CN117705873A - Hydration test system and method for concrete - Google Patents
Hydration test system and method for concrete Download PDFInfo
- Publication number
- CN117705873A CN117705873A CN202410169305.9A CN202410169305A CN117705873A CN 117705873 A CN117705873 A CN 117705873A CN 202410169305 A CN202410169305 A CN 202410169305A CN 117705873 A CN117705873 A CN 117705873A
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- 238000006703 hydration reaction Methods 0.000 title claims abstract description 39
- 230000036571 hydration Effects 0.000 title claims abstract description 24
- 238000012360 testing method Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 121
- 239000010959 steel Substances 0.000 claims abstract description 121
- 230000007246 mechanism Effects 0.000 claims abstract description 52
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 238000012546 transfer Methods 0.000 claims abstract description 6
- 238000004088 simulation Methods 0.000 claims description 23
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 238000002474 experimental method Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to the technical field of concrete hydration experiments and discloses a hydration test system of concrete, which is characterized by comprising a base, a storage shell, a baffle, a pushing mechanism, a dragging mechanism and steel pipes, wherein the baffle is vertically and fixedly arranged on the base, the pushing mechanism is arranged on the base, the storage shell is arranged on the pushing mechanism, the pushing mechanism can drive the storage shell to move and enclose the baffle to form a storage cavity, the dragging mechanism is arranged on the plate surface of the baffle, the steel pipes are arranged on the dragging mechanism, the heat insulation plate is used for avoiding heat transfer among a plurality of cavities of the steel pipes, temperature sensors detect the temperature of each cavity of the steel pipes so as to compare the temperatures, the hydration reaction of the concrete is exothermic, the heat is transferred into the steel pipes, and thus the hydration reaction of the concrete at different positions is detected, and if the temperature difference detected by the temperature sensors is large, the hydration reaction degree difference of all areas of the concrete on the surface is large.
Description
Technical Field
The invention relates to the technical field of concrete hydration experiments, in particular to a hydration test system and a test method of concrete.
Background
Hydration heat refers to the heat released when a substance is hydrated. This thermal effect often does not occur solely by hydration, so other names are sometimes used. The thermal effect of hydration of calcium oxide, for example, is commonly referred to as heat elimination. The heat of hydration of cement, also known as hardening heat, is relatively precise, as a result of a series of actions including hydration, hydrolysis, and crystallization. The hydration heat can be directly measured in a calorimeter, and can also be indirectly calculated through the heat of fusion, and the heat can be released when the concrete is coagulated, and is generated by the reaction of various substances and water, so the heat is called as the hydration heat of the concrete, after the concrete is hydrated, if the heat release difference of the concrete in each area is large, larger profit is easily generated, the use of the concrete is influenced, and the compression resistance of the concrete is required to be tested.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a hydration test system and a test method of concrete.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
A hydration test system for concrete, comprising:
the automatic feeding device comprises a base, a storage shell, a baffle, a pushing mechanism, a dragging mechanism and a steel pipe, wherein the baffle is vertically and fixedly arranged on the base, the pushing mechanism is arranged on the base, the storage shell is arranged on the pushing mechanism, the pushing mechanism can drive the storage shell to move and enclose with the baffle to form a storage cavity, the dragging mechanism is arranged on the plate surface of the baffle, the steel pipe is arranged on the dragging mechanism, the dragging mechanism comprises a mounting plate, a first motor, a first screw rod, a first guide pillar and a pulling plate, the mounting plate is fixedly arranged on the plate surface of the baffle, the first motor is arranged on the mounting plate, an output shaft of the first motor is horizontally arranged, one end of the first screw rod is coaxially and fixedly connected with the output shaft end of the first motor, the other end of the first screw rod is rotationally connected with the plate surface of the baffle, the first guide pillar is arranged on one side of the first screw rod in parallel, the pulling plate is sleeved on the first guide pillar, one end of the steel pipe is fixedly sleeved on the pulling plate, the other end of the steel pipe penetrates through the plate surface of the baffle to stretch into the storage cavity, a compression ring is arranged on the plate surface of the baffle, and a pressure ring is embedded between the plate and the plate surface of the steel pipe and the pressing ring.
