CN117491178B - Concrete performance detection device with multiple environment simulation function - Google Patents
Concrete performance detection device with multiple environment simulation function Download PDFInfo
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- CN117491178B CN117491178B CN202410002554.9A CN202410002554A CN117491178B CN 117491178 B CN117491178 B CN 117491178B CN 202410002554 A CN202410002554 A CN 202410002554A CN 117491178 B CN117491178 B CN 117491178B
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- 238000001514 detection method Methods 0.000 title claims abstract description 65
- 238000004088 simulation Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 162
- 238000003825 pressing Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims description 40
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 16
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 description 14
- 238000002788 crimping Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 239000012466 permeate Substances 0.000 description 3
- 239000004566 building material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009778 extrusion testing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/066—Special adaptations of indicating or recording means with electrical indicating or recording means
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Abstract
The invention discloses a concrete performance detection device with a multi-environment simulation function, which is used for detecting a test piece and comprises a bearing device, an adjusting device and a pressing device, wherein the bearing device is connected with the adjusting device, the pressing device is fixedly connected with the bearing device, the test piece is arranged on the bearing device, the output end of the pressing device faces the upper surface of the test piece, the adjusting device is used for detecting the impermeability and the crack resistance of the test piece, the adjusting device is used for providing a high-temperature and high-humidity environment to perform multi-environment simulation, the impermeability and the crack resistance of the test piece are detected, the pressing device is used for providing a pressure source for crack resistance detection, and when the test piece made of concrete is detected, the conditions of the concrete block in the use process are simulated by adopting an up-down bidirectional pressure test, so that the test accuracy is improved.
Description
Technical Field
The invention relates to the technical field of concrete performance detection, in particular to a concrete performance detection device with a multi-environment simulation function.
Background
Along with the continuous development of the urban process, the requirements on building materials are gradually increased, and the concrete which is one of the most main building materials in the current generation is widely applied to various civil buildings due to rich raw materials and low price.
In order to meet the increasingly strict requirements, the building industry is continuously innovated, the performance of the concrete needs to be detected in order to ensure the service performance of the concrete, however, a common detection device can only detect the single performance of a test piece of the concrete, multi-environment simulation detection cannot be carried out, the use is relatively limited, the new detection station needs to be relocated, and the operation process is relatively complicated.
In addition, when carrying out compressive test, if the concrete produces micro crack, can't observe by naked eyes, continuous exerting pressure causes the concrete to be cracked easily, and not only the clearance degree of difficulty is big, and the clearance is unclean still can influence subsequent atress homogeneity, because the concrete is porous structure, the impermeability is an important index of concrete, directly leads to the fact the seepage easily through liquid exerting pressure, influences continuity detection efficiency.
Disclosure of Invention
The invention aims to provide a concrete performance detection device with a multi-environment simulation function, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a concrete performance detection device with multiple environment simulation function, concrete performance detection device is used for detecting the test piece, including bearing device, adjusting device and pressure applying device, bearing device and adjusting device are connected, and pressure applying device and bearing device fastening connection, the test piece is arranged in on the bearing device, and the pressure applying device output is towards test piece upper surface, and adjusting device is used for detecting test piece impermeability and crack resistance.
The bearing device is used as a main installation base for installing other devices, provides a bearing base for the test piece, the adjusting device is used for providing a high-temperature and high-humidity environment, performing multi-environment simulation, detecting the impermeability and the cracking resistance of the test piece, the pressing device is used for providing a pressure source for detecting the cracking resistance, and when the test piece made of concrete is detected, the condition of the concrete block in the use process is simulated by adopting an up-down bidirectional pressure test, so that the test accuracy is improved.
Further, the bearing device comprises a bottom plate, an installing table is arranged on the bottom plate, the test piece is arranged on the installing table, a portal frame is arranged on the bottom plate in an upward extending mode, the portal frame is fixedly connected with the bottom plate, the pressing device is fixedly connected with a cross rod of the portal frame, the pressing device comprises a pressing cylinder body and is fixedly connected with the cross rod of the portal frame, a bearing plate is arranged at the output end of the pressing cylinder body, and the pressing cylinder body is fixedly connected with the bearing plate;
when the pressure is applied, the following steps are carried out: the lower surface of the bearing plate is attached to the upper surface of the test piece, and the size of the bearing plate is matched with the test piece.
