CN211505531U - Device for testing heavy metal adsorption capacity of pervious concrete pavement structure - Google Patents
Device for testing heavy metal adsorption capacity of pervious concrete pavement structure Download PDFInfo
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- CN211505531U CN211505531U CN201921673779.8U CN201921673779U CN211505531U CN 211505531 U CN211505531 U CN 211505531U CN 201921673779 U CN201921673779 U CN 201921673779U CN 211505531 U CN211505531 U CN 211505531U
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Abstract
The utility model discloses a device for testing concrete road surface structure heavy metal adsorption capacity permeates water, including the circulating device that permeates water, test piece storage cylinder and a plurality of test solution collecting element of upper and lower interval setting on the lateral wall of test piece storage cylinder, every test solution collecting element includes horizontal pipe and vertical pipe, the one end of horizontal pipe is connected on the lateral wall of test piece storage cylinder, the other end links to each other with the bottom of vertical pipe, the circulating device that permeates water includes the collection liquid container, the bottom of test piece storage cylinder is connected with first transfer line, install the governing valve on the first transfer line, the export of first transfer line is located collection liquid container directly over, the bottom of collection liquid container is connected with the second transfer line, install the water pump on the second transfer line, the export of second transfer line is located test piece storage cylinder directly over. The device simple structure, easily operation can carry out the heavy metal adsorption capacity's of pervious concrete test piece rapid detection, provide the reference for the construction of pervious concrete road surface.
Description
Technical Field
The utility model relates to a concrete field of permeating water specifically is a device for testing concrete road surface structure heavy metal adsorption capacity of permeating water.
Background
The pervious concrete, also called porous concrete, sand-free concrete and pervious terrace, is a porous light concrete mixed by coarse aggregate, cement and water, it does not contain fine aggregate, coat a thin layer of cement paste on the surface of coarse aggregate and cohere each other to form the cellular structure with evenly distributed pore cavities, so it has the characteristics of air permeability, pervious to water and light weight. Due to the characteristics, when the permeable concrete is adopted for paving the pavement, rainwater can flow into the ground, underground water is effectively supplemented, the problem that the underground water level of a city is rapidly reduced and the like is solved, so that the permeable concrete is an excellent paving material for protecting the underground water, maintaining ecological balance, alleviating urban heat island effect and promoting surface water circulation, is favorable for benign development of human living environment and prevention and control of urban rainwater management and water pollution, and has special important significance on the work of improving the problem of urban development secondary environment and the like.
Because of unreasonable emission of some factories at present, the heavy metal ion content in surface water is too high, and the pervious concrete has a certain effect on solidifying the heavy metal ions due to the unique pore structure of the pervious concrete. At present, the heavy metal ion detection research on common pervious concrete is less in China, especially, the research on how to detect when the capability of the pervious concrete for solidifying the heavy metal ions reaches saturation is less, the solution concentration comparison is mostly performed after the pervious concrete is passed through once, if the solidification capability is required to be obtained, repeated experiments are needed, the process is complex, and the cost of manpower is large.
Disclosure of Invention
The utility model aims to solve the technical problem that, to prior art not enough, provide a device for testing concrete road surface structure heavy metal adsorption capacity permeates water, the device simple structure, easily operation can carry out the short-term test of the heavy metal adsorption capacity of the concrete test piece that permeates water, provide the reference for the construction of the concrete road surface that permeates water.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a device for testing heavy metal adsorption capacity of a pervious concrete pavement structure comprises a pervious circulation device, a test piece storage barrel and a plurality of test solution collecting units, wherein the upper part of the test piece storage barrel is opened and vertically arranged, the test solution collecting units are arranged on the side wall of the test piece storage barrel at intervals from top to bottom, each test solution collecting unit comprises a horizontal pipe and a vertical pipe which are communicated, one end of the horizontal pipe is connected to the side wall of the test piece storage barrel and communicated with the inner cavity of the test piece storage barrel, the other end of the horizontal pipe is connected with the bottom end of the vertical pipe, the upper part of the vertical pipe is opened, the pervious circulation device comprises a liquid collecting container with an upper opening, the bottom of the test piece storage barrel is connected with a first liquid conveying pipe, the first liquid conveying pipe is provided with a regulating valve, the outlet of the first liquid conveying pipe is positioned right above the liquid collecting container, the bottom of the liquid collecting container is connected with a second liquid conveying pipe, a water pump is installed on the second liquid conveying pipe, and an outlet of the second liquid conveying pipe is located right above the test piece storage barrel.
