CN112763697A - Concrete slump detection device for concrete hollow block production - Google Patents
Concrete slump detection device for concrete hollow block production Download PDFInfo
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- CN112763697A CN112763697A CN202011462414.8A CN202011462414A CN112763697A CN 112763697 A CN112763697 A CN 112763697A CN 202011462414 A CN202011462414 A CN 202011462414A CN 112763697 A CN112763697 A CN 112763697A
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- 238000001514 detection method Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000013016 damping Methods 0.000 claims abstract description 32
- 238000005259 measurement Methods 0.000 claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 16
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 11
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 11
- 241001330002 Bambuseae Species 0.000 claims description 11
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 11
- 239000011425 bamboo Substances 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 229920001875 Ebonite Polymers 0.000 claims description 3
- 238000003860 storage Methods 0.000 abstract description 10
- 238000000605 extraction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002969 artificial stone Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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; ceramics; glass; bricks
- G01N33/383—Concrete, cement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
- G01B5/061—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges
Abstract
The invention relates to the technical field of concrete detection devices, in particular to a concrete slump detection device which can be used for producing concrete hollow blocks, and comprises a base, a horizontal bubble, a slump cone, a supporting rod and a measuring rod, wherein the base is provided with a horizontal bubble hole; the four corners of the base are respectively provided with a height-adjusting bolt; the bottom of the slump cone is fixed through a fixing pin; a handle is rotatably arranged on the outer side surface of the slump cone; the lower part of the supporting rod is provided with a screw hole, and the upper part of the supporting rod is provided with scales; the measuring rod is provided with an installation sleeve, and the installation sleeve is slidably installed on the supporting rod; the right end of the measuring rod is attached to the upper end face of the damping mechanism. The invention has simple structure principle, effectively solves the problems of inconvenient collapse degree cylinder extraction and easy unbalance of the device during size measurement, greatly improves the precision of concrete collapse degree measurement, can be stored in the storage box, greatly improves the portability and has strong practicability.
Description
Technical Field
The invention relates to the technical field of concrete detection devices, in particular to a concrete slump detection device which can be used for producing concrete hollow blocks.
Background
The common concrete is artificial stone which is prepared by taking cement as a main cementing material, adding water, sand, stones and chemical additives and mineral admixtures if necessary, mixing the materials according to a proper proportion, uniformly stirring, densely molding, curing and hardening. Concrete is mainly divided into two stages and states: plastic state before setting and hardening, namely fresh concrete or concrete mixture; hardened, i.e. hardened concrete or concrete.
The existing Chinese patent (publication number: CN207232169U, published: 2018.04.13) discloses a concrete slump detection device, which comprises a bottom plate, a slump cylinder arranged on the upper surface of the bottom plate and a vertical measurement device arranged above the bottom plate, wherein a hemispherical leveling part is arranged at the center of the lower surface of the bottom plate, a base is arranged below the bottom plate, an arc-shaped groove is formed in the upper surface of the base, two side surfaces of the arc-shaped groove are respectively connected with a positioning block in a transverse sliding manner, a fixing bolt is arranged on the base, and the slump cylinder and the vertical measurement component are both detachably connected with the bottom plate. But the device is carrying out the in-process that the concrete slump detected, because its height measuring pole need slide to different positions when measuring and empting the concrete, and the bottom balance mechanism of the device is realized through hemispherical leveling spare, lead to sliding the in-process and cause whole device to be out of level very easily, seriously influence and detect the precision, simultaneously after the concrete is filled up in the slump section of thick bamboo, make the in-process of drawing apart it with the frictional force of slump section of thick bamboo and concrete very difficult, also cause the device to be out of level and touch the problem of inside concrete simultaneously easily, influence and detect the precision.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a concrete slump detection device which can be used for producing concrete hollow blocks.
