CN108132206B - Water absorption rate testing device for recycled sand-free porous concrete - Google Patents
Water absorption rate testing device for recycled sand-free porous concrete Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 16
- 238000005303 weighing Methods 0.000 claims abstract description 19
- 230000005674 electromagnetic induction Effects 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims 1
- 230000006698 induction Effects 0.000 claims 1
- 230000008929 regeneration Effects 0.000 claims 1
- 238000011069 regeneration method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 description 17
- 238000010276 construction Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000008054 signal transmission Effects 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
- 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
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
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Abstract
The invention belongs to the field of concrete characteristic test, and particularly relates to a water absorption testing device for recycled sand-free porous concrete. The invention mainly comprises a sand-free concrete sample and container, a water level sensing subsystem, a flow control subsystem, a water supply device and a weighing display subsystem. The landslide test device has the functions of controllable water quantity adjustment and automatic weight measurement, realizes the automation of a test process, improves the test efficiency, reduces the working strength of experimenters, and greatly improves the scientificity, reliability and automation degree of a landslide test process.
Description
Technical Field
The invention belongs to the field of concrete characteristic test, and particularly relates to a water absorption testing device for recycled sand-free porous concrete.
Background
With the urbanization process and the accelerated development of the building industry in China, more and more construction wastes are generated by newly built buildings and old buildings and the demolition of the buildings, and the construction wastes in China have huge yield and are difficult to treat. In the face of the problem of treatment of construction waste, the traditional landfill method not only pollutes the environment, but also causes waste of resources. The vegetation ecological concrete developed by using the building waste fragments as aggregates meets the requirements of engineering slope protection and vegetation growth, and the utilization of the building waste resource recycling recycled coarse aggregates is an effective way for solving the problem of building waste wastes.
The sand-free porous concrete is prepared by mixing cement, coarse aggregates and water, and the porosity of the sand-free concrete is higher because the sand-free porous concrete does not contain fine aggregates. Compared with common concrete, the sand-free concrete has the characteristics of small stacking density, small cement consumption, insignificant capillary phenomenon of water and good water and air permeability. The sand-free concrete has the advantages of low raw material cost, simple and convenient process, easy implementation and obvious social and economic benefits. Natural resources in China are relatively poor, the quantity of raw materials required by traditional concrete materials is large, meanwhile, construction waste can be used as a renewable sand-free concrete raw material, and the contradiction between construction waste disposal, the sand-free concrete raw material and the resource environment is effectively relieved, so that the method and the means for enhancing the research work of the construction waste sand-free concrete are important methods and means for green, low-carbon and sustainable development.
The water absorption has important influence on the properties of the sand-free porous concrete regenerated from the building waste coarse aggregate, and is also an important index for evaluating the properties of the sand-free porous concrete regenerated from the building waste coarse aggregate, so that the research and development of a set of tests for the water absorption of the sand-free porous concrete regenerated from the building waste coarse aggregate is particularly important.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a water absorption testing device for regenerated sand-free porous concrete.
The technical scheme of the invention is realized as follows: a cylindrical container is placed on the weighing device, a water delivery pipe is placed above the cylindrical container, a clamp holder is installed on the water delivery pipe, the other end of the water delivery pipe is connected with a container bottle, and the container bottle is fixed with the weighing sensorThe weighing sensor is fixedly connected with the computer through a wire, the weighing sensor is fixedly arranged at the upper part of the upright stanchion, and the bottom of the upright stanchion is provided with a triangular bracket; the middle part of the cylindrical container is a sample area, the bottom of the cylindrical container is arranged below the sample area, and A is arranged above the sample area2Is provided with a second liquid level sensor at A2Lower side A3Is provided with a third liquid level sensor A3In the range of the sample area, at A2Upper side A1A first liquid level sensor is arranged at the position of the buzzer, the first liquid level sensor, the second liquid level sensor and the third liquid level sensor are connected with an analog-digital converter through leads, the first liquid level sensor, the second liquid level sensor and the third liquid level sensor are connected in parallel, the analog-digital converter is connected with the processor through leads, and one side of the processor is connected with the buzzer through leads; the other side of the processor is connected with the wireless data transmitter through a lead, the wireless data receiver is connected with the data processor through a lead, the data processor is connected with the controller through a lead, the controller is connected with the first resistor through a lead, the first resistor is connected with the triode through a lead, the triode comprises a base electrode, a collector electrode and an emitter electrode, and the collector electrode is connected with the lead B1Is connected with a second resistor; an electromagnetic induction device is arranged in the holder, and a collector passes through a lead B2Connected with one end of the electromagnetic induction device, and the controller and the emitter pass through a lead B3The clamp is connected with the other end of the electromagnetic induction device, a first spring is installed on one side of the electromagnetic induction device, a second spring is installed on the other side of the electromagnetic induction device, a first metal sheet is installed on the inner wall of the clamp corresponding to one end of the electromagnetic induction device, a second metal sheet is installed on the inner wall of the clamp corresponding to the other end of the electromagnetic induction device, and an upper port of the clamp and a lower port of the clamp are installed on the other side of the second spring.