The device is simple in structure and easy to operate, can be used for quickly detecting the heavy metal adsorption capacity of the pervious concrete test piece, and provides reference basis for construction of the pervious concrete pavement.
Before the test, after smearing the sealant on the side surface of the pervious concrete test piece, wrapping the pervious concrete test piece layer by using a rubber piece, smearing the sealant on the outer surface of the rubber piece, then putting the pervious concrete test piece into the test piece storage barrel, slightly rotating the pervious concrete test piece and pushing the test piece to a proper height, so that the pervious concrete test piece is in full contact with the inner wall of the test piece storage barrel to prevent side leakage, and fixing the pervious concrete test piece in the test piece storage barrel after the sealant is solidified. The concrete test piece that permeates water that contains the one deck permeable bed of this device can be tested, also can test the concrete test piece that permeates water that contains the multilayer permeable bed. The test contains the concrete test piece that permeates water of multilayer permeable bed, only need put into in proper order each layer of test piece from top to bottom in proper order and fix in the test piece storage cylinder to the bottom surface that makes every layer of permeable bed is located more than the up end of an adjacent horizontal pipe can.
During testing, the regulating valve is closed firstly, a proper amount of solution containing heavy metal ions is added into the liquid collecting container, then the water pump is opened, the solution enters the test piece storage barrel through the second liquid conveying pipe and flows through the pervious concrete test piece from top to bottom, the heavy metal ions are absorbed by the pervious concrete test piece, and the solution with the reduced content of the heavy metal ions falls into the bottom of the test piece storage barrel and flows into the liquid collecting container through the first liquid conveying pipe. The first infusion tube, the water pump, the second infusion tube and the test piece storage barrel form a water circulation system, the amount of heavy metal ions absorbed by the pervious concrete test piece is gradually increased along with the water circulation, the heavy metal ion concentration is detected and recorded by a heavy metal ion concentration detector by collecting corresponding amount of solution in the vertical tubes at different moments, and when the concentration of a certain heavy metal ion is the same at two continuous moments, the adsorption capacity of the pervious concrete test piece on the heavy metal ion is saturated.
Preferably, the height adjusting device further comprises an adjusting unit for adjusting the height of the test piece storage barrel, the adjusting unit comprises a plurality of adjusting bolts, a first mounting plate and a second mounting plate which are arranged up and down, the first mounting plate and the second mounting plate are connected through the plurality of adjusting bolts, a silica gel gasket is arranged between the first mounting plate and the second mounting plate, a first round hole is formed in the first mounting plate, a second round hole is formed in the second mounting plate, the diameter of the first round hole is matched with the outer diameter of the test piece storage barrel, the diameter of the second round hole is smaller than the inner diameter of the test piece storage barrel, the test piece storage barrel comprises a first barrel body and a second barrel body which are arranged up and down and communicated, the first barrel body, the second mounting plate and the second barrel body are sequentially overlapped up and down, the bottom end of the first barrel body is arranged in the first round hole, the inner end of the second mounting plate extends into the inner cavity of the test piece storage barrel, and the bottom end of the second barrel is mounted on a bottom plate. The adjusting unit is simple in structure and easy to adjust, and the height of the test piece storage barrel can be adjusted by rotating each adjusting bolt during adjustment. The silica gel gasket plays a role in sealing and can prevent solution leakage.
Preferably, a first sprinkler head is mounted at an outlet of the first infusion tube, and a second sprinkler head is mounted at an outlet of the second infusion tube. The arrangement of the first sprinkler head and the second sprinkler head ensures that the solution flowing out is more dispersed, the inflow area of the solution can be enlarged, the turbidity of the solution is increased, and the test accuracy is improved.
Preferably, the test piece storage cylinder, the horizontal pipe, the vertical pipe, the liquid collecting container, the first infusion pipe and the second infusion pipe are all made of organic glass products.