As a further improvement of the technical scheme, the steel pipe is a hollow pipe body, the wall part of the steel pipe is provided with a plurality of inserting grooves, the inserting grooves are uniformly distributed at intervals along the length direction of the steel pipe, the steel pipe is internally matched and fixedly sleeved with a heat insulation board, the heat insulation board is provided with a plurality of heat insulation boards and uniformly distributed at intervals, the heat insulation board divides the steel pipe into a plurality of chambers, a shifting plate is horizontally arranged in the steel pipe, one end part of the shifting plate is close to one end part of the steel pipe, the other end part of the shifting plate penetrates through the heat insulation board to extend out of the other end part of the steel pipe, temperature sensors are arranged in the chambers of the steel pipe, and a simulation component is arranged in the inserting grooves of the wall part of the steel pipe and is used for simulating threaded protrusions of steel bars.
As a further improvement of the technical scheme, the end part of the steel pipe is provided with an adjusting mechanism, the adjusting mechanism comprises a first connecting sleeve, a second connecting sleeve, a connecting plate, a second motor, a second screw rod and a second guide post, the first connecting sleeve and the second connecting sleeve are horizontally fixed at the end part of the steel pipe, the connecting plate is fixedly connected to the end part of the shifting plate, the connecting plate is perpendicular to the first connecting sleeve, the second motor is arranged on the surface of the connecting plate, one end of the second screw rod is coaxially and fixedly connected with the output shaft end of the second motor, the other end of the second screw rod penetrates through the surface of the connecting plate and stretches into the first connecting sleeve, the second guide post is arranged on one side of the second screw rod in parallel, and the second guide post is arranged in the second connecting sleeve.
As a further improvement of the technical scheme, the simulation assembly comprises a simulation block, a connecting column and a connecting rod, wherein the simulation block is inserted into an insertion groove of the wall part of the steel pipe in a matched manner, the connecting column is fixed at the bottom of the simulation block, one end of the connecting rod is hinged with the bottom of the connecting column, and the other end of the connecting rod is hinged with the top of the shifting plate.
As a further improvement of the technical scheme, the detection mechanism is arranged on the plate surface of the baffle and comprises a support plate, a fixing plate, an image sensor, a swinging rod and a connecting shaft, wherein the support plate is vertically fixed on the plate surface of the baffle, the fixing plate is vertically fixed at the top of the support plate, the swinging rod is rotatably arranged on the support plate through the connecting shaft, the image sensor is arranged at the top of the fixing plate, scale marks are arranged on the top plate surface of the swinging rod, an installation component is arranged on the support plate, and when the swinging rod is in a vertical state, the wall part of the lower section of the swinging rod is in contact with the plate surface of the pulling plate.
As a further improvement of the technical scheme, the mounting assembly comprises a first support plate, a second support plate, a guide rod, racks and gears, wherein the first support plate and the second support plate are fixed on the surface of the support plate, the guide rod is vertically connected between the first support plate and the second support plate, the guide rods are arranged in two and are arranged in parallel, the racks are sleeved on the guide rods through sliding sleeves, the end parts of the gears are coaxially and fixedly sleeved on the connecting shafts, the racks are meshed with the gears, the first springs and the second springs are sleeved on the guide rods, one ends of the first springs are in contact with the first support plate, the other ends of the first springs are in contact with the sliding sleeves, one ends of the second springs are in contact with the second support plate, and the elastic force of the first springs and the second springs can drive the swing rods to reset.
As a further improvement of the technical scheme, a first belt wheel is coaxially and fixedly sleeved on the first screw rod, a second belt wheel is sleeved on the steel pipe, the second belt wheel is rotationally connected with the wall part of the baffle, a hairbrush is arranged on the inner ring surface of the second belt wheel, the hairbrush is in contact with the wall part of the steel pipe, and the first belt wheel and the second belt wheel are in transmission through a belt.