In order to achieve the purpose, the invention provides the following technical scheme:
a concrete slump detection device capable of being used for concrete hollow block production comprises a base, a horizontal bubble, a slump cone, supporting rods and a measuring rod, wherein the horizontal bubble is arranged on the front side of the upper end face of the base, the slump cone is fixed at the center of the upper end face of the base, the supporting rods are symmetrically arranged on the left side and the right side of the slump cone, and the measuring rod is arranged on the upper portion of the slump cone;
the four corners of the base are respectively provided with a heightening bolt hole, a heightening bolt is arranged in the heightening bolt hole in a threaded manner, and the heightening bolt is matched with the horizontal bubble for use and is used for adjusting the base to be horizontal;
the bottom of the slump cone is fixedly welded with an installation ring, the installation ring is provided with a plurality of fixing pin holes, the upper end surface of the base is provided with a plurality of jacks, the fixing pin holes correspond to the jacks in position one by one, and fixing pins are inserted into the fixing pin holes and the jacks and used for determining the position of the slump cone and fixing the slump cone; the outside surface of the slump cone is rotatably provided with the handle, so that the slump cone can be conveniently pulled away, the difficulty in separating the slump cone from concrete is reduced, the slump cone can be conveniently vertically pulled away from the concrete, and the phenomenon that the slump measurement precision is influenced by the extrusion deformation of the internal concrete in the pulling away process is avoided;
the lower part of the supporting rod is provided with an external thread, the external thread is arranged in an installation screw hole in a threaded manner, and the installation screw hole is formed in the upper end surface of the base and used for fixing the supporting rod; scales are processed on the upper part of the supporting rod and used for measuring the height of concrete so as to calculate the slump;
the measuring rod is provided with an installation sleeve, and the installation sleeve is slidably installed on the supporting rod and used for installing the measuring rod on the supporting rod; the measuring stick right-hand member pastes with damping mechanism's up end, and damping mechanism plays the damping supporting role, avoids the measuring stick landing on the bracing piece, and it can the reading just to measure the face laminating with the area until the lower terminal surface of measuring stick to need measure to only press down the measuring stick, and measuring stick can rise to initial position after the pine hand, avoids pounding the measurement accuracy who falls on the concrete influence slump.
As a further scheme of the invention: the damping mechanism comprises an upper block, a mounting seat, a groove and elastic pieces, wherein the lower part of the upper block is slidably mounted in the groove, the groove is formed in the mounting seat, and the plurality of elastic pieces are arranged in the groove; the elastic part comprises a sleeve, a sliding rod and a spring, the lower end face of the sleeve is fixedly welded with the inner wall of the bottom of the groove, the sliding rod is slidably mounted inside the sleeve, the top end of the sliding rod is attached to the lower end face of the upper block, and the spring is sleeved outside the upper block.
As a further scheme of the invention: the locating slot has been seted up to the top end of top block for clamp the bracing piece, avoid rocking that the bracing piece overlength caused to influence measurement accuracy.
As a further scheme of the invention: the handle is sleeved with an anti-slip sleeve, and the anti-slip sleeve is made of hard rubber and used for preventing slipping.
As a further scheme of the invention: measuring stick up end welded fastening has the press plate for increase when pushing down and the area of contact of hand, make to push down light more stably, further promote the measurement accuracy of slump.
As a further scheme of the invention: the base clamps and accomodates the inslot at the base, the base is accomodate the groove and is seted up on the containing box, the containing box rotates with the case lid and is connected, still seted up the measuring stick on the containing box and accomodate groove, bracing piece and accomodate groove, fixed pin and accomodate groove, heighten the bolt and accomodate groove, slump section of thick bamboo and accomodate groove, damping mechanism and accomodate groove and damping mechanism mounting groove, the measuring stick is accomodate groove, bracing piece and accomodate groove, fixed pin and accomodate groove, heighten the bolt and accomodate groove, slump section of thick bamboo and damping mechanism and be used for placing respectively measuring stick, bracing piece, fixed pin, heighten bolt hole, slump section of thick bamboo and damping mechanism, the damping mechanism mounting groove is installed when being used for measuring damping mechanism.
