CN112014270A - Device and method for testing leaching resistance of heavy metal ions in pervious concrete - Google Patents
Device and method for testing leaching resistance of heavy metal ions in pervious concrete Download PDFInfo
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- CN112014270A CN112014270A CN202010943483.4A CN202010943483A CN112014270A CN 112014270 A CN112014270 A CN 112014270A CN 202010943483 A CN202010943483 A CN 202010943483A CN 112014270 A CN112014270 A CN 112014270A
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- pervious concrete
- metal ions
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- 238000012360 testing method Methods 0.000 title claims abstract description 89
- 239000011380 pervious concrete Substances 0.000 title claims abstract description 49
- 150000002500 ions Chemical class 0.000 title claims abstract description 47
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 42
- 238000002386 leaching Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 112
- 239000004567 concrete Substances 0.000 claims abstract description 17
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 238000010998 test method Methods 0.000 claims description 7
- 229910052785 arsenic Inorganic materials 0.000 claims description 5
- -1 arsenic ions Chemical class 0.000 claims description 5
- 229910001430 chromium ion Inorganic materials 0.000 claims description 5
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000035699 permeability Effects 0.000 claims description 5
- 238000002798 spectrophotometry method Methods 0.000 claims description 5
- 239000012466 permeate Substances 0.000 claims description 4
- 210000000416 exudates and transudate Anatomy 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims 1
- 238000002474 experimental method Methods 0.000 abstract description 14
- 238000004090 dissolution Methods 0.000 abstract description 3
- 230000003204 osmotic effect Effects 0.000 abstract description 3
- 238000011978 dissolution method Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000007922 dissolution test Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005096 rolling process 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
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Dispersion Chemistry (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a testing device and a method for the anti-leaching capacity of heavy metal ions in pervious concrete, and the testing device comprises a testing device and a concrete test block to be detected, wherein the testing device consists of an upper water tank and a lower water tank, the upper water tank is positioned above the lower water tank, the bottom of the upper water tank is provided with an opening, a placing groove matched with the shape of the test block is arranged at the opening, the upper water tank is provided with a water inlet pipe and a water outlet pipe which are communicated with the interior of the lower water tank, and the water inlet pipe is provided with a water pump. Compared with the prior art, the invention is innovated on the basis of a circulating flow dissolution experiment method and an osmotic dissolution method, better simulates the situation of an actual field, ensures that the experiment method and the experiment data are better and reliable, and fills the blank of the method for testing the leaching resistance of heavy metal ions in the pervious concrete.
Description
Technical Field
The invention relates to a test for the leaching resistance of heavy metal ions in pervious concrete, in particular to a test device and a test method for the leaching resistance of heavy metal ions in pervious concrete.
Background
The test method for testing the leaching resistance of heavy metal ions in common concrete comprises the following steps of 1, a dipping and dissolving method; 2. a vibration extraction experimental method; 3. rolling and pulling out the experimental method; 4. an osmotic dissolution method; 5. a circulating flow dissolution test method, and the like. The pervious concrete test blocks with different mix proportions or the same mix proportion have different or slightly different water permeability coefficients due to the fact that no standard and uniform flow exists in the manufacturing process. Because the method can not simulate the actual field condition, the experimental method and the experimental data have poor reliability. The method for testing the leaching resistance of heavy metal ions in pervious concrete is still blank at present.
Disclosure of Invention
The invention aims to provide a device and a method for testing the leaching resistance of heavy metal ions in water concrete, which solve the problems.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a testing arrangement of heavy metal ion anti leaching ability in pervious concrete, includes testing arrangement and the concrete test block that awaits measuring, testing arrangement comprises upper portion basin, lower part basin, the upper portion basin is located lower part basin top, the bottom trompil of upper portion basin, trompil department be equipped with test block shape assorted standing groove, be equipped with on the basin of upper portion with inside inlet tube and the outlet pipe that communicates of lower part basin, be equipped with the water pump on the inlet tube.
Preferably, a timing switch controller is arranged on the water pump.
Preferably, the water inlet position of the water inlet pipe in the upper water tank is higher than the water outlet position of the water outlet pipe in the upper water tank.
Preferably, the height of the placing groove is smaller than the thickness of the test block, and the test block and the periphery of the placing groove are wound, fixed and sealed through adhesive tapes.
Preferably, a funnel for receiving the penetrating fluid is arranged below the placing groove, and the lower part of the funnel is communicated with the inside of the lower water tank.
Preferably, the upper tank and the funnel are fixed to the lower tank or the ground through a bracket.