Compared with the prior art, the invention has the advantages that in the use process, after the concrete is solidified, the motor drives the pulling plate to move in the direction away from the baffle plate so as to pull the steel pipe, the steel pipe drives the concrete to move, so that the concrete extrudes the compression ring, and then the pressure sensor detects the extrusion force born by the compression ring, so that the compression resistance of the concrete is detected;
the heat insulation plate is used for avoiding heat transfer among a plurality of chambers of the steel pipe, the temperature sensor detects the temperature of each chamber of the steel pipe, so that temperature comparison is carried out, the hydration reaction of the concrete releases heat, and heat is transferred into the steel pipe, so that the hydration reaction of the concrete at different positions is detected, and if the temperature difference detected by the temperature sensors is large, the hydration reaction degree difference of each area of the surface concrete is large;
the first motor drives the pulling plate to move in the direction away from the baffle, so that the steel pipe is pulled, the pulling plate drives the swing rod to deflect, then the image sensor detects the scale change at the top of the swing rod, and accordingly the displacement of the steel pipe is detected, the loosening condition of the steel pipe in concrete is detected, the steel pipe is pulled out in the concrete, the first motor drives the belt pulley to rotate, and accordingly the brush cleans impurities on the outer wall of the steel pipe.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments of the present invention will be briefly described below. It is evident that the drawings described below are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of the installation of the steel pipe according to the present invention.
FIG. 3 is a schematic diagram showing the cooperation of the pulling plate and the detecting mechanism according to the present invention.
FIG. 4 is a schematic diagram of the detection mechanism of the present invention.
Fig. 5 is a schematic view of the mounting assembly of the present invention.
Fig. 6 is a schematic view of an adjustment mechanism according to the present invention.
FIG. 7 is a schematic view of the inside of a steel pipe according to the present invention.
FIG. 8 is a schematic diagram of a simulation assembly of the present invention.
Fig. 9 is a schematic diagram of the displacement plate installation of the present invention.
FIG. 10 is a schematic view of a press ring assembly of the present invention.
The drawing is marked as:
10. a base; 110. a stock housing; 120. a baffle; 130. a pushing mechanism; 140. a drag mechanism; 141. a mounting plate; 142. a first motor; 143. a first screw rod; 144. a first guide post; 145. pulling a plate; 146. a belt wheel I; 147. a belt wheel II; 148. a brush;
20. a steel pipe; 210. an adjusting mechanism; 211. the first connecting sleeve is connected; 212. a second connecting sleeve; 213. a connecting plate; 214. a second motor; 215. a second screw rod; 216. a second guide post; 220. a heat insulating plate; 230. a displacement plate; 240. a temperature sensor; 250. a simulation component; 251. a simulation block; 252. a connecting column; 253. a connecting rod; 260. a compression ring; 261. a pressure sensor;
30. a detection mechanism; 310. a support plate; 320. a fixing plate; 321. an image sensor; 330. swing rod; 331. scale marks; 340. a connecting shaft; 350. a mounting assembly; 351. a first support plate; 352. a second support plate; 353. a guide rod; 354. a rack; 355. a gear.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the invention; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present invention and simplifying the description, rather than indicating or implying that the apparatus or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and are not to be construed as limiting the present invention, and that the specific meanings of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.