Compared with the prior art, the invention has the beneficial effects that:
during measurement, firstly, the height adjusting bolt is matched with the horizontal bubble for use, the base is adjusted to be horizontal, then, the slump cone is installed, after concrete is filled, the slump cone is conveniently pulled out by using the handle, the difficulty of separating the slump cone from the concrete is reduced, meanwhile, the slump cone is conveniently and vertically pulled out of the concrete, the phenomenon that the slump measurement precision is influenced by the extrusion deformation of the internal concrete in the pulling-out process is avoided, when the height difference before and after slump is measured, the reading can be carried out only by pressing the measuring rod until the lower end face of the measuring rod is just attached to the measuring surface with the measuring rod, the measuring rod can rise to the initial position after loosening, the phenomenon that the measuring rod falls on the concrete to influence the measurement precision of the slump is avoided, and all parts can be placed in the storage box for storage after being disassembled; the portability is greatly improved. The invention has simple structure principle, effectively solves the problems of inconvenient collapse degree cylinder extraction and easy unbalance of the device during size measurement, greatly improves the precision of concrete collapse degree measurement, can be stored in the storage box, greatly improves the portability and has strong practicability.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a top view of FIG. 1
Fig. 3 is an enlarged view of a portion a in fig. 1.
Fig. 4 is an enlarged view of a portion B in fig. 1.
Fig. 5 is an enlarged schematic view of the damping mechanism of fig. 1.
Fig. 6 is a schematic view of the present invention stored in the storage box.
In the figure: 1-base, 2-horizontal bulb, 3-slump cone, 4-support bar, 5-measuring bar, 6-heightening bolt hole, 7-heightening bolt, 8-mounting ring, 9-fixing pin hole, 10-jack, 11-fixing pin, 12-mounting screw hole, 13-external thread, 14-scale, 15-mounting sleeve, 16-damping mechanism, 17-upper block, 18-mounting seat, 19-groove, 20-elastic member, 21-sleeve, 22-slide bar, 23-spring, 24-handle, 25-anti-slip sleeve, 26-pressing plate, 27-positioning groove, 28-storage box, 29-box cover, 30-base storage groove, 31-measuring bar storage groove, 32-support bar storage groove, 33-a fixed pin accommodating groove, 34-an heightening bolt accommodating groove, 35-a slump cone accommodating groove, 36-a damping mechanism accommodating groove and 37-a damping mechanism mounting groove.
Detailed Description
Example 1
Referring to fig. 1-5, a concrete slump detection device for concrete hollow block production comprises a base 1, a horizontal bubble 2, a slump cone 3, a support rod 4 and a measuring rod 5, wherein the horizontal bubble 2 is arranged on the front side of the upper end face of the base 1, the slump cone 3 is fixed on the center of the upper end face of the base 1, the support rods 4 are symmetrically arranged on the left side and the right side of the slump cone 3, and the measuring rod 5 is arranged on the upper part of the slump cone 3;
the four corners of the base 1 are respectively provided with a heightening bolt hole 6, a heightening bolt 7 is mounted in the heightening bolt hole 6 through internal threads, and the heightening bolt 7 is matched with the horizontal bubble 2 for use and used for adjusting the base 1 to be horizontal;
a mounting ring 8 is fixedly welded at the bottom of the slump cone 3, a plurality of fixing pin holes 9 are formed in the mounting ring 8, a plurality of insertion holes 10 are formed in the upper end surface of the base 1, the fixing pin holes 9 correspond to the insertion holes 10 in position one by one, and fixing pins 11 are inserted into the fixing pin holes 9 and the insertion holes 10 and used for determining the position of the slump cone 3 and fixing the slump cone 3; the handle 24 is rotatably arranged on the outer side surface of the slump cone 3, so that the slump cone 3 can be conveniently pulled away, the difficulty of separating the slump cone 3 from concrete is reduced, the slump cone 3 can be conveniently vertically pulled away from the concrete, and the phenomenon that the slump measurement precision is influenced by the extrusion deformation of the internal concrete in the pulling away process is avoided;
the lower part of the supporting rod 4 is provided with an external thread 13, the external thread 13 is installed in an installation screw hole 12 in a threaded manner, and the installation screw hole 12 is formed in the upper end face of the base 1 and used for fixing the supporting rod 4; scales 14 are processed on the upper part of the support rod 4 and used for measuring the height of concrete so as to calculate the slump;
the measuring rod 5 is provided with an installation sleeve 15, and the installation sleeve 15 is slidably installed on the supporting rod 4 and used for installing the measuring rod 5 on the supporting rod 4; 5 right-hand member of measuring stick and 16's up end laminating, damping mechanism 16 plays the damping supporting role, avoids measuring stick 5 landing on bracing piece 4, need measure and only need push down measuring stick 5 until the lower terminal surface of measuring stick 5 just with take the measuring face laminating can the reading, measuring stick 5 can rise to initial position after the loose hand, avoids pounding the measuring accuracy who influences the slump on the concrete.
