CN113759102B - Concrete slump detection device for bridge construction - Google Patents
Concrete slump detection device for bridge construction Download PDFInfo
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- CN113759102B CN113759102B CN202110996442.6A CN202110996442A CN113759102B CN 113759102 B CN113759102 B CN 113759102B CN 202110996442 A CN202110996442 A CN 202110996442A CN 113759102 B CN113759102 B CN 113759102B
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- concrete slump
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- 238000001514 detection method Methods 0.000 title claims abstract description 51
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 238000004804 winding Methods 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims description 13
- 230000009897 systematic effect Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 43
- 238000007689 inspection Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
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- Health & Medical Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Ceramic Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a concrete slump detection device for bridge construction. The concrete slump detection device for bridge construction includes: a base; the long body box is fixedly arranged at the top of the base; the shell is fixedly arranged at one side of the long body box; the rotating shaft is rotatably arranged in the shell, and one end of the rotating shaft extends out of the shell; the first conical gear is fixedly sleeved on the rotating shaft; the worm is rotatably arranged in the shell; the second bevel gear is fixedly arranged at the bottom end of the worm, and the first bevel gear is meshed with the second bevel gear; the winding wheel rotates and is installed in the long body box. The concrete slump detection device for bridge construction has the advantages that the detection tools are integrated into a whole, so that the detection of the concrete slump is more systematic, and the detection result is more accurate.
Description
Technical Field
The invention relates to the technical field of concrete detection, in particular to a concrete slump detection device for bridge construction.
Background
In bridge construction, in order to ensure construction quality, slump detection is required, the purpose of the detection is to know the fluidity and cohesiveness of concrete, at present, when the slump detection is carried out on concrete, concrete mixture is required to be filled into a slump cylinder according to a specified method, after the concrete overflowed from the top of the slump cylinder is scraped, the slump cylinder is lifted vertically upwards to separate the slump cylinder from the concrete, then the slump cylinder is put aside, at this time, the slump is generated by the concrete mixture due to dead weight, and then the slump size of the concrete mixture is measured by a measuring ruler.
However, the conventional inspection tools are numerous and messy, and when the inspection work is performed, the inspection environment is required to be high, and the inspection environment cannot be systematically operated, so that errors are likely to occur in the operation process, particularly when the slump barrel is lifted from the concrete mixture, the slump of the concrete mixture is likely to be disturbed due to poor manual operation stability, and the inspection result is affected, so that it is necessary to provide the concrete slump inspection device for bridge construction, and the technical problem is solved.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the concrete slump detection device for bridge construction, which integrates detection tools into a whole, so that the detection of the concrete slump is more systematic, and the detection result is more accurate.
In order to solve the technical problems, the invention provides a concrete slump detection device for bridge construction, comprising: a base; the long body box is fixedly arranged at the top of the base; the shell is fixedly arranged at one side of the long body box; the rotating shaft is rotatably arranged in the shell, and one end of the rotating shaft extends out of the shell; the first conical gear is fixedly sleeved on the rotating shaft; the worm is rotatably arranged in the shell; the second bevel gear is fixedly arranged at the bottom end of the worm, and the first bevel gear is meshed with the second bevel gear; the winding wheel is rotatably arranged in the long body box, and one end of the winding wheel extends into the shell; the worm wheel is fixedly arranged at one end of the winding wheel, and the worm is meshed with the worm wheel; the lifting rope is wound on the winding wheel; the sliding block is slidably arranged in the long body box, and the bottom end of the lifting rope is fixedly connected with the top of the sliding block; the connecting arm is fixedly arranged on one side of the sliding block, and one end of the connecting arm extends out of the long body box; the slump barrel is fixedly arranged at one end of the connecting arm; the rotating table is rotatably arranged at the top of the base, and the bottom of the slump barrel is contacted with the top of the rotating table; the sleeve is fixedly arranged at the top of the rotating table; the hollow tube is rotatably arranged in the sleeve, and the top end of the hollow tube extends out of the sleeve; the telescopic rod is slidably arranged in the hollow pipe, and the top end of the telescopic rod extends out of the hollow pipe; the parallel ruler is fixedly arranged at the top end of the telescopic rod; the measuring ruler is slidably arranged on the parallel ruler.
Preferably, a placing cylinder is fixedly arranged on one side of the long body box, and a tamper is placed in the placing cylinder.
Preferably, two sliding rods are fixedly arranged in the long body box, and the sliding blocks are in sliding connection with the two sliding rods.
Preferably, a first crank is fixedly arranged at one end of the rotating shaft.