Preferably, the horizontal pipe and the vertical pipe are connected through a right-angle elbow, so that the assembly is convenient, the vertical pipes with different lengths can be conveniently replaced, and the requirements of detecting the liquid taking amount of different solutions are met.
Preferably, the number of the sample solution collecting units is 3.
Compared with the prior art, the utility model has the advantages of as follows: the utility model discloses a device for testing concrete road surface structure heavy metal adsorption capacity permeates water, simple structure, easily operation can carry out the heavy metal adsorption capacity's of the concrete sample that permeates water short-term test, provides the reference foundation for the construction of the concrete road surface that permeates water.
Drawings
FIG. 1 is a schematic view of the structural connection of the device of the present invention;
FIG. 2 is an effect diagram after the test piece is fixed when the test object of the device of the utility model is a pervious concrete test piece comprising a pervious layer;
FIG. 3 is an effect diagram after the test piece is fixed when the test object of the device of the utility model is a pervious concrete test piece comprising two pervious layers;
fig. 4 is the utility model discloses when the test object of device is for the concrete test piece that permeates water that contains the three-layer permeable bed, the fixed back effect picture of test piece.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
The device for testing heavy metal adsorption capacity of the permeable concrete pavement structure of example 1 is shown in fig. 1, and comprises a permeable circulation device 1, a test piece storage barrel 2 and 3 test solution collection units 3, wherein the upper part of the test piece storage barrel 2 is open and vertically arranged, the 3 test solution collection units 3 are vertically arranged on the side wall of the test piece storage barrel 2 at intervals, each test solution collection unit 3 comprises a horizontal pipe 31 and a vertical pipe 32 which are communicated, the horizontal pipe 31 and the vertical pipe 32 are connected through a right-angle elbow 33, one end of the horizontal pipe 31 is connected to the side wall of the test piece storage barrel 2 and communicated with the inner cavity of the test piece storage barrel 2, the other end of the horizontal pipe 31 is connected with the bottom end of the vertical pipe 32, the upper part of the vertical pipe 32 is open, the permeable circulation device 1 comprises a liquid collection container 11 with an upper opening, the bottom of the test piece storage barrel 2 is connected with a first liquid conveying pipe 12, a regulating valve, an outlet of the first infusion tube 12 is positioned right above the liquid collecting container 11, a first sprinkler 13 is installed at the outlet of the first infusion tube 12, a second infusion tube 14 is connected to the bottom of the liquid collecting container 11, a water pump 15 is installed on the second infusion tube 14, an outlet of the second infusion tube 14 is positioned right above the test piece storage barrel 2, and a second sprinkler 16 is installed at the outlet of the second infusion tube 14.
The device for testing heavy metal adsorption capacity of the pervious concrete pavement structure of the embodiment 2 is, as shown in fig. 1, different from the embodiment 1, in that the embodiment 2 further includes an adjusting unit for adjusting the height of the specimen storage cylinder 2, the adjusting unit includes 8 adjusting bolts 43 and a first mounting plate 41 and a second mounting plate 42 which are arranged up and down, the 8 adjusting bolts 43 are arranged in a rectangular array around the central axis of the first mounting plate 41 and the second mounting plate 42, the first mounting plate 41 and the second mounting plate 42 are connected through the 8 adjusting bolts 43, a silica gel gasket (not shown in the figure) is arranged between the first mounting plate 41 and the second mounting plate 42, the first mounting plate 41 is provided with a first circular hole 44, the second mounting plate 42 is provided with a second circular hole 45, the diameter of the first circular hole 44 is matched with the outer diameter of the specimen storage cylinder 2, the diameter of the second circular hole 45 is smaller than the inner diameter of the specimen storage cylinder 2, the test piece storage barrel 2 comprises a first barrel body 21 and a second barrel body 22 which are arranged up and down and communicated with each other, the first barrel body 21, a second mounting plate 42 and the second barrel body 22 are sequentially overlapped up and down, the bottom end of the first barrel body 21 is mounted in a first round hole 44, the inner end of the second mounting plate 42 extends into the inner cavity of the test piece storage barrel 2, and the bottom end of the second barrel body 22 is mounted on a bottom plate 23.