Example 2
Referring to fig. 1 to 5, the present embodiment is different from embodiment 1 only in that the damping mechanism 16 includes an upper block 17, a mounting seat 18, a groove 19 and elastic members 20, the lower portion of the upper block 17 is slidably mounted in the groove 19, the groove 19 is disposed on the mounting seat 18, and a plurality of elastic members 20 are further disposed in the groove 19; the elastic part 20 comprises a sleeve 21, a sliding rod 22 and a spring 23, the lower end face of the sleeve 21 is welded and fixed with the inner wall of the bottom of the groove 19, the sliding rod 22 is installed in the sleeve 21 in a sliding mode, the top end of the sliding rod 22 is attached to the lower end face of the upper block 17, and the spring 23 is sleeved outside the upper block 17; the upper end surface of the upper block 17 is provided with a positioning groove 27 for clamping the support rod 4, so that the measurement precision is prevented from being influenced by shaking caused by overlong support rod 4;
the handle 24 is sleeved with an anti-slip sleeve 25, and the anti-slip sleeve 25 is made of hard rubber and used for preventing slipping;
the measuring stick 5 up end welded fastening has pressing plate 26 for increase when pushing down and the area of contact of hand, make and push down light more stably, further promote the measurement accuracy of slump.
Example 3
Referring to fig. 6, the present embodiment is different from embodiment 1 only in that the base 1 is clamped in the base receiving groove 30, the base accommodating groove 30 is opened on the accommodating box 28, the accommodating box 28 is rotatably connected with the box cover 29, the containing box 28 is also provided with a measuring rod containing groove 31, a supporting rod containing groove 32, a fixing pin containing groove 33, a heightening bolt containing groove 34, a slump cone containing groove 35, a damping mechanism containing groove 36 and a damping mechanism mounting groove 37, groove 31 is accomodate to the measuring stick, 32 is accomodate to the bracing piece, the fixed pin is accomodate groove 33, is increaseed the bolt and is accomodate groove 34, a slump section of thick bamboo and accomodate groove 35 and damping mechanism and take in groove 36 and be used for placing respectively measuring stick 5, bracing piece 4, fixed pin 11, increaseing bolt hole 6, a slump section of thick bamboo 3 and damping mechanism 16, damping mechanism mounting groove 37 is used for installing when measuring damping mechanism 16.
The working principle of the invention is as follows: during measurement, firstly, the height adjusting bolt 7 is matched with the horizontal bubble 2 for use, the base 1 is adjusted to be horizontal, then the slump cone 3 is installed through the 9, after concrete is filled, the slump cone 3 is conveniently pulled away by using the handle 24, the difficulty of separating the slump cone 3 from the concrete is reduced, meanwhile, the slump cone 3 is conveniently pulled away from the concrete vertically, the phenomenon that the slump measurement precision is influenced by the extrusion deformation of the internal concrete in the pulling away process is avoided, when the height difference before and after slump measurement is carried out, the measurement rod 5 is only required to be pressed down until the lower end face of the measurement rod 5 is just attached to a measuring face with a measuring head for reading, the measurement rod 5 can be lifted to the initial position after releasing the hand, the phenomenon that the measurement rod 5 is dropped on the concrete for influencing the measurement precision of the slump is avoided, and after the use, all parts can be disassembled and placed in the containing box 28 for containing; the portability is greatly improved. The invention has simple structure principle, effectively solves the problems of inconvenient collapse degree cylinder extraction and easy unbalance of the device during size measurement, greatly improves the precision of concrete collapse degree measurement, can be stored in the storage box, greatly improves the portability and has strong practicability.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a concrete slump detection device that can be used for concrete hollow block production, includes base (1), level bubble (2), a slump section of thick bamboo (3), bracing piece (4) and measuring stick (5), base (1) up end front side is provided with level bubble (2), base (1) up end central point is fixed with a slump section of thick bamboo (3), slump section of thick bamboo (3) left and right sides symmetry is provided with bracing piece (4), slump section of thick bamboo (3) upper portion is provided with measuring stick (5), its characterized in that: four corners of the base (1) are respectively provided with a heightening bolt hole (6), and a heightening bolt (7) is installed in the heightening bolt hole (6) through internal threads;
a mounting ring (8) is fixedly welded at the bottom of the slump cone (3), a plurality of fixing pin holes (9) are formed in the mounting ring (8), a plurality of insertion holes (10) are formed in the upper end surface of the base (1), the fixing pin holes (9) correspond to the insertion holes (10) in one-to-one correspondence, and fixing pins (11) are inserted into the fixing pin holes (9) and the insertion holes (10); a handle (24) is rotatably arranged on the outer side surface of the slump cone (3);
an external thread (13) is processed at the lower part of the supporting rod (4), the external thread (13) is installed in an installation screw hole (12) in a threaded manner, the installation screw hole (12) is formed in the upper end surface of the base (1), and scales (14) are processed at the upper part of the supporting rod (4);
the measuring rod (5) is provided with an installation sleeve (15), and the installation sleeve (15) is slidably installed on the supporting rod (4); the right end of the measuring rod (5) is attached to the upper end face of the damping mechanism (16).