The bottom plate is spacing through the mount table to the test piece, install pressure applying device through overhead portal frame, when carrying out the extrusion test, there is the test piece lower extreme to be spacing by the mount table, the crimping jar on the portal frame horizontal pole can be with the pressure-bearing plate pressure at the upper surface of test piece, simulate concrete block main atress direction in the use, crimping jar and bearing plate can adopt detachable structure, be convenient for carry out the crimping test to the test piece of different specifications, when carrying out crack resistance test, bearing plate and mount table carry out two-way extrusion to the test piece, bearing plate size is according to the size selection of test piece, in the pressure applying process, make test piece upside carry out even atress, avoid local atress uneven impaired, influence crack resistance detection precision.
Further, the concrete performance detection device further comprises a side plate, the adjusting device comprises a humidity adjusting component, the humidity adjusting component and the side plate are arranged in opposite directions, the humidity adjusting component and the side plate are respectively and fixedly connected with two vertical plates of the portal frame, and the humidity adjusting component is used for carrying out humidity environment test on the test piece.
After the pressure is applied by the pressure applying device, the humidity-containing air flow is supplied by the humidity adjusting component, and because the hardened concrete is of a porous structure, the humidity-containing air flow can permeate the test piece, the permeability of the test piece in a high-humidity environment is detected by supplying the humidity-containing air flow, the humidity adjusting component and the side plates are oppositely arranged, and the applied forces on the two sides of the test piece are equal in magnitude and opposite in direction when the test is performed, so that the auxiliary positioning and the installation of the test piece are performed.
Further, the humidifying component comprises a wet air pipe, an adjusting cylinder and a sealing plate, the adjusting cylinder is fixedly connected with a portal frame vertical plate, the output end of the adjusting cylinder is fixedly connected with the sealing plate, the sealing plate faces the side surface of the test piece, the sealing plate and the side plate are oppositely arranged, a flow guide cavity is arranged on the sealing plate, and an outlet of the wet air pipe is communicated with a flow guide cavity pipeline;
when humidity is regulated: the sealing plate and the side plate are respectively abutted with two side surfaces of the test piece.
The wet air pipe and the wet air source are communicated, the wet air after pressure rising is fed into the flow guide cavity of the sealing plate through the wet air pipe, the side edge of the sealing plate is abutted to the test piece, sealing is guaranteed through pressing, after the wet air enters the flow guide cavity, the wet air can gradually spread to the inside of the test piece due to the permeability of the test piece, the single side of the test piece is permeated, the unidirectional permeability of the test piece in the use process is simulated, the regulating cylinder is mounted on the vertical plate of the portal frame, the sealing plate is driven to transversely move through output displacement, and accordingly the contact position of the sealing plate and the test piece is sealed, leakage of the wet air is prevented, the detection precision is influenced, the test piece is enabled to be stressed uniformly through the sealing plate and the side plate in opposite directions, and the test precision is guaranteed.
Further, the adjusting device further comprises a detection assembly and a negative pressure air pipe, the detection assembly is fixedly connected with the bottom plate, the detection assembly comprises a mounting seat, electrode plates, an enrichment block and a screw rod module, the screw rod module is fixedly connected with the bottom plate, the output end of the screw rod module is in transmission connection with the mounting seat, a plurality of enrichment cavities are arranged on the mounting seat, the enrichment block is arranged in the enrichment cavities, the enrichment block is fixedly connected with the enrichment cavities, a sub-channel is arranged at the upper end of the enrichment cavity, the enrichment cavities are communicated with the sub-channel, the two sides of the sub-channel, which are close to one end of the enrichment cavity, are respectively provided with a detection cavity, two electrode plates of the same group are respectively arranged in the detection cavities, the two electrode plates of the same group are respectively electrically connected with a component detection circuit, the two electrode plates of the same group are oppositely arranged, and the negative pressure air pipe is communicated with a tail end pipeline of the sub-channel;
initial state: the mounting seat and the sealing plate are positioned on the same side of the test piece;
when detecting, the method comprises the following steps: the bearing plate is not contacted with the test piece, the lower side of the mounting seat is abutted with the test piece, and the enrichment cavity faces to the upper side surface of the test piece.