In the above examples 1 and 2, the specimen storage tube 2, the horizontal tube 31, the vertical tube 32, the liquid trap 11, the first liquid transport tube 12, and the second liquid transport tube 14 are all made of organic glass.
After the devices of the above embodiments 1 and 2 are built, the corresponding pipe joints are required to be coated with sealant for sealing treatment.
Taking the device of example 2 as an example, when the test object is a pervious concrete sample 5 comprising a pervious layer, the operation process is as follows: before the test, after smearing the sealant on the side surface of the pervious concrete test piece 5, wrapping the pervious concrete test piece with a rubber sheet layer by layer, smearing the sealant on the outer surface of the rubber sheet, then putting the pervious concrete test piece 5 into the test piece storage barrel 2, slightly rotating the pervious concrete test piece 5 and pushing the pervious concrete test piece 5 to a proper height, so that the pervious concrete test piece 5 is in full contact with the inner wall of the test piece storage barrel 2 to prevent side leakage, fixing the pervious concrete test piece 5 in the test piece storage barrel 2 after the sealant is solidified, and obtaining an effect diagram after the fixing as shown in fig. 2. During testing, the regulating valve 17 is closed, a proper amount of solution containing heavy metal ions is added into the liquid collecting container 11, the water pump 15 is opened, the solution enters the test piece storage cylinder 2 through the second liquid conveying pipe 14 and flows through the pervious concrete test piece 5 from top to bottom, the heavy metal ions are absorbed by the pervious concrete test piece 5, and the solution with the reduced content of the heavy metal ions falls into the bottom of the test piece storage cylinder 2 and flows into the liquid collecting container 11 through the first liquid conveying pipe 12. The first infusion tube 12, the water pump 15, the second infusion tube 14 and the test piece storage barrel 2 form a water circulation system, the amount of heavy metal ions absorbed by the pervious concrete test piece 5 is gradually increased along with the water circulation, the heavy metal ion concentration is detected and recorded by a heavy metal ion concentration detector by collecting corresponding amounts of solution in the liquid collection container 11 at different moments, and when the concentration of a certain heavy metal ion is the same at two consecutive moments, the adsorption capacity of the pervious concrete test piece 5 on the heavy metal ion is saturated.
When the device test object of embodiment 2 is the pervious concrete test piece 5 that contains two-layer pervious bed, its operation is roughly the same with the operation of test pervious concrete test piece 5 that contains one deck pervious bed, and the difference is, before the test, two-layer pervious bed should be put into test piece storage cylinder 2 successively to make the bottom surface of one deck pervious bed above be located the up end of the horizontal pipe 31 in the middle, the bottom surface of one deck pervious bed below is located the up end of the horizontal pipe 31 that is in the bottom, the effect picture is seen in fig. 3 after pervious concrete test piece 5 is fixed. At different times, the solutions are collected from the respective vertical tubes 32.
The apparatus of embodiment 3 is characterized in that when the test object is a pervious concrete test piece 5 having two pervious layers, the operation process is substantially the same as the operation process for testing the pervious concrete test piece 5 having one pervious layer, and the difference is that before the test, the three pervious layers are sequentially placed in the test piece storage barrel 2, and the bottom surface of the topmost pervious layer is located above the upper end surface of the topmost horizontal tube 31, the bottom surface of the middle pervious layer is located above the upper end surface of the middle horizontal tube 31, the bottom surface of the bottommost pervious layer is located above the upper end surface of the bottommost horizontal tube 31, and the effect diagram of the pervious concrete test piece 5 after being fixed is shown in fig. 4. At different times, the solutions are collected from the respective vertical tubes 32.