A test method for the leaching resistance of heavy metal ions in pervious concrete adopts the test device to test, the test method comprises the following steps,
step one, adopting a testing device to sample the pervious concrete exudate under the condition of a constant water head.
Step two, filling 20kg of deionized water into a water tank, and then starting a water pump to set time TfSeepage test of (1), TfThe value of (D) is calculated by the formula C-1:
wherein, TfThe running time of the permeable concrete seepage sampling device is hours; hyThe annual precipitation is mm/year in the area using the pervious concrete; t islThe service time of the pervious concrete is year; hsThe height of the pervious concrete sample is mm; hrThe thickness of the permeable concrete pavement slab is mm; pfThe water permeability coefficient of the pervious concrete is mm/s.
Step three, after the seepage of the pervious concrete by the deionized water is completed, extracting 200ml of seepage liquid from the water tank, and carrying out heavy metal ion content test by using a spectrophotometry, wherein the types of the heavy metal ions to be tested are as follows: arsenic ions, hexavalent chromium ions, lead ions.
Step four, calculating the content of the heavy metal ions, mg/L, obtained by testing by using a formula C-2 to obtain a correction coefficient CcAnd (3) correcting:
wherein, CcThe correction coefficient is the content of heavy metal ions in the leaching solution; ssThe cross-sectional area of the pervious concrete sample, mm.
Preferably, the test device requires rinsing with deionized water prior to testing.
Compared with the prior art, the invention has the advantages that:
1. the experimental method is innovated on the basis of a circulating flow dissolution experimental method and an osmotic dissolution experimental method, so that the situation of an actual field can be better simulated, and the experimental method and experimental data are better and more reliable.
2. The pervious concrete test blocks with different mix proportions or the same mix proportion have different or slightly different water permeability coefficients due to the fact that no standard or uniform flow exists in the manufacturing process.
3. The method is better, reasonable, convenient and simple, and the experimental data is better and more reliable.
4. The concrete test block that permeates water carries out the sample of the concrete test block exudate that permeates water and uses spectrophotometry to carry out heavy metal ion content test under the circumstances of invariable flood peak, and the heavy metal ion kind that needs the test is: arsenic ions, hexavalent chromium ions and lead ions, and the method fills the blank of the method for testing the leaching resistance of the heavy metal ions in the pervious concrete test block.
Drawings
FIG. 1 is a schematic structural diagram of a testing apparatus according to the present invention.
In the figure: 1. a lower water tank; 2. an upper water tank; 3. a water inlet pipe; 4. a water outlet pipe; 5. a placement groove; 6. testing blocks; 7. a funnel; 8. and (4) a water pump.
Detailed Description
The present invention will be further explained below.
Example (b): referring to fig. 1, the testing device for testing the leaching resistance of heavy metal ions in pervious concrete comprises a testing device and a concrete test block 6 to be tested, wherein the testing device is composed of an upper water tank 2 and a lower water tank 1, the upper water tank 2 is positioned above the lower water tank 1, the bottom of the upper water tank 2 is provided with a hole, a placing groove 5 matched with the test block 6 in shape is arranged at the hole, the upper water tank 2 is provided with a water inlet pipe 3 and a water outlet pipe 4 communicated with the interior of the lower water tank 1, and the water inlet pipe 3 is provided with a water pump 8.
The testing device for the anti-leaching capability of the heavy metal ions in the pervious concrete fills the blank of testing the anti-leaching capability of the heavy metal ions in the pervious concrete. Compared with simple test block soaking, the device has the advantages that the device can utilize the structural characteristics of pervious concrete to continuously circulate deionized water and penetrate through the whole pervious concrete test block 6. The experimental test time is short, so that the principle is better, reasonable, convenient and simple, and the experimental data is better and reliable. Simple test block soaking cannot better simulate the actual situation on site, the experimental period is long, and the experimental data is unreliable. The device for testing the leaching resistance of the heavy metal ions in the pervious concrete can better simulate the actual field condition, so that the experimental method and experimental data are better and reliable.
And a timing switch controller is arranged on the water pump 8, time is set before the experiment, then the water pump 8 is started, and the water pump 8 stops when the time is up, so that the experiment is finished.
The water inlet pipe 3 is higher than the water outlet pipe 4 at the water outlet position of the upper water tank 2 at the water inlet position of the upper water tank 2, a certain water head difference is formed, the water is discharged while the water is fed, so that the constant water head difference is maintained, and under the condition that the water pressure is constant, sufficient water quantity and water pass through the test block 6 at a constant speed are ensured.