Preferably, an annular groove is formed in the top of the base, a rotating ring is slidably mounted in the annular groove, and the top of the rotating ring extends out of the annular groove and is fixedly connected with the bottom of the rotating table.
Preferably, a limit groove is formed in one side of the telescopic rod, a limit block is slidably mounted in the limit groove, and one side of the limit block extends out of the limit groove and is fixedly connected with one side inner wall of the hollow pipe.
Preferably, a locking screw is mounted on the sleeve in a threaded manner, and one end of the locking screw extends into the sleeve and contacts one side of the hollow tube.
Preferably, four universal wheels which are in rectangular distribution are fixedly arranged at the bottom of the base, connecting rods are fixedly arranged at two sides of the long body box, and the same push rod is fixedly arranged at the top ends of the two connecting rods.
Preferably, the L-shaped fixing frame is fixedly arranged on the base, the box body is fixedly arranged on the L-shaped fixing frame, the rotating rod is rotatably arranged in the box body, one end of the rotating rod extends out of the box body, the third bevel gear is fixedly arranged at the other end of the rotating rod, the driving rod is rotatably arranged in the box body, the fourth bevel gear is fixedly sleeved on the driving rod, the third bevel gear is meshed with the fourth bevel gear, the bottom end of the driving rod extends out of the box body and is fixedly provided with the cleaning brush, and the bottom of the cleaning brush is contacted with the top of the base.
Preferably, a second crank is fixedly arranged at one end of the rotating rod extending out of the box body.
Compared with the related art, the concrete slump detection device for bridge construction has the following beneficial effects:
the invention provides a concrete slump detection device for bridge construction, which is characterized in that a rotating shaft, a first conical gear, a worm, a second conical gear, a winding wheel, a worm wheel, a lifting rope, a sliding block and a connecting arm are matched, so that a slump cylinder can be stably taken down from a concrete mixture, the slump cylinder has less influence on the concrete mixture in the taking down process, the slump detection of the concrete mixture is more accurate, the concrete mixture and the slump cylinder can be opposite through a rotating table, the slump detection of the concrete mixture is more convenient through a measuring ruler, and meanwhile, the rotating table can enable the slump cylinder and the concrete mixture to be on the same horizontal line, and the precision of the concrete mixture measurement is ensured.
Drawings
FIG. 1 is a schematic diagram of a front cross-sectional structure of a first embodiment of a concrete slump detection device for bridge construction provided by the invention;
FIG. 2 is a schematic diagram of a first side cross-sectional structure of a first embodiment of a concrete slump detection device for bridge construction provided by the invention;
FIG. 3 is an enlarged schematic view of portion A shown in FIG. 2;
FIG. 4 is a schematic diagram of a second side view and cross section structure of a first embodiment of a concrete slump detection device for bridge construction provided by the invention;
fig. 5 is a schematic top view of a first embodiment of a slump detection device for bridge construction according to the present invention;
FIG. 6 is a schematic diagram of a cross-sectional side view of a second embodiment of a slump detection device for bridge construction according to the present invention;
fig. 7 is a schematic top view of a second embodiment of the slump detection device for bridge construction according to the present invention.
Reference numerals in the drawings: 1. a base; 2. a long body box; 3. a housing; 4. a rotating shaft; 5. a first bevel gear; 6. a worm; 7. a second bevel gear; 8. a winding wheel; 9. a worm wheel; 10. a hanging rope; 11. a slide block; 12. a connecting arm; 13. a slump barrel; 14. a rotating table; 15. a sleeve; 16. a hollow tube; 17. a telescopic rod; 18. a parallel ruler; 19. a measuring ruler; 20. an L-shaped fixing frame; 21. a case body; 22. a rotating lever; 23. a third bevel gear; 24. a drive rod; 25. a fourth bevel gear; 26. and (5) cleaning the brush.
Detailed Description
The invention will be further described with reference to the drawings and embodiments.