The test assembly is arranged to detect the crack resistance and the impermeability of the test piece, the single test assembly is used to detect the concrete performance under various simulation environments, the test structure is optimized, the mounting seat and the sealing plate are positioned at the same side of the test piece in an initial state, after the environment is simulated, the compression cylinder drives the bearing plate to move upwards so as to separate from the upper surface of the test piece, the screw rod module driven by the motor drives the mounting seat to move so that the mounting seat moves above the test piece, the enrichment cavity faces the upper surface of the test piece, when the impermeability is detected, due to the porous structure of the test piece, the moisture-containing air flow is also supplied at one side, the moisture-containing air flow can spread towards one side of the side plate along the porous structure of the test piece, the negative pressure air pipe is communicated with the negative pressure air source, and the low pressure is manufactured in the enrichment cavity through the pipeline communication, the method comprises the steps that moisture-bearing flows of a test piece are gathered in an enrichment cavity, the local cross-sectional area of the enrichment cavity is reduced through an enrichment block, the moisture-bearing flows are precompressed, the density of the moisture-bearing flows is increased, the conductivity of the moisture-bearing flows is increased, the precompressed and enriched moisture-bearing flows from the tail end of the enrichment cavity into a sub-runner and passes through a detection cavity, the moisture-bearing flows through a gap between two electrode plates, the two electrode plates in the same group are respectively electrically connected with a power supply to form a sorting circuit, the local permeability of the test piece is detected, in the detection process, a lead screw module drives a mounting seat to continuously transversely move, the upper surface of the test piece is sequentially detected, when the moisture-bearing flows enter the gap between the electrode plates, the local conductivity is increased, so that the sorting circuit is conducted, the lower the penetrating moisture-bearing flows are, and the smaller the current conducted by the sorting circuit is smaller the better the impermeability is; when crack resistance detects, because the multiunit that sets up detects the subassembly to carry out the local subregion to the test piece and detect, if the test piece does not crack, then a plurality of branch check circuit current tend to the standard value, if the test piece is local crack, then the porous structure of local concrete can't block the moisture-containing flow, and the moisture-containing flow is direct to flow up along the crack, causes full infiltration, makes the branch check circuit current value far exceeding the standard value this moment, compares a plurality of branch check circuit current values, thereby detects the compressive resistance of test piece.
Further, the enrichment block is in a 'water drop shape', the tail ends of the plurality of diversion channels are converged into a converging channel, and the outlet of the converging channel is communicated with the negative pressure air pipe.
Through enrichment piece water droplet type setting to enrich the moisture-bearing air current, through improving the unit density of moisture-bearing air current, improve the detection precision that follow-up circular telegram detected, through closing the branch road tail end to switch on with the converging channel, make the negative pressure in the branch road tend to the average value, ensure detection precision, carry out the energy supply through single negative pressure tuber pipe, reduce detection cost.
Further, a heating groove is arranged on the sealing plate, and an electric heating wire is arranged in the heating groove and used for heating the wet air flow sprayed out of the wet air pipe.
Install the heating wire through the temperature rising groove on the closing plate, when carrying out high temperature environment and detecting, heat the moisture-containing flow through the heating wire, when the moisture-containing flow direction test piece infiltration after the heating, also upwards permeate under buoyancy effect, improve detection efficiency.
As optimization, the roughness of the outer side of the enrichment block is larger than that of the wall surface of the enrichment cavity. Through roughness setting for when the wet gas flow flows along enrichment piece, the enrichment piece is bigger to the viscous resistance of wet gas flow, thereby makes the wet gas flow velocity gradient, and the wet gas flow upward flow in-process is laminated on enrichment piece surface, thereby enriches the wet gas flow.