The height of the placing groove 5 is smaller than the thickness of the test block 6, and the peripheries of the test block 6 and the placing groove 5 are wound, fixed and sealed through adhesive tapes. The test block 6 is fixed to prevent water from flowing out from the gap or around the test piece. The concrete highway section that permeates water is simulated to reality, and the rainwater flows in from the top and flows out from the bottom. After the seepage of the pervious concrete by the deionized water is completed, extracting 200ml of percolate from the water tank, and carrying out heavy metal ion content test by using a spectrophotometry, wherein the types of the heavy metal ions to be tested are as follows: arsenic ions, hexavalent chromium ions, lead ions.
A funnel 7 connected with penetrating fluid is arranged below the placing groove 5, and the lower part of the funnel 7 is communicated with the inside of the lower water tank 1. The funnel 7 plays the seepage liquid of passing through pervious concrete above collecting, prevents that the seepage liquid from splashing and leading to the loss.
The upper water tank 2 and the funnel 7 are fixed on the lower water tank 1 or the ground through a bracket in a conventional fixing mode, and the fixing and the limiting are realized.
A test method for the leaching resistance of heavy metal ions in pervious concrete adopts the test device to test, the test method comprises the following steps,
step one, adopting a testing device shown in figure 1 to sample permeable concrete leachate under the condition of a constant water head.
Step two, filling 20kg of deionized water into a water tank, and then starting a water pump to set time TfSeepage test of (1), TfThe value of (D) is calculated by the formula C-1:
wherein, TfThe running time of the permeable concrete seepage sampling device is hours; hyThe annual precipitation is mm/year in the area using the pervious concrete; t islThe service time of the pervious concrete is year; hsThe height of the pervious concrete sample is mm; hrThe thickness of the permeable concrete pavement slab is mm; pfThe water permeability coefficient of the pervious concrete is mm/s.
Step three, after the seepage of the pervious concrete by the deionized water is completed, extracting 200ml of seepage liquid from the water tank, and carrying out heavy metal ion content test by using a spectrophotometry, wherein the types of the heavy metal ions to be tested are as follows: arsenic ions, hexavalent chromium ions, lead ions.
Step four, calculating the content of the heavy metal ions, mg/L, obtained by testing by using a formula C-2 to obtain a correction coefficient CcAnd (3) correcting:
wherein, CcThe correction coefficient is the content of heavy metal ions in the leaching solution; ssThe cross-sectional area of the pervious concrete sample, mm.
Note that: in order to avoid external influences and influences of previous experiments, the testing device needs to be washed by deionized water before testing.
The specific mode is as follows: before each test, the apparatus was rinsed clean with deionized water and cycled for 5 minutes.
The device and the method for testing the leaching resistance of heavy metal ions in pervious concrete provided by the invention are described in detail, specific examples are applied in the description to explain the principle and the implementation mode of the invention, and the description of the examples is only used for helping to understand the method and the core idea of the invention; while the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a testing arrangement of anti leaching ability of heavy metal ion in concrete permeates water, includes testing arrangement and the concrete test block that awaits measuring, its characterized in that: the test device is composed of an upper water tank and a lower water tank, the upper water tank is located above the lower water tank, the bottom of the upper water tank is provided with a hole, a placing groove matched with the shape of the test block is arranged at the hole, the upper water tank is provided with a water inlet pipe and a water outlet pipe which are communicated with the interior of the lower water tank, and the water inlet pipe is provided with a water pump.
2. The testing device for the anti-leaching capability of the heavy metal ions in the pervious concrete according to claim 1, characterized in that: and a timing switch controller is arranged on the water pump.
3. The testing device for the anti-leaching capability of the heavy metal ions in the pervious concrete according to claim 1, characterized in that: the water inlet position of the water inlet pipe in the upper water tank is higher than the water outlet position of the water outlet pipe in the upper water tank.
4. The testing device for the anti-leaching capability of the heavy metal ions in the pervious concrete according to claim 1, characterized in that: the standing groove height is less than the thickness of test block, and the test block is fixed and sealed with the standing groove all around through the sticky tape winding.
5. The testing device for the anti-leaching capability of the heavy metal ions in the pervious concrete according to claim 1, characterized in that: a funnel connected with penetrating fluid is arranged below the placing groove, and the lower part of the funnel is communicated with the inside of the lower water tank.
6. The testing device for the anti-leaching capability of the heavy metal ions in the pervious concrete according to claim 5, wherein: the upper water tank and the funnel are fixed on the lower water tank or the ground through a bracket.
7. The method for testing the leaching resistance of the heavy metal ions in the pervious concrete according to claim 1, which is performed by adopting the testing device, and is characterized in that: the test method was as follows,
step one, adopting a testing device to sample the pervious concrete exudate under the condition of a constant water head.