In the description of the present invention, unless explicitly stated and limited otherwise, the term "coupled" or the like should be interpreted broadly, as it may be fixedly coupled, detachably coupled, or integrally formed, as indicating the relationship of components; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two parts or interaction relationship between the two parts. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 10, a hydration test system for concrete, comprising:
the base 10, the stock shell 110, the baffle 120, the pushing mechanism 130, the dragging mechanism 140 and the steel tube 20, the baffle 120 is vertically and fixedly arranged on the base 10, the pushing mechanism 130 (which is an existing mechanism and is not specifically described) is arranged on the base 10, the stock shell 110 is arranged on the pushing mechanism 130, the pushing mechanism 130 can drive the stock shell 110 to move and enclose with the baffle 120 to form a stock cavity, the dragging mechanism 140 is arranged on the plate surface of the baffle 120, the steel tube 20 is arranged on the dragging mechanism 140, the dragging mechanism 140 comprises a mounting plate 141, a first motor 142, a first lead screw 143, a first guide post 144 and a pulling plate 145, the mounting plate 141 is fixedly arranged on the plate surface of the baffle 120, the first motor 142 is arranged on the mounting plate 141, the output shaft of the first motor 142 is horizontally arranged, one end of the first lead screw 143 is coaxially and fixedly connected with the output shaft end of the first motor 142, the other end of the screw rod I143 is rotationally connected with the plate surface of the baffle plate 120, the guide post I144 is arranged on one side of the screw rod I143 in parallel, the pull plate 145 is sleeved on the screw rod I143 and the guide post I144, one end part of the steel pipe 20 is fixedly sleeved on the pull plate 145, the other end of the steel pipe 20 penetrates through the plate surface of the baffle plate 120 and stretches into the material storage cavity, the plate surface of the baffle plate 120 is embedded with the compression ring 260, a pressure sensor 261 is arranged between the compression ring 260 and the plate surface of the baffle plate 120, the pushing mechanism 130 drives the material storage shell 110 to move and enclose the baffle plate 120 to form the material storage cavity, then concrete is poured into the material storage cavity, after the concrete is solidified, the motor I142 drives the pull plate 145 to move in a direction away from the baffle plate 120, so that the steel pipe 20 is pulled, the steel pipe 20 drives the concrete to generate a moving trend, so that the concrete extrudes the compression ring 260, then the compression ring 261 detects the extrusion force born by the compression ring 260, thereby detecting the compressive capacity of the concrete.
More specifically, the steel pipe 20 is hollow pipe body, the wall portion of the steel pipe 20 is provided with the jack-in groove, the jack-in groove is provided with a plurality of and evenly spaced along the length direction of the steel pipe 20, the fixed cover that matches in the steel pipe 20 is equipped with the heat insulating board 220, the heat insulating board 220 is provided with a plurality of and evenly spaced, the heat insulating board 220 separates the steel pipe 20 into a plurality of cavities, the steel pipe 20 is interior level is provided with the shift plate 230, one end of shift plate 230 is close to one end of steel pipe 20, the other end of shift plate 230 passes the heat insulating board 220 and stretches out the other end of steel pipe 20, all be provided with temperature sensor 240 in a plurality of cavities of steel pipe 20, be provided with analog subassembly 250 in the jack-in groove of steel pipe 20 wall portion, analog subassembly 250 is used for simulating the screw thread protrusion of reinforcing bar, heat insulating board 220 is used for avoiding heat transfer between a plurality of cavities of steel pipe 20, temperature sensor 240 detects the temperature of each cavity of steel pipe 20, thereby carry out the temperature contrast, the concrete hydration reaction exothermic, heat transfer is to the steel pipe 20, thereby detect the hydration reaction of concrete in different positions, if the temperature sensor 240 detects the temperature difference is big, each area of surface concrete hydration reaction is big.
More specifically, the end of the steel tube 20 is provided with an adjusting mechanism 210, the adjusting mechanism 210 includes a first connecting sleeve 211, a second connecting sleeve 212, a connecting plate 213, a second motor 214, a second screw rod 215, and a second guide post 216, the first connecting sleeve 211 and the second connecting sleeve 212 are horizontally fixed at the end of the steel tube 20, the connecting plate 213 is fixedly connected to the end of the shifting plate 230, the connecting plate 213 is perpendicular to the first connecting sleeve 211, the second motor 214 is mounted on the plate surface of the connecting plate 213, one end of the second screw rod 215 is coaxially and fixedly connected to the output shaft end of the second motor 214, the other end of the second screw rod 215 penetrates through the plate surface of the connecting plate 213 and extends into the first connecting sleeve 211, the second guide post 216 is arranged on one side of the second screw rod 215 in parallel, and the second guide post 216 is sleeved in the second connecting sleeve 212.
More specifically, the simulation assembly 250 includes a simulation block 251, a connection column 252, and a connection rod 253, the simulation block 251 is inserted into an insertion groove of a wall portion of the steel pipe 20, the connection column 252 is fixed at the bottom of the simulation block 251, one end of the connection rod 253 is hinged to the bottom of the connection column 252, the other end of the connection rod 253 is hinged to the top of the displacement plate 230, when the simulation block 251 extends out of the insertion groove of the wall portion of the steel pipe 20, the screw protrusion of the steel bar can be simulated, and when the steel pipe 20 needs to be taken out of the concrete, the second motor 214 drives the displacement plate 230 to move, so that the simulation block 251 is driven to move downwards and be accommodated in the steel pipe 20, and the steel pipe 20 is pulled out conveniently.