2. The concrete slump detecting device which can be used for the production of the concrete hollow blocks according to claim 1, wherein: damping mechanism (16) include upper portion piece (17), mount pad (18), groove (19) and elastic component (20), upper portion piece (17) lower part slidable mounting be in groove (19), groove (19) are seted up on mount pad (18), still be provided with a plurality of elastic components (20) in groove (19).
3. The concrete slump detecting device which can be used for the production of the concrete hollow blocks according to claim 2, wherein: elastic component (20) include sleeve (21), slide bar (22) and spring (23), under sleeve (21) terminal surface with groove (19) bottom inner wall welded fastening, sleeve (21) inside slidable mounting have slide bar (22), slide bar (22) top with terminal surface laminating under upper portion piece (17), upper portion piece (17) outside cover is equipped with spring (23).
4. The concrete slump detecting device which can be used for the production of the concrete hollow blocks according to claim 2, wherein: and a positioning groove (27) is formed in the upper end surface of the upper block (17).
5. The concrete slump detecting device which can be used for the production of the concrete hollow blocks according to claim 1, wherein: the handle (24) is sleeved with an anti-slip sleeve (25).
6. The concrete slump detecting device which can be used for the production of the concrete hollow blocks according to claim 5, wherein: the anti-skid sleeve (25) is made of hard rubber.
7. The concrete slump detecting device which can be used for the production of the concrete hollow blocks according to claim 1, wherein: and a pressing plate (26) is fixedly welded on the upper end surface of the measuring rod (5).
8. A concrete slump detecting device which can be used for concrete hollow block production according to any one of claims 1 to 7, wherein: the base (1) is clamped in a base accommodating groove (30), the base accommodating groove (30) is arranged on a containing box (28), the containing box (28) is rotatably connected with a box cover (29), the containing box (28) is further provided with a measuring rod accommodating groove (31), a supporting rod accommodating groove (32), a fixing pin accommodating groove (33), an heightening bolt accommodating groove (34), a slump cone accommodating groove (35), a damping mechanism accommodating groove (36) and a damping mechanism mounting groove (37), the measuring rod accommodating groove (31), the supporting rod accommodating groove (32), the fixing pin accommodating groove (33), the heightening bolt accommodating groove (34), the slump cone accommodating groove (35) and the damping mechanism accommodating groove (36) are respectively used for placing a measuring rod (5), a supporting rod (4), a fixing pin (11), an heightening bolt hole (6), a slump cone (3) and a damping mechanism (16), the damping mechanism mounting groove (37) is used for mounting the damping mechanism (16) during measurement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011462414.8A CN112763697A (en) | 2020-12-12 | 2020-12-12 | Concrete slump detection device for concrete hollow block production |
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| CN202011462414.8A CN112763697A (en) | 2020-12-12 | 2020-12-12 | Concrete slump detection device for concrete hollow block production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113777285A (en) * | 2021-10-19 | 2021-12-10 | 泰源工程集团股份有限公司 | Concrete slump detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113777285A (en) * | 2021-10-19 | 2021-12-10 | 泰源工程集团股份有限公司 | Concrete slump detection device |
| CN113777285B (en) * | 2021-10-19 | 2024-04-09 | 泰源工程集团股份有限公司 | Concrete slump detection device |
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Application publication date: 20210507 |
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