Compared with the prior art, the invention has the following beneficial effects: when the permeability resistance detection is carried out, because the porous structure of the test piece is provided with a single side, the moisture-containing air flow can spread towards one side of the side plate along the porous structure of the test piece, the negative pressure air pipe is communicated with the negative pressure air source, and low pressure is manufactured in the enrichment cavity through the pipeline communication, so that the moisture-containing air flow of the test piece is gathered in the enrichment cavity, the local cross section area of the enrichment cavity is reduced through the enrichment block, the moisture-containing air flow is precompressed, the density of the moisture-containing air flow is increased, so that the conductivity of the moisture-containing air flow is increased, the precompressed and enriched moisture-containing air flow flows into the sub-flow channel from the tail end of the enrichment cavity and passes through the detection cavity, and flows through the gaps between the two electrode plates, and the two electrode plates in the same group are respectively and electrically connected with the power supply to form a sorting circuit, the local permeability of the test piece is detected, and in the detection process, the lead screw module drives the mounting seat to continuously move transversely, so that the upper surface of the test piece is sequentially detected, and when the moisture-containing air flow enters the inter-plate gaps of the enrichment cavity, the local conductivity is increased, so that the sorting circuit is conducted, the moisture-containing air flow is better, and the permeated current is smaller when the moisture-containing flow is detected in the detection circuit is in the detection process; when crack resistance detects, because the multiunit that sets up detects the subassembly to carry out the local subregion to the test piece and detect, if the test piece does not crack, then a plurality of branch check circuit current tend to the standard value, if the test piece is local crack, then the porous structure of local concrete can't block the moisture-containing flow, and the moisture-containing flow is direct to flow up along the crack, causes full infiltration, makes the branch check circuit current value far exceeding the standard value this moment, compares a plurality of branch check circuit current values, thereby detects the compressive resistance of test piece.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic general construction of the present invention;
FIG. 2 is a schematic view of the structure of the adjusting device of the present invention;
FIG. 3 is a schematic diagram of the detection state of the present invention;
FIG. 4 is an enlarged view of part A of the view of FIG. 3;
FIG. 5 is a schematic diagram of the detection assembly of the present invention;
FIG. 6 is an enlarged view of part B of the view of FIG. 5;
in the figure: 1-bearing device, 11-bottom plate, 12-mounting table, 13-portal frame, 2-adjusting device, 21-humidifying component, 211-wet pipe, 212-adjusting cylinder, 213-sealing plate, 2131-diversion cavity, 2132-heating tank, 22-detecting component, 221-mounting seat, 2211-enrichment cavity, 2212-diversion channel, 2213-detecting cavity, 2214-diversion channel, 222-electrode plate, 223-enrichment block, 224-screw module, 23-negative pressure air pipe, 24-heating wire, 3-pressing device, 31-crimping cylinder, 32-bearing plate, 4-side plate and 5-test piece.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides the technical scheme that:
as shown in fig. 1-2, a concrete performance detection device with multiple environment simulation function is used for detecting a test piece 5, and comprises a bearing device 1, an adjusting device 2 and a pressing device 3, wherein the bearing device 1 is connected with the adjusting device 2, the pressing device 3 is fixedly connected with the bearing device 1, the test piece 5 is arranged on the bearing device 1, the output end of the pressing device 3 faces to the upper surface of the test piece 5, and the adjusting device 2 is used for detecting the impermeability and the crack resistance of the test piece 5.
The bearing device 1 is used as a main installation base for installing other devices, and provides a bearing base for the test piece 5, the adjusting device 2 is used for providing a high-temperature and high-humidity environment, performing multi-environment simulation, detecting the impermeability and the cracking resistance of the test piece 5, the pressing device 3 is used for providing a pressure source for detecting the cracking resistance, and when the test piece 5 made of concrete is detected, an upper and lower bidirectional pressure test is adopted, the condition of the concrete block in the use process is simulated, and the test accuracy is improved.