Claims (6)
1. A device for testing heavy metal adsorption capacity of a pervious concrete pavement structure is characterized by comprising a pervious circulation device, a test piece storage cylinder and a plurality of test solution collecting units, wherein the upper part of the test piece storage cylinder is provided with an opening and is vertically arranged, the test solution collecting units are arranged on the side wall of the test piece storage cylinder at intervals from top to bottom, each test solution collecting unit comprises a horizontal pipe and a vertical pipe which are communicated, one end of the horizontal pipe is connected to the side wall of the test piece storage cylinder and is communicated with the inner cavity of the test piece storage cylinder, the other end of the horizontal pipe is connected with the bottom end of the vertical pipe, the upper part of the vertical pipe is provided with an opening, the pervious circulation device comprises a liquid collecting container with an opening at the upper part, the bottom of the test piece storage cylinder is connected with a first liquid conveying pipe, and a regulating valve is arranged on the first liquid conveying pipe, the outlet of the first infusion tube is located right above the liquid collecting container, the bottom of the liquid collecting container is connected with a second infusion tube, a water pump is mounted on the second infusion tube, and the outlet of the second infusion tube is located right above the test piece storage barrel.
2. The device for testing the heavy metal adsorption capacity of the pervious concrete pavement structure according to claim 1, further comprising an adjusting unit for adjusting the height of the test piece storage cylinder, wherein the adjusting unit comprises a plurality of adjusting bolts, a first mounting plate and a second mounting plate which are arranged up and down, the first mounting plate and the second mounting plate are connected through the plurality of adjusting bolts, a silica gel gasket is arranged between the first mounting plate and the second mounting plate, a first round hole is formed in the first mounting plate, a second round hole is formed in the second mounting plate, the diameter of the first round hole is matched with the outer diameter of the test piece storage cylinder, the diameter of the second round hole is smaller than the inner diameter of the test piece storage cylinder, the test piece storage cylinder comprises a first cylinder body and a second cylinder body which are arranged up and down and are communicated, first barrel, second mounting panel and second barrel superpose from top to bottom in proper order, the bottom of first barrel install first round hole in, the inner of second mounting panel stretch into the inner chamber of test piece storage cylinder in, the bottom of second barrel install on a bottom plate.
3. The device for testing the heavy metal adsorption capacity of the pervious concrete pavement structure according to claim 1, wherein a first sprinkler is installed at an outlet of the first liquid conveying pipe, and a second sprinkler is installed at an outlet of the second liquid conveying pipe.
4. The device for testing the heavy metal adsorption capacity of the pervious concrete pavement structure according to claim 1, wherein the test piece storage cylinder, the horizontal pipe, the vertical pipe, the liquid collection container, the first liquid conveying pipe and the second liquid conveying pipe are all made of organic glass products.
5. The device for testing the heavy metal adsorption capacity of the pervious concrete pavement structure according to claim 1, wherein the horizontal pipe and the vertical pipe are connected through a right-angle elbow.
6. The device for testing the heavy metal adsorption capacity of the pervious concrete pavement structure according to claim 1, wherein the number of the test solution collecting units is 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921673779.8U CN211505531U (en) | 2019-10-09 | 2019-10-09 | Device for testing heavy metal adsorption capacity of pervious concrete pavement structure |
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| CN201921673779.8U CN211505531U (en) | 2019-10-09 | 2019-10-09 | Device for testing heavy metal adsorption capacity of pervious concrete pavement structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112299759A (en) * | 2020-09-17 | 2021-02-02 | 浙江波威新材料科技有限公司 | High-adsorption Pb2+The composite concrete and the detection of Pb in the concrete2+Concentration device and detection method |
| CN113686751A (en) * | 2021-08-24 | 2021-11-23 | 华南农业大学 | Method for testing permeability coefficient of pervious concrete |
| CN117538237A (en) * | 2024-01-10 | 2024-02-09 | 中建三局集团有限公司 | Water seepage and adsorption test system for recycled concrete test piece |
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2019
- 2019-10-09 CN CN201921673779.8U patent/CN211505531U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112299759A (en) * | 2020-09-17 | 2021-02-02 | 浙江波威新材料科技有限公司 | High-adsorption Pb2+The composite concrete and the detection of Pb in the concrete2+Concentration device and detection method |
| CN113686751A (en) * | 2021-08-24 | 2021-11-23 | 华南农业大学 | Method for testing permeability coefficient of pervious concrete |
| CN117538237A (en) * | 2024-01-10 | 2024-02-09 | 中建三局集团有限公司 | Water seepage and adsorption test system for recycled concrete test piece |
| CN117538237B (en) * | 2024-01-10 | 2024-03-29 | 中建三局集团有限公司 | Water seepage and adsorption test system for recycled concrete test piece |
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