Preferably, the height of the cylindrical container is H1The diameter of the bottom of the cylindrical container is D1Height of sample area H2The height of the upper part of the sample area is H3The height of the lower part of the sample area is H4And has H1=H2+H3+H4,H1Has a value in the range of 30cm ~ 40cm, D1The value of (A) may range from 10cm to 15 cm.
Preferably, A is2At the position of the horizontal line at the top of the sample area, A1In position A2At the upper 2cm position, A3In position A2At the 2cm position below.
The invention mainly comprises a sand-free concrete sample and container, a water level sensing subsystem, a flow control subsystem, a water supply device and a weighing display subsystem. The landslide test device has the functions of controllable water quantity adjustment and automatic weight measurement, realizes the automation of a test process, improves the test efficiency, reduces the working strength of experimenters, and greatly improves the scientificity, reliability and automation degree of a landslide test process.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a diagram of a water supply device and a weighing display subsystem according to the present invention.
FIG. 2 is a view showing the construction of a cylinder type container of the present invention.
FIG. 3 is a diagram of a water level sensing subsystem of the present invention.
FIG. 4 is a diagram of a flow control subsystem of the present invention.
Fig. 5 is a structural view of an electromagnetic induction device of the present invention.
Fig. 6 is a schematic view of the structure of the holder of the present invention.
1 cylinder type container, 2 cylinder type container bottoms, 3 sample district, 4 first level sensor, 5 second level sensor, 6 third level sensor, 7 analog-to-digital converter, 8 processors, 9 wireless data transmitter, 10 wireless data receiver, 11 data processor, 12 controllers, 13 first resistance, 14 triode, 15 second resistance, 16 coil iron cores, 17 enameled wire coil, 18 thA spring, 19 electromagnetic induction devices, 20 second springs, 21 holders, 22 bottles, 23 bottle mouths, 24 water pipes, 25 weighers, 26 weighing sensors, 27 computers, 28 vertical rods, 29 triangular supports, 30 first metal sheets, 31 second metal sheets, 32 buzzers, b bases, c collectors, E emitters, E emitters1Upper end opening of holder, E2A clamp lower port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
Example 1: a device for testing the water absorption of recycled sand-free porous concrete is characterized in that firstly, building waste is finely classified, for example, waste concrete is selected; secondly, manually and mechanically crushing the waste concrete to obtain a regenerated non-sand concrete coarse aggregate with a certain particle size; then, mixing and stirring the obtained recycled coarse aggregate with cement and water, then placing the obtained mixture into a container for curing, obtaining a sand-free concrete sample after a period of time, placing the sand-free concrete sample into the sample area 3 area of the cylindrical container 1, enabling the sand-free concrete sample to completely fill the cylindrical container 1 in the sample area 3 without gaps, then placing the cylindrical container 1 on a weighing device 25, and displaying the weight of the cylindrical container 1 in real time through the weighing device 25 for a test worker to read timely. Place raceway 24 above cylinder type container 1, install holder 21 on raceway 24, the raceway 24 other end links to each other with container bottle 22, container bottle 22 and weighing sensor 26 fixed connection, weighing sensor 26 passes through the wire and is connected with computer 27, the weight of container bottle 22 is converted into digital analog signal after being sensed by weighing sensor 26 and is transmitted for computer 27 through the wire and handle and show, weighing sensor 26 fixed mounting is on pole setting 28 upper portion, triangular supports 29 is installed to pole setting 28 bottom.
At position A of the cylindrical container 11A first liquid level sensor 4 is arranged for sensing the position A1The water volume condition; at position A of the cylindrical container 12A second liquid level sensor 5 is arranged for sensing the position A2The moisture content condition of (c); at position A of the cylindrical container 13A third liquid level sensor 6 is arranged for sensing the position A3The amount of water in the process. First level sensor 4, second level sensor 5, the water content condition conversion that third level sensor 6 will sense is analog signal volume, then give analog signal volume analog digital converter 7 through the wire transmission again, after analog digital converter 7's conversion, obtain digital signal, give processor 8 with the digital signal transmission who obtains again, after the operation processing of processor 8, launch away the gained result through wireless data transmitter 9, whether processor 9 decides to let bee calling organ 32 send alarm information according to the handling result simultaneously.