As shown in fig. 2-5, a detection mechanism 30 is disposed on the board surface of the baffle 120, the detection mechanism 30 includes a support plate 310, a fixing plate 320, an image sensor 321, a swing rod 330, and a connecting shaft 340, the support plate 310 is vertically fixed on the board surface of the baffle 120, the fixing plate 320 is vertically fixed on the top of the support plate 310, the swing rod 330 is rotatably mounted on the support plate 310 through the connecting shaft 340, the image sensor 321 is disposed on the top of the fixing plate 320, a scale mark 331 is disposed on the top board surface of the swing rod 330, a mounting assembly 350 is disposed on the support plate 310, and when the swing rod 330 is in a vertical state, the wall of the lower section of the swing rod 330 is in contact with the board surface of the pull plate 145.
More specifically, the installation component 350 includes a first support plate 351, a second support plate 352, a guide rod 353, a rack 354, and a gear 355, where the first support plate 351 and the second support plate 352 are fixed on the surface of the support plate 310, the guide rod 353 is vertically connected between the first support plate 351 and the second support plate 352, the guide rods 353 are arranged in parallel, the rack 354 is sleeved on the guide rod 353 through a sliding sleeve, the end of the gear 355 is coaxially and fixedly sleeved on the connecting shaft 340, the rack 354 is meshed with the gear 355, a first spring and a second spring are sleeved on the guide rod 353, one end of the first spring is in contact with the first support plate 351, the other end of the first spring is in contact with the sliding sleeve, one end of the second spring is in contact with the second support plate 352, the other end of the second spring is in contact with the sliding sleeve, the first spring and the second spring force can drive the swing rod 330 to reset, the first motor 142 drives the pull plate 145 to move away from the baffle 120, so as to pull the steel pipe 20, the pull plate 145 drives the swing rod 330 to deflect, and then the image sensor 321 detects the scale change at the top of the swing rod 330, so as to detect the displacement of the steel pipe 20, and thus detect the loosening condition of the concrete 20 in the concrete.
More specifically, a first belt pulley 146 is coaxially and fixedly sleeved on the first screw rod 143, a second belt pulley 147 is sleeved on the steel tube 20, the second belt pulley 147 is rotationally connected with the wall part of the baffle 120, a hairbrush 148 is arranged on the inner annular surface of the second belt pulley 147, the hairbrush 148 is in contact with the wall part of the steel tube 20, the first belt pulley 146 and the second belt pulley 147 are driven by a belt, and the first motor 142 drives the second belt pulley 147 to rotate in the process of pulling out the steel tube 20 by concrete, so that the hairbrush 148 cleans impurities on the outer wall of the steel tube 20.
Working principle:
in the use process of the invention, the pushing mechanism 130 drives the stock shell 110 to move and is enclosed with the baffle plate 120 to form a stock cavity, then concrete is poured into the stock cavity, after the concrete is solidified, the first motor 142 drives the pulling plate 145 to move away from the baffle plate 120, thereby pulling the steel pipe 20, the steel pipe 20 drives the concrete to move, thereby enabling the concrete to squeeze the compression ring 260, then the pressure sensor 261 detects the extrusion force born by the compression ring 260, thereby detecting the compression resistance of the concrete, the heat insulating plate 220 is used for avoiding heat transfer among a plurality of cavities of the steel pipe 20, the temperature sensor 240 detects the temperature of each cavity of the steel pipe 20, thereby performing temperature comparison, releasing heat of hydration reaction of the concrete, transferring the heat into the steel pipe 20, thereby detecting hydration reaction of the concrete at different positions, if the temperature difference detected by the plurality of temperature sensors 240 is large, the hydration reaction degree difference of each area of the surface concrete is large, the simulation block 251 can simulate the screw protrusion of the steel bar when extending out of the insertion groove of the wall part of the steel tube 20, when the steel tube 20 needs to be taken out of the concrete, the motor two 214 drives the shifting plate 230 to move so as to drive the simulation block 251 to move downwards and be accommodated in the steel tube 20, thereby being convenient for pulling out the steel tube 20, the motor one 142 drives the pulling plate 145 to move in a direction far away from the baffle 120 so as to pull out the steel tube 20, the pulling plate 145 drives the swing rod 330 to deflect, then the image sensor 321 detects the scale change at the top of the swing rod 330 so as to detect the shifting amount of the steel tube 20, thereby detecting the loosening condition of the steel tube 20 in the concrete, the motor one 142 drives the belt pulley two 147 to rotate in the process of pulling out the steel tube 20 in the concrete, so that the brush 148 cleans foreign substances from the outer wall of the steel pipe 20.