As shown in fig. 1-3, the bearing device 1 comprises a bottom plate 11, an installation table 12 is arranged on the bottom plate 11, a test piece 5 is arranged on the installation table 12, a portal frame 13 is arranged on the bottom plate 11 in an upward extending mode, the portal frame 13 is fixedly connected with the bottom plate 11, the pressing device 3 is fixedly connected with a cross rod of the portal frame 13, the pressing device 3 comprises a pressing cylinder 31, a cylinder body of the pressing cylinder 31 is fixedly connected with the cross rod of the portal frame 13, a bearing plate 32 is arranged at the output end of the pressing cylinder 31, and the pressing cylinder 31 is fixedly connected with the bearing plate 32;
when the pressure is applied, the following steps are carried out: the lower surface of the bearing plate 32 is attached to the upper surface of the test piece 5, and the size of the bearing plate 32 is matched with the test piece 5.
The bottom plate 11 carries out spacingly to test piece 5 through mount table 12, install pressure applying device 3 through overhead portal frame 13, when carrying out the extrusion test, it is spacing by mount table 12 to have test piece 5 lower extreme, crimping jar 31 on portal frame 13 horizontal pole can be with bearing plate 32 pressure at test piece 5's upper surface, simulate concrete block main atress direction in the use, crimping jar 31 and bearing plate 32 can adopt detachable structure, be convenient for carry out the crimping test to test piece 5 of different specifications, when carrying out crack resistance test, bearing plate 32 and mount table 12 carry out two-way extrusion to test piece, bearing plate 32 size is according to test piece 5's size selection, in the process of exerting pressure, make test piece 5 upside carry out even atress, avoid local atress uneven damage, crack resistance detection precision is influenced.
As shown in fig. 1-3, the concrete performance detecting device further comprises a side plate 4, the adjusting device 2 comprises a humidity adjusting component 21, the humidity adjusting component 21 and the side plate 4 are arranged in opposite directions, the humidity adjusting component 21 and the side plate 4 are respectively and fixedly connected with two vertical plates of the portal frame 13, and the humidity adjusting component 21 is used for carrying out humidity environment test on the test piece 5.
After the pressurization by the pressurizing device 3 is completed, the moisture-containing air flow is supplied by the humidifying component 21, and because the hardened concrete is of a porous structure, the moisture-containing air flow can permeate the test piece 5, the permeability of the test piece 5 in a high-humidity environment is detected by supplying the moisture-containing air flow, the humidifying component 21 and the side plates 4 are oppositely arranged, and the forces applied to the two sides of the test piece 5 are equal in magnitude and opposite in direction during the test, so that the auxiliary positioning and the installation of the test piece 5 are performed.
As shown in fig. 1-4, the humidity adjusting component 21 comprises a wet air pipe 211, an adjusting cylinder 212 and a sealing plate 213, wherein the adjusting cylinder 212 is in fastening connection with a vertical plate of the portal frame 13, the output end of the adjusting cylinder 212 is in fastening connection with the sealing plate 213, the sealing plate 213 faces the side surface of the test piece 5, the sealing plate 213 and the side plate 4 are arranged in opposite directions, a flow guide cavity 2131 is arranged on the sealing plate 213, and the outlet of the wet air pipe 211 is communicated with a flow guide cavity 2131;
when humidity is regulated: the sealing plate 213 and the side plate 4 are respectively abutted against both side surfaces of the test piece 5.
The wet air pipe 211 is communicated with a wet air source, the pressurized wet air flow is fed into the diversion cavity 2131 of the sealing plate 213 through the wet air pipe 211, the side edge of the sealing plate 213 is abutted to the test piece 5, sealing is ensured through compaction, after the wet air flow enters the diversion cavity 2131, due to the permeability of the test piece 5 made of concrete, the wet air flow gradually spreads to the inside of the test piece 5, the single-side permeability of the test piece 5 is simulated, the single-side permeability of the test piece 5 in the use process is simulated, the regulating cylinder 212 is arranged on a vertical plate of the portal frame 13, the sealing plate 213 is driven to transversely move through output displacement, the contact position of the sealing plate 213 and the test piece 5 is sealed, leakage of the wet air flow is prevented, the detection precision is influenced, and the test piece 5 is uniformly stressed through opposite arrangement of the sealing plate 213 and the side plate 4, and the test precision is ensured.