The information transmitted by the wireless data transmitter 9 is received by the wireless data receiver 10, the data processor 11 processes the data received by the receiver 10, and transmits the result to the controller 12, and the output end of the controller 12 is connected to an amplifying circuit. The amplifying circuit is composed of a resistor 13, a triode 14 and a resistor 15, wherein the triode 14 is an NPN type triode, b is a base electrode of the NPN type triode, c is a collector electrode of the NPN type triode, and e is an emitting electrode of the NPN type triode. Base electrode B, collector electrode c, emitter electrode e, collector electrode c passing through wire B1Connected with a second resistor 15;
an electromagnetic induction device 19 is arranged in the holder 21, the electromagnetic induction device 19 mainly comprises a coil iron core 16 and an enameled wire coil 17, and when an electric current flows through the electromagnetic induction device 19, the coil iron core 16 and the enameled wire coil 17 generate a magnetic field. Collector c is connected with lead B2C with electromagnetic induction means 191The terminals are connected, and the controller 12 and the emitter e are connected through a lead B3C with electromagnetic induction means 192The ends are connected, a first spring 18 is arranged on one side of an electromagnetic induction device 19, a second spring 20 is arranged on the other side of the electromagnetic induction device 19, and a first electromagnetic induction device 19A first metal sheet 30 is arranged on the inner wall of the holder 21 corresponding to the end, a second metal sheet 31 is arranged on the inner wall of the holder 21 corresponding to the other end of the electromagnetic induction device 19, and an upper holder port E is arranged on the other side of the second spring 201Clamp lower port E2. When no current flows through the electromagnetic induction device 19, the first spring 18 and the second spring 20 are in a natural extension state, and the upper port E of the clamp holder1And a holder lower port E2In the open state, the water pipe 24 passing through the water pipe is not clamped; when the electromagnetic induction device 19 has current flowing through, the action of the electromagnetic field of the electromagnetic induction device 19 generates an attraction force on the first metal sheet 30 and the second metal sheet 31, so that the first spring 18 and the second spring 20 are in a compressed state, and the upper port E of the clamp holder1Clamp lower port E2In a clamped state, thereby clamping the water duct 24 and finally shutting off the water flow.
Before the test begins, the weight M of the cylindrical container 1 with the recycled non-sand concrete sample on the weighing device 25 is first read1And the weight M of the cylindrical container 1 when the recycled non-sand concrete is not filled2Thereby obtaining the weight M of the recycled non-sand concrete sample for testing3,M3=M1-M2. When the liquid level in the cylindrical container 1 is lower than A3When the system calculates and analyzes the data in real time, the line of the electromagnetic induction device 19 is disconnected, so that the holder 21 is kept in an open state, and the water pipe 24 is smooth; when the liquid level in the cylindrical container 1 reaches A2When the system calculates and analyzes data in real time, the system switches on the circuit of the electromagnetic induction device 19 to ensure that the clamp 21 keeps a clamping state and the water pipe 24 is cut off; when the liquid level of the cylindrical container 1 reaches A1When the system calculates and analyzes data in real time, the circuit of the electromagnetic induction device 19 is switched on, so that the clamp 21 keeps a clamping state, the water pipe 24 is cut off, the buzzer 32 sends out an alarm signal, and test workers perform manual processing after receiving the alarm signal. When the test is normally finished, the computer 27 automatically calculates the total water consumption M of the whole test4The water absorption rate and water absorption of the regenerated sand-free porous concrete of the type used in the test can be obtainedThe rate is calculated in the manner of M4/M3。
Example 2: a device for testing the water absorption of recycled sand-free porous concrete is disclosed in example 1, wherein the height of a cylindrical container 1 is H1The diameter of the cylindrical container bottom 2 is D1The height of the sample area 3 is H2The height of the upper part of the sample area 3 is H3The height of the lower part of the sample area 3 is H4And has H1=H2+H3+H4,H1Has a value of 30cm, D1The numerical range of (2) may be 10cm, and the other structures are the same as those of example 1.
Example 3: a device for testing the water absorption of recycled sand-free porous concrete is disclosed in example 1, wherein the height of a cylindrical container 1 is H1The diameter of the cylindrical container bottom 2 is D1The height of the sample area 3 is H2The height of the upper part of the sample area 3 is H3The height of the lower part of the sample area 3 is H4And has H1=H2+H3+H4,H1Has a value in the range of 40cm, D1The numerical range of (2) can be 15cm, and the other structures are the same as those of example 1.
