of claim 1, characterized in that: the sliding block is connected one side with the telescopic link and is seted up the notch that link up its upper and lower surface, the fixed axle is worn to be equipped with by notch middle part both sides wall, a telescopic link pot head is established on the fixed axle to through setting up the adjustable fastening part of sliding block lateral wall realizes that the telescopic link is rotatory and fixed at vertical plane 180 degrees.

5. The concrete mixture performance test device of claim 4, characterized in that: the adjustable fastening part is a bolt.

6. The concrete mixture performance test device of claim 1, characterized in that: the abutting part is a bolt.

7. The concrete mixture performance test device of claim 1, characterized in that: the distance measuring device is an infrared distance measuring sensor, and the horizontal measuring device is a horizontal bubble instrument.

8. The concrete mixture performance test device of claim 1, characterized in that: the support is provided with a timer, and the timer and the electromagnet are electrically connected with a controlled switch arranged on the base to realize connection or disconnection with an external power supply.

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