As shown in fig. 5-6, the adjusting device 2 further includes a detecting component 22 and a negative pressure air pipe 23, the detecting component 22 is tightly connected with the bottom plate 11, the detecting component 22 includes a mounting seat 221, electrode plates 222, an enriching block 223 and a screw rod module 224, the screw rod module 224 is tightly connected with the bottom plate 11, the output end of the screw rod module 224 is in transmission connection with the mounting seat 221, the mounting seat 221 is provided with a plurality of enriching cavities 2211, the enriching block 223 is arranged in the enriching cavities 2211, the enriching blocks 223 are tightly connected with the enriching cavities 2211, the upper end of the enriching cavities 2211 is provided with a sub-channel 2212, the enriching cavities 2211 are communicated with the sub-channel 2212, two electrode plates 222 are respectively arranged in the detecting cavities 2213, two electrode plates 222 in the same group are respectively electrically connected with a component detecting circuit with a power supply, the two electrode plates 222 in the same group are oppositely arranged, and the negative pressure air pipe 23 is communicated with tail end channels of the sub-channel 2212;
initial state: the mounting seat 221 and the sealing plate 213 are positioned on the same side of the test piece 5;
when detecting, the method comprises the following steps: the bearing plate 32 is not contacted with the test piece 5, the lower side of the mounting seat 221 is abutted with the test piece 5, and the enrichment cavity 2211 faces to the upper side surface of the test piece 5.
By arranging the detection component 22 to detect the crack resistance and the impermeability of the test piece 5, detecting the concrete performance under various simulation environments through a single detection component 22, optimizing the detection structure, after the environment is simulated, the mounting seat 221 and the sealing plate 213 are positioned on the same side of the test piece 5, the pressure cylinder 31 drives the pressure bearing plate 32 to move upwards so as to separate from the upper surface of the test piece 5, the lead screw module 224 driven by a motor drives the mounting seat 221 to move above the test piece 5, the enrichment cavity 2211 faces the upper surface of the test piece 5, when the impermeability is detected, due to the porous structure of the test piece 5, the moisture-containing air flow is also supplied on one side, the moisture-containing air flow can spread along the porous structure of the test piece 5 to the side plate 4, the negative pressure air pipe 23 is communicated with the negative pressure air source, and low pressure is manufactured in the enrichment cavity 2211 through the pipeline communication, thereby gathering the moisture-containing air flow of the test piece 5 in the enrichment cavity 2211, reducing the local cross-sectional area of the enrichment cavity 2211 through the enrichment block 223, precompressing the moisture-containing air flow to increase the density of the moisture-containing air flow, thereby increasing the conductivity of the moisture-containing air flow, the precompressed moisture-containing air flow flows into the shunt channel 2212 from the tail end of the enrichment cavity 2211 and passes through the detection cavity 2213, flows through the inter-plate gap of the two electrode plates 222, and is electrically connected with a power supply respectively by the two electrode plates 222 in the same group to form a sorting circuit, detecting the local permeability of the test piece 5, in the detection process, the lead screw module 224 drives the mounting seat 221 to continuously move transversely, thereby sequentially detecting the upper surface of the test piece 5, when the moisture-containing air flow enters the inter-plate gap of the electrode plates 222, the local conductivity is increased, the sorting circuit is conducted, the permeated moisture-containing air flow is smaller as the impermeability is better, i.e. the smaller the current conducted by the sorting circuit; when crack resistance detection is carried out, because the multiunit detection component 22 that sets up to carry out local subregion to test piece 5 and detect, if test piece 5 does not crack, then a plurality of branch check circuit current tend to the standard value, if test piece 5 local crack, then the porous structure of local concrete can't block the moisture-containing flow, and the moisture-containing flow is direct to flow up along the crack, causes full infiltration, makes the branch check circuit current value far exceeding the standard value this moment, compares a plurality of branch check circuit current values, thereby detects the compressive resistance of test piece 5.
As shown in fig. 6, the enrichment block 223 is in a shape of a "water drop", the tail ends of the plurality of branch passages 2212 are converged into a converging passage 2214, and the outlet of the converging passage 2214 is in pipeline communication with the negative pressure air pipe 23.