First embodiment:
referring to fig. 1 to 5 in combination, in a first embodiment of the present invention, a concrete slump detection device for bridge construction includes: a base 1; the long body box 2 is fixedly arranged at the top of the base 1; a housing 3, wherein the housing 3 is fixedly arranged at one side of the long body box 2; a rotating shaft 4, wherein the rotating shaft 4 is rotatably installed in the housing 3, and one end of the rotating shaft 4 extends out of the housing 3; the first conical gear 5 is fixedly sleeved on the rotating shaft 4; the worm 6 is rotatably arranged in the shell 3, and the worm 6 and the worm wheel 9 are matched, so that the rolling wheel 8 can be rotated, and self-locking can be performed after the rotation is finished, so that the slump barrel 13 can be retained in a raised position after being separated from the concrete mixture; a second bevel gear 7, wherein the second bevel gear 7 is fixedly arranged at the bottom end of the worm 6, and the first bevel gear 5 is meshed with the second bevel gear 7; the winding wheel 8 is rotatably arranged in the long body case 2, one end of the winding wheel 8 extends into the shell 3, and the winding wheel 8 can realize lifting work of the slump barrel 13 by winding or lowering the lifting rope 10, so that the slump barrel 13 can be stably separated from the concrete mixture; the worm wheel 9 is fixedly arranged at one end of the winding wheel 8, and the worm 6 is meshed with the worm wheel 9; the lifting rope 10 is wound on the winding wheel 8; the sliding block 11 is slidably arranged in the long body box 2, and the bottom end of the lifting rope 10 is fixedly connected with the top of the sliding block 11; the connecting arm 12 is fixedly arranged on one side of the sliding block 11, and one end of the connecting arm 12 extends out of the long body box 2; a slump barrel 13, wherein the slump barrel 13 is fixedly arranged at one end of the connecting arm 12, a funnel is slidably arranged on the slump barrel 13, and when the concrete mixture needs to be poured into the slump barrel 13, the funnel can increase the receiving area of the slump barrel 13, so that the concrete mixture can be conveniently poured; the rotating table 14 is rotatably arranged at the top of the base 1, the bottom of the slump cylinder 13 is contacted with the top of the rotating table 14, and the rotating table 14 not only ensures that the concrete mixture has a stable and flat detection environment, but also can conveniently change the position of the concrete mixture; a sleeve 15, wherein the sleeve 15 is fixedly arranged at the top of the rotating table 14; a hollow tube 16, wherein the hollow tube 16 is rotatably installed in the sleeve 15, and the top end of the hollow tube 16 extends out of the sleeve 15; a telescopic rod 17, wherein the telescopic rod 17 is slidably arranged in the hollow tube 16, and the top end of the telescopic rod 17 extends out of the hollow tube 16; the parallel ruler 18 is fixedly arranged at the top end of the telescopic rod 17; the measuring ruler 19 is slidably arranged on the parallel ruler 18, the measuring ruler 19 and the parallel ruler 18 are matched to detect the height difference between the concrete mixture and the slump barrel 13, so that the slump size of the concrete mixture is measured, meanwhile, the lifting ring is arranged at the top of the measuring ruler 19, the measuring ruler 19 can be limited, and meanwhile, the lifting of the measuring ruler 19 is more convenient.
One side fixed mounting of long body case 2 has a placement section of thick bamboo, place the stick in the placement section of thick bamboo, the detection personnel when detecting concrete can need to stab the stick with the stick to insert or beat the concrete mixture sometimes to this cohesiveness of knowing the concrete mixture.
Two sliding bars are fixedly arranged in the long body box 2, the sliding blocks 11 are connected with the two sliding bars in a sliding mode, and the sliding bars and the sliding blocks 11 are matched to enable the slump barrel 13 to be more stable when being separated from the concrete mixture.
One end of the rotating shaft 4 is fixedly provided with a first crank, and the rotating shaft 4 is more convenient and labor-saving to rotate through the first crank.
An annular groove is formed in the top of the base 1, a rotating ring is slidably mounted in the annular groove, the top of the rotating ring extends out of the annular groove and is fixedly connected with the bottom of the rotating table 14, and the annular groove and the rotating ring are matched to improve the stress area of the rotating table 14, so that the rotating table 14 is stable in rotation.
A limit groove is formed in one side of the telescopic rod 17, a limit block is slidably mounted in the limit groove, one side of the limit block extends out of the limit groove and is fixedly connected with one side inner wall of the hollow pipe 16, the limit groove and the limit block are matched to limit the telescopic range of the telescopic rod 17, and the telescopic rod 17 is prevented from being separated from the hollow pipe 16.
The sleeve 15 is provided with a locking screw in a threaded manner, one end of the locking screw extends into the sleeve 15 and contacts with one side of the hollow tube 16, and the locking screw can lock the hollow tube 16 to prevent the hollow tube 16 from rotating randomly.
Four universal wheels which are in rectangular distribution are fixedly arranged at the bottom of the base 1, connecting rods are fixedly arranged at two sides of the long box 2, the same push rod is fixedly arranged at the top ends of the two connecting rods, and the universal wheels and the push rod are matched to enable the slump detection device to move more conveniently.