Example 4: a reclaimed sand-free porous concrete water absorption testing device is based on example 1, wherein A2 is positioned at the top horizontal line of a sample area 3, A1 is positioned at a position 2cm above A2, A3 is positioned at a position 2cm below A2, and the other structures are the same as example 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. The utility model provides a porous concrete water absorption testing arrangement of regeneration no sand, includes weigher (25), characterized by: a cylindrical container (1) is placed on the weighing device (25), a water pipe (24) is placed above the cylindrical container (1), a clamp holder (21) is installed on the water pipe (24), and the other end of the water pipe (24) and the container bottle(22) The container bottle (22) is fixedly connected with a weighing sensor (26), the weighing sensor (26) is connected with a computer (27) through a lead, the weighing sensor (26) is fixedly arranged at the upper part of an upright post (28), and a triangular bracket (29) is arranged at the bottom of the upright post (28); the middle part of the cylindrical container (1) is a sample area (3), the bottom part of the cylindrical container (2) is arranged below the sample area (3), and A is arranged above the sample area (3)2Is provided with a second liquid level sensor (5) at A2Lower side A3Is provided with a third liquid level sensor (6), A3In the area of the sample zone (3) at A2Upper side A1A first liquid level sensor (4) is arranged at the position, the first liquid level sensor (4), a second liquid level sensor (5) and a third liquid level sensor (6) are connected with an analog-digital converter (7) through leads, the first liquid level sensor (4), the second liquid level sensor (5) and the third liquid level sensor (6) are connected in parallel, the analog-digital converter (7) is connected with a processor (8) through leads, and one side of the processor (8) is connected with a buzzer (32) through leads; the other side of the processor (8) is connected with the wireless data transmitter (9) through a lead, the wireless data receiver (10) is connected with the data processor (11) through a lead, the data processor (11) is connected with the controller (12) through a lead, the controller (12) is connected with the first resistor (13) through a lead, the first resistor (13) is connected with the triode (14) through a lead, the triode (14) comprises a base electrode (B), a collector electrode (c) and an emitter electrode (e), and the collector electrode (c) is connected with the lead (B)1) Is connected with a second resistor (15); an electromagnetic induction device (19) is arranged in the holder (21), and a collector (c) passes through a lead (B)2) C with electromagnetic induction means (19)1The ends are connected, the controller (12) and the emitter (e) are connected through a lead (B)3) C with electromagnetic induction means (19)2The ends are connected, the electromagnetic induction device (19) comprises a coil iron core (16), an enameled wire coil (17) is wound outside the coil iron core (16), a first spring (18) is installed on one side of the electromagnetic induction device (19), a second spring (20) is installed on the other side of the electromagnetic induction device (19), and electricity is chargedA first metal sheet (30) is arranged on the inner wall of the holder (21) corresponding to one end of the magnetic induction device (19), a second metal sheet (31) is arranged on the inner wall of the holder (21) corresponding to the other end of the electromagnetic induction device (19), and an upper port (E) of the holder is arranged on the other side of the second spring (20)1) Clamp lower port (E)2)。
2. The device for testing the water absorption of the recycled sand-free porous concrete according to claim 1, which is characterized in that: the height of the cylindrical container (1) is H1The diameter of the bottom (2) of the cylindrical container is D1The height of the sample area (3) is H2The height of the upper part of the sample area (3) is H3The height of the lower part of the sample area (3) is H4And has H1=H2+H3+H4,H1Has a value in the range of 30cm ~ 40cm, D1The numerical range of (A) is 10cm-15 cm.
3. The device for testing the water absorption of the recycled sand-free porous concrete according to claim 1, which is characterized in that: a. the2At the top horizontal line position A of the sample area (3)1In position A2At the upper 2cm position, A3In position A2At the 2cm position below.
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CN109813626B (en) | 2019-03-28 | 2023-10-20 | 青岛理工大学 | Concrete water absorption testing device parallel to holding action direction |
CN110006773A (en) * | 2019-04-19 | 2019-07-12 | 四川省劲腾环保建材有限公司 | A method of it prepares in extruding slag pottery and detects water absorption rate |
CN112964620B (en) * | 2021-02-05 | 2022-06-10 | 浙江大学 | Device and method for continuously measuring capillary water absorption coefficient of porous material |
CN114486678B (en) * | 2022-01-14 | 2024-05-03 | 东南大学 | Device and method for rapidly detecting microscopic pore characteristics of concrete surface mortar |
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