Through enrichment piece 223 water droplet type setting to enrich the moisture-bearing flow, through improving the unit density of moisture-bearing flow, improve the detection precision that follow-up circular telegram detected, through converging the branch road 2212 tail end to switch on with the converging road 2214, make the negative pressure in the branch road 2212 tend to the average value, ensure detection precision, carry out the energy supply through single negative pressure tuber pipe 23, reduce detection cost.
As shown in fig. 4, the sealing plate 213 is provided with a heating tank 2132, and a heating wire 24 is provided in the heating tank 2132, and the heating wire 24 is used for heating the wet air flow ejected from the wet air pipe 211.
The heating wire 24 is installed through the heating groove 2132 on the sealing plate 213, when the high-temperature environment is detected, the moisture-containing air flow is heated through the heating wire 24, and when the heated moisture-containing air flow penetrates into the test piece 5, the heated moisture-containing air flow also penetrates upwards under the action of buoyancy, so that the detection efficiency is improved.
As optimization, the roughness of the outer side of the enrichment block 223 is larger than that of the wall surface of the enrichment cavity 2211. Through roughness setting for when the moisture-containing gas stream flows along enrichment piece 223, enrichment piece 223 is greater to the viscous resistance of moisture-containing gas stream, thereby makes the moisture-containing gas stream velocity gradient, and the in-process flows upward to the moisture-containing gas stream, laminating is at enrichment piece 223 surface, thereby enriches the moisture-containing gas stream.
The working principle of the invention is as follows: when the impermeability test is performed, because the porous structure of the test piece 5 is also provided with a single side, the moisture-containing air flow can spread along the porous structure of the test piece 5 towards one side of the side plate 4, the negative pressure air pipe 23 is communicated with the negative pressure air source, and low pressure is manufactured in the enrichment cavity 2211 through pipeline communication, so that the moisture-containing air flow of the test piece 5 flows into the enrichment cavity 2211, the local flow cross section area of the enrichment cavity 2211 is reduced through the enrichment block 223, the moisture-containing air flow is precompressed, the density of the moisture-containing air flow is increased, the conductivity of the moisture-containing air flow is increased, the precompressed and enriched moisture-containing air flow flows into the shunt channel 2212 from the tail end of the enrichment cavity 2211 and flows through the detection cavity 2213, the two electrode plates 222 in the same group are respectively electrically connected with a power supply to form a sorting circuit, the local permeability of the test piece 5 is detected, and in the detection process, the lead screw module 224 drives the mounting seat 221 to continuously transversely move, the upper surface of the test piece 5 is sequentially detected, and when the moisture-containing air flow enters the plate gap of the 222, the local permeability of the separation circuit is increased, and the conductivity is enabled to be smaller when the moisture-containing air flow flows into the gap, and the permeation circuit is smaller when the local permeability is smaller; when crack resistance detection is carried out, because the multiunit detection component 22 that sets up to carry out local subregion to test piece 5 and detect, if test piece 5 does not crack, then a plurality of branch check circuit current tend to the standard value, if test piece 5 local crack, then the porous structure of local concrete can't block the moisture-containing flow, and the moisture-containing flow is direct to flow up along the crack, causes full infiltration, makes the branch check circuit current value far exceeding the standard value this moment, compares a plurality of branch check circuit current values, thereby detects the compressive resistance of test piece 5.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. Concrete performance detection device with multiple environment simulation function, concrete performance detection device is used for detecting test piece (5), its characterized in that: the concrete performance detection device comprises a bearing device (1), an adjusting device (2) and a pressing device (3), wherein the bearing device (1) is connected with the adjusting device (2), the pressing device (3) is fixedly connected with the bearing device (1), the test piece (5) is arranged on the bearing device (1), the output end of the pressing device (3) faces to the upper surface of the test piece (5), and the adjusting device (2) is used for detecting the impermeability and the crack resistance of the test piece (5);