In the invention, the following components are added:
when the slump detection of concrete is needed, concrete mixture is poured into a slump cylinder 13, then when the concrete mixture in the slump cylinder 13 is filled, the concrete mixture overflowed from the top of the slump cylinder 13 is scraped, then, a rotating shaft 4 is rotated through a first crank, the rotating shaft 4 drives a second bevel gear 7 to rotate through a first bevel gear 5, the second bevel gear 7 drives a worm 6 to rotate, under the action of the threads, the worm 6 drives a worm wheel 9 to rotate, the worm wheel 9 drives a winding wheel 8 to wind a lifting rope 10, the wound lifting rope 10 drives a sliding block 11 to rise, the sliding block 11 drives the slump cylinder 13 to rise through a connecting arm 12 until the slump cylinder 13 is separated from the concrete mixture at a slower speed, after the slump cylinder 13 is separated from the concrete mixture, a rotating table 14 is slowly rotated, the concrete mixture is rotated for one hundred eighty degrees to the opposite face of the slump cylinder 13, then the first crank is reversed to enable the slump cylinder 13 to fall back onto the rotating table 14, at this time, the slump cylinder 13 and the concrete mixture are on the same horizontal line, then the parallel ruler 18 and the telescopic rod 17 are lifted, when the height of the parallel ruler 18 is higher than the top end of the slump cylinder 13, the parallel ruler 18 is rotated to enable the two ends of the parallel ruler 18 to be on the same vertical line with the slump cylinder 13 and the concrete mixture, then the parallel ruler 18 is placed on the top end of the slump cylinder 13, at this time, the bottom end of the measuring ruler 19 on the parallel ruler 18 is contacted with the top of the concrete mixture, and the falling length of the measuring ruler 19 is the slump size of the concrete mixture, so that the detection work of the slump is completed.
Compared with the related art, the concrete slump detection device for bridge construction has the following beneficial effects:
through the cooperation of the rotating shaft 4, the first bevel gear 5, the worm 6, the second bevel gear 7, the winding wheel 8, the worm wheel 9, the lifting rope 10, the sliding block 11 and the connecting arm 12, the slump barrel 13 can be stably taken down from the concrete mixture, the influence of the slump barrel 13 on the concrete mixture in the taking down process is small, so that the slump detection of the concrete mixture is more accurate, the concrete mixture and the slump barrel 13 can be located at the opposite side through the rotating table 14, the slump detection is more convenient when the slump is carried out on the concrete mixture through the measuring ruler 19, and meanwhile, the rotating table 14 can enable the slump barrel 13 and the concrete mixture to be located at the same horizontal line, and the accuracy of the concrete mixture measurement is ensured.
Second embodiment:
based on the concrete slump detection device for bridge construction provided by the first embodiment of the application, the second embodiment of the application provides another concrete slump detection device for bridge construction. The second embodiment is merely a preferred manner of the first embodiment, and implementation of the second embodiment does not affect the implementation of the first embodiment alone.
A second embodiment of the present invention will be further described with reference to the drawings and embodiments.
Referring to fig. 6 and 7 in combination, the concrete slump detection device for bridge construction further includes: l shape mount 20, L shape mount 20 fixed mounting is on base 1, fixed mounting has box body 21 on the L shape mount 20, installs the support frame in the box body 21, and the support frame can play firm effect to dwang 22, dwang 22 is installed in the box body 21 internal rotation, the one end of dwang 22 extends to outside the box body 21, the other end fixed mounting of dwang 22 has third bevel gear 23, drive lever 24 is installed in the box body 21 internal rotation, fixed cover is equipped with fourth bevel gear 25 on the drive lever 24, third bevel gear 23 and fourth bevel gear 25 meshing, drive lever 24's bottom is extended to outside the box body 21 and fixed mounting has cleaning brush 26, the bottom of cleaning brush 26 contacts with the top of base 1, and the clearance hair on the cleaning brush 26 comprises the steel wire, and is stronger to the cleaning effect of concrete residue.
The end of the rotating rod 22 extending out of the box body 21 is fixedly provided with a second crank, and the second crank saves more labor when rotating the cleaning brush 26.