It should be understood that the above description is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be apparent to those skilled in the art that various modifications, equivalents, variations, and the like can be made to the present invention. However, such modifications are intended to fall within the scope of the present invention without departing from the spirit of the present invention. In addition, some terms used in the specification and claims of the present application are not limiting, but are merely for convenience of description.
Claims (8)
1. A hydration test system for concrete, comprising:
the automatic feeding device comprises a base, a storage shell, a baffle, a pushing mechanism, a dragging mechanism and a steel pipe, wherein the baffle is vertically and fixedly arranged on the base, the pushing mechanism is arranged on the base, the storage shell is arranged on the pushing mechanism, the pushing mechanism can drive the storage shell to move and enclose with the baffle to form a storage cavity, the dragging mechanism is arranged on the plate surface of the baffle, the steel pipe is arranged on the dragging mechanism, the dragging mechanism comprises a mounting plate, a first motor, a first screw rod, a first guide pillar and a pulling plate, the mounting plate is fixedly arranged on the plate surface of the baffle, the first motor is arranged on the mounting plate, an output shaft of the first motor is horizontally arranged, one end of the first screw rod is coaxially and fixedly connected with the output shaft end of the first motor, the other end of the first screw rod is rotationally connected with the plate surface of the baffle, the first guide pillar is arranged on one side of the first screw rod in parallel, the pulling plate is sleeved on the first guide pillar, one end of the steel pipe is fixedly sleeved on the pulling plate, the other end of the steel pipe penetrates through the plate surface of the baffle to stretch into the storage cavity, a compression ring is arranged on the plate surface of the baffle, and a pressure ring is embedded between the plate and the plate surface of the steel pipe and the pressing ring.
2. The hydration test system of concrete according to claim 1, wherein the steel pipe is a hollow pipe body, the wall portion of the steel pipe is provided with inserting grooves, the inserting grooves are provided with a plurality of inserting grooves and are uniformly distributed at intervals along the length direction of the steel pipe, the steel pipe is internally matched and fixedly sleeved with heat insulation boards, the heat insulation boards are provided with a plurality of inserting grooves and are uniformly distributed at intervals, the heat insulation boards divide the steel pipe into a plurality of chambers, a shifting plate is horizontally arranged in the steel pipe, one end portion of the shifting plate is close to one end portion of the steel pipe, the other end portion of the shifting plate penetrates through the heat insulation boards to extend out of the other end portion of the steel pipe, temperature sensors are arranged in the chambers of the steel pipe, and a simulation component is arranged in the inserting grooves of the wall portion of the steel pipe and is used for simulating threaded protrusions of steel bars.
3. The hydration test system of concrete according to claim 2, wherein the end part of the steel pipe is provided with an adjusting mechanism, the adjusting mechanism comprises a first connecting sleeve, a second connecting sleeve, a connecting plate, a second motor, a second screw rod and a second guide post, the first connecting sleeve and the second connecting sleeve are horizontally fixed at the end part of the steel pipe, the connecting plate is fixedly connected at the end part of the shifting plate, the connecting plate is vertical to the first connecting sleeve, the second motor is arranged on the surface of the connecting plate, one end of the second screw rod is coaxially and fixedly connected with the output shaft end of the second motor, the other end of the second screw rod penetrates through the surface of the connecting plate and stretches into the first connecting sleeve, the second guide post is arranged on one side of the second screw rod in parallel, and the second guide post is sleeved in the second connecting sleeve.