the bearing device (1) comprises a bottom plate (11), an installation table (12) is arranged on the bottom plate (11), the test piece (5) is arranged on the installation table (12), a portal frame (13) is arranged on the bottom plate (11) in an upward extending mode, the portal frame (13) is fixedly connected with the bottom plate (11), the pressing device (3) is fixedly connected with a cross rod of the portal frame (13), the pressing device (3) comprises a pressing cylinder (31), a cylinder body of the pressing cylinder (31) is fixedly connected with the cross rod of the portal frame (13), a bearing plate (32) is arranged at the output end of the pressing cylinder (31), and the pressing cylinder (31) is fixedly connected with the bearing plate (32);
when the pressure is applied, the following steps are carried out: the lower surface of the bearing plate (32) is attached to the upper surface of the test piece (5), and the size of the bearing plate (32) is matched with that of the test piece (5);
the concrete performance detection device further comprises a side plate (4), the adjusting device (2) comprises a humidity adjusting component (21), the humidity adjusting component (21) and the side plate (4) are arranged in opposite directions, the humidity adjusting component (21) and the side plate (4) are respectively and fixedly connected with two vertical plates of the portal frame (13), and the humidity adjusting component (21) is used for carrying out humidity environment test on the test piece (5);
the humidifying assembly (21) comprises a wet air pipe (211), an adjusting cylinder (212) and a sealing plate (213), wherein the adjusting cylinder (212) is fixedly connected with a vertical plate of the portal frame (13), the output end of the adjusting cylinder (212) is fixedly connected with the sealing plate (213), the sealing plate (213) faces the side surface of the test piece (5), the sealing plate (213) and the side plate (4) are oppositely arranged, a diversion cavity (2131) is formed in the sealing plate (213), and an outlet of the wet air pipe (211) is communicated with a pipeline of the diversion cavity (2131);
when humidity is regulated: the sealing plate (213) and the side plate (4) are respectively abutted against two side surfaces of the test piece (5);
the adjusting device (2) further comprises a detection assembly (22) and a negative pressure air pipe (23), the detection assembly (22) is fixedly connected with the bottom plate (11), the detection assembly (22) comprises a mounting seat (221), an electrode plate (222), an enrichment block (223) and a screw rod module (224), the screw rod module (224) is fixedly connected with the bottom plate (11), the output end of the screw rod module (224) is in transmission connection with the mounting seat (221), a plurality of enrichment cavities (2211) are arranged on the mounting seat (221), the enrichment block (223) is arranged in the enrichment cavities (2211), the enrichment block (223) is fixedly connected with the enrichment cavities (2211), a sub-channel (2212) is arranged at the upper end of the enrichment cavity (2211) and is communicated with the sub-channel (2212), detection cavities (2213) are respectively arranged at two sides of one end of the sub-channel (2212), two electrode plates (222) are respectively arranged in the detection cavities (2213), two power sources of the same group are respectively connected with two electric channels, and the two sub-channels (2212) are respectively communicated with the sub-channel (2212), and the sub-channels (2212) are respectively connected with each other through the sub-channel;
initial state: the mounting seat (221) and the sealing plate (213) are positioned on the same side of the test piece (5);
when detecting, the method comprises the following steps: the bearing plate (32) is not contacted with the test piece (5), the lower side of the mounting seat (221) is abutted with the test piece (5), and the enrichment cavity (2211) faces to the upper side surface of the test piece (5).
2. The concrete performance detection device with multiple environment simulation function according to claim 1, wherein: the enrichment block (223) is in a 'water drop shape', the tail ends of the plurality of diversion channels (2212) are converged into a converging channel (2214), and the outlet of the converging channel (2214) is communicated with the negative pressure air pipe (23) through a pipeline.
3. The concrete performance detection device with multiple environment simulation function according to claim 2, wherein: the sealing plate (213) is provided with a heating groove (2132), the heating groove (2132) is internally provided with an electric heating wire (24), and the electric heating wire (24) is used for heating the wet air flow sprayed out by the wet air pipe (211).
4. The concrete performance detection device with multiple environment simulation function according to claim 2, wherein: the roughness of the outer side of the enrichment block (223) is larger than that of the wall surface of the enrichment cavity (2211).
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| CN117969327B (en) * | 2024-03-01 | 2024-08-09 | 徐州市帝龙新型墙体材料有限公司 | Concrete haydite building block detection device |
| CN117969290B (en) * | 2024-03-28 | 2024-06-04 | 中一达建设集团有限公司 | Concrete strength detection device with environment simulation function |
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