When slump detection of the concrete mixture is completed, the concrete mixture can be cleaned from the rotating table 14, and after the concrete mixture is cleaned, some residues still remain on the rotating table 14, at this time, the residues are rotated to the bottom of the cleaning brush 26, then the rotating table 14 is simply fixed by hand, the second crank is rotated by the other hand, the second crank drives the third bevel gear 23 to rotate through the rotating rod 22, the third bevel gear 23 drives the cleaning brush 26 to rotate through the fourth bevel gear 25, and the cleaning brush 26 starts to clean the residual concrete residues on the rotating table 14 through rotation, so that the rotating table 14 cannot influence the accuracy of next detection.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (10)
1. The utility model provides a concrete slump detection device for bridge construction which characterized in that includes:
a base;
the long body box is fixedly arranged at the top of the base;
the shell is fixedly arranged at one side of the long body box;
the rotating shaft is rotatably arranged in the shell, and one end of the rotating shaft extends out of the shell;
the first conical gear is fixedly sleeved on the rotating shaft;
the worm is rotatably arranged in the shell;
the second bevel gear is fixedly arranged at the bottom end of the worm, and the first bevel gear is meshed with the second bevel gear;
the winding wheel is rotatably arranged in the long body box, and one end of the winding wheel extends into the shell;
the worm wheel is fixedly arranged at one end of the winding wheel, and the worm is meshed with the worm wheel;
the lifting rope is wound on the winding wheel;
the sliding block is slidably arranged in the long body box, and the bottom end of the lifting rope is fixedly connected with the top of the sliding block;
the connecting arm is fixedly arranged on one side of the sliding block, and one end of the connecting arm extends out of the long body box;
the slump barrel is fixedly arranged at one end of the connecting arm;
the rotating table is rotatably arranged at the top of the base, and the bottom of the slump barrel is contacted with the top of the rotating table;
the sleeve is fixedly arranged at the top of the rotating table;
the hollow tube is rotatably arranged in the sleeve, and the top end of the hollow tube extends out of the sleeve;
the telescopic rod is slidably arranged in the hollow pipe, and the top end of the telescopic rod extends out of the hollow pipe;
the parallel ruler is fixedly arranged at the top end of the telescopic rod;
the measuring ruler is slidably arranged on the parallel ruler.
2. The concrete slump detection device for bridge construction according to claim 1, wherein a placement cylinder is fixedly installed at one side of the long body box, and a tamper is placed in the placement cylinder.
3. The concrete slump detection device for bridge construction according to claim 1, wherein two sliding bars are fixedly installed in the long body box, and the sliding bars are in sliding connection with the two sliding bars.
4. The concrete slump detection device for bridge construction according to claim 1, wherein a first crank is fixedly installed at one end of the rotation shaft.
5. The concrete slump detection device for bridge construction according to claim 1, wherein the top of the base is provided with an annular groove, a rotating ring is slidably installed in the annular groove, and the top of the rotating ring extends out of the annular groove and is fixedly connected with the bottom of the rotating table.
6. The concrete slump detection device for bridge construction according to claim 1, wherein a limit groove is formed in one side of the telescopic rod, a limit block is slidably installed in the limit groove, and one side of the limit block extends out of the limit groove and is fixedly connected with one side inner wall of the hollow pipe.
7. The concrete slump detecting device for bridge construction according to claim 1, wherein a locking screw is screw-mounted to the sleeve, and one end of the locking screw extends into the sleeve and contacts one side of the hollow tube.
8. The concrete slump detection device for bridge construction according to claim 1, wherein four rectangular universal wheels are fixedly arranged at the bottom of the base, connecting rods are fixedly arranged on two sides of the long body box, and the same push rod is fixedly arranged on the top ends of the two connecting rods.
9. The concrete slump detection device for bridge construction according to claim 1, wherein an L-shaped fixing frame is fixedly installed on the base, a box body is fixedly installed on the L-shaped fixing frame, a rotating rod is rotatably installed in the box body, one end of the rotating rod extends out of the box body, a third bevel gear is fixedly installed at the other end of the rotating rod, a driving rod is rotatably installed in the box body, a fourth bevel gear is fixedly sleeved on the driving rod, the third bevel gear is meshed with the fourth bevel gear, a cleaning brush is fixedly installed at the bottom end of the driving rod, and the bottom of the cleaning brush is contacted with the top of the base.
10. The concrete slump detection device for bridge construction according to claim 9, wherein a second crank is fixedly installed at one end of the rotating rod extending out of the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110996442.6A CN113759102B (en) | 2021-08-27 | 2021-08-27 | Concrete slump detection device for bridge construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110996442.6A CN113759102B (en) | 2021-08-27 | 2021-08-27 | Concrete slump detection device for bridge construction |
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| CN113759102A CN113759102A (en) | 2021-12-07 |
| CN113759102B true CN113759102B (en) | 2024-02-09 |
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| CN213516747U (en) * | 2020-08-31 | 2021-06-22 | 刘学振 | Concrete slump detection device |
| CN213337637U (en) * | 2020-11-07 | 2021-06-01 | 杨欣欣 | Concrete slump detection device is used in industry civil engineering construction |
| CN113203847A (en) * | 2021-03-18 | 2021-08-03 | 河南大学 | Detection device and method for accurately measuring concrete slump |
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| CN113759102A (en) | 2021-12-07 |
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