4. A hydration test system for concrete according to claim 3, wherein said simulation assembly comprises a simulation block, a connection column, and a connection rod, said simulation block is inserted into an insertion groove of a wall portion of the steel pipe, said connection column is fixed to a bottom of said simulation block, one end of said connection rod is hinged to a bottom of said connection column, and the other end of said connection rod is hinged to a top of said displacement plate.
5. The hydration test system of concrete according to claim 4, wherein a detection mechanism is arranged on the plate surface of the baffle plate and comprises a supporting plate, a fixing plate, an image sensor, a swinging rod and a connecting shaft, wherein the supporting plate is vertically fixed on the plate surface of the baffle plate, the fixing plate is vertically fixed on the top of the supporting plate, the swinging rod is rotatably arranged on the supporting plate through the connecting shaft, the image sensor is arranged on the top of the fixing plate, scale marks are arranged on the top plate surface of the swinging rod, an installation component is arranged on the supporting plate, and when the swinging rod is in a vertical state, the wall part of the lower section of the swinging rod is in contact with the plate surface of the pulling plate.
6. The hydration test system of concrete according to claim 5, wherein the installation component comprises a first support plate, a second support plate, a guide rod, racks and gears, wherein the first support plate and the second support plate are fixed on the surface of the support plate, the guide rod is vertically connected between the first support plate and the second support plate, the two guide rods are arranged in parallel, the racks are sleeved on the guide rod through sliding sleeves, the end parts of the gears are coaxially and fixedly sleeved on the connecting shaft, the racks are meshed with the gears, the first springs and the second springs are sleeved on the guide rod, one ends of the first springs are in contact with the first support plate, the other ends of the first springs are in contact with the sliding sleeves, one ends of the second springs are in contact with the second support plate, the other ends of the second springs are in contact with the sliding sleeves, and the elastic force of the first springs and the second springs can drive the swing rod to reset.
7. The hydration test system of concrete according to claim 6, wherein the first screw rod is coaxially and fixedly sleeved with a first belt pulley, the second belt pulley is sleeved on the steel pipe and is rotationally connected with the wall part of the baffle plate, a hairbrush is arranged on the inner ring surface of the second belt pulley and is in contact with the wall part of the steel pipe, and the first belt pulley and the second belt pulley are driven by a belt.
8. The test method of the hydration test system of the concrete according to claim 7, which comprises the following steps:
s1, a pushing mechanism drives a storage shell to move and enclose with a baffle plate to form a storage cavity, concrete is poured into the storage cavity, after concrete solidification is completed, a motor drives a pulling plate to move in a direction away from the baffle plate, so that a steel pipe is pulled, the steel pipe drives the concrete to move, so that the concrete extrudes a compression ring, and then a pressure sensor detects extrusion force applied to the compression ring, so that the compression resistance of the concrete is detected;
s2, the heat insulation plate is used for avoiding heat transfer among a plurality of chambers of the steel pipe, the temperature sensors detect the temperature of each chamber of the steel pipe, so that temperature comparison is carried out, the hydration reaction of the concrete is exothermic, heat is transferred into the steel pipe, the hydration reaction of the concrete at different positions is detected, and if the temperature difference detected by the temperature sensors is large, the hydration reaction degree difference of each area of the surface concrete is large;
s3, when the simulation block stretches out of the inserting groove of the wall part of the steel pipe, the threaded protrusion of the steel bar can be simulated, when the steel pipe is required to be taken out of the concrete, the motor II drives the shifting plate to move, so that the simulation block is driven to move downwards and be contained in the steel pipe, the motor I drives the pulling plate to move in the direction away from the baffle, the steel pipe is pulled, the pulling plate drives the swing rod to deflect, then the image sensor detects the scale change at the top of the swing rod, and accordingly the displacement of the steel pipe is detected, the loosening condition of the steel pipe in the concrete is detected, and the motor I drives the belt pulley II to rotate in the pulling process of the concrete, so that the brush cleans impurities on the outer wall of the steel pipe.
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