Step two, filling 20kg of deionized water into a water tank, and then starting a water pump to set time TfSeepage test of (1), TfThe value of (D) is calculated by the formula C-1:
wherein, TfThe running time of the permeable concrete seepage sampling device is hours; hyThe annual precipitation is mm/year in the area using the pervious concrete; t islThe service time of the pervious concrete is year; hsThe height of the pervious concrete sample is mm; hrThe thickness of the permeable concrete pavement slab is mm; pfThe water permeability coefficient of the pervious concrete is mm/s.
Step three, after the seepage of the pervious concrete by the deionized water is completed, extracting 200ml of seepage liquid from the water tank, and carrying out heavy metal ion content test by using a spectrophotometry, wherein the types of the heavy metal ions to be tested are as follows: arsenic ions, hexavalent chromium ions, lead ions.
Step four, calculating the content of the heavy metal ions, mg/L, obtained by testing by using a formula C-2 to obtain a correction coefficient CcAnd (3) correcting:
wherein, CcThe correction coefficient is the content of heavy metal ions in the leaching solution; ssThe cross-sectional area mm of the pervious concrete sample.
8. The method for testing the leaching resistance of the heavy metal ions in the pervious concrete according to claim 7, wherein the method comprises the following steps: the test device needs to be rinsed with deionized water prior to testing.
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| CN202010943483.4A CN112014270A (en) | 2020-09-09 | 2020-09-09 | Device and method for testing leaching resistance of heavy metal ions in pervious concrete |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100832579B1 (en) * | 2007-02-22 | 2008-05-27 | 주식회사 포스코건설 | Method for preventing heavy metal from leaching in mortar, concrete and soil material in site using bottom ash as aggregate sand |
| KR101453312B1 (en) * | 2014-03-14 | 2014-10-22 | 한국건설기술연구원 | Permeability Test Method and Apparatus for Self Healing Concrete |
| CN105334309A (en) * | 2015-10-27 | 2016-02-17 | 中国科学院武汉岩土力学研究所 | Soil heavy metal migration and transformation simulating device |
| CN105738269A (en) * | 2016-05-10 | 2016-07-06 | 核工业湖州工程勘察院 | Device for measuring permeability coefficient of concrete |
| CN207232159U (en) * | 2017-06-08 | 2018-04-13 | 太原师范学院 | A kind of controllable temperature circulation Leaching Experiments simulator of spoil |
| CN208060347U (en) * | 2018-05-09 | 2018-11-06 | 湖北理工学院 | A kind of permeation coefficient of permeable concrete measurement device |
| CN109596554A (en) * | 2019-01-24 | 2019-04-09 | 武汉理工大学 | A kind of detection device and its application method of pervious concrete water purification characteristic |
| CN209148690U (en) * | 2018-10-18 | 2019-07-23 | 广西交通科学研究院有限公司 | A kind of long-term leaching test device for simulating waste residue concrete under sea conditions |
| CN110702583A (en) * | 2019-10-23 | 2020-01-17 | 中南大学 | Soil body infiltration dispersion leaching test integrated column |
| CN110850058A (en) * | 2019-11-18 | 2020-02-28 | 长安大学 | Leaching test device and using method thereof |
| CN110887951A (en) * | 2019-11-11 | 2020-03-17 | 安徽金联地矿科技有限公司 | Soil heavy metal migration experiment simulation device |
-
2020
- 2020-09-09 CN CN202010943483.4A patent/CN112014270A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100832579B1 (en) * | 2007-02-22 | 2008-05-27 | 주식회사 포스코건설 | Method for preventing heavy metal from leaching in mortar, concrete and soil material in site using bottom ash as aggregate sand |
| KR101453312B1 (en) * | 2014-03-14 | 2014-10-22 | 한국건설기술연구원 | Permeability Test Method and Apparatus for Self Healing Concrete |
| CN105334309A (en) * | 2015-10-27 | 2016-02-17 | 中国科学院武汉岩土力学研究所 | Soil heavy metal migration and transformation simulating device |
| CN105738269A (en) * | 2016-05-10 | 2016-07-06 | 核工业湖州工程勘察院 | Device for measuring permeability coefficient of concrete |
| CN207232159U (en) * | 2017-06-08 | 2018-04-13 | 太原师范学院 | A kind of controllable temperature circulation Leaching Experiments simulator of spoil |
| CN208060347U (en) * | 2018-05-09 | 2018-11-06 | 湖北理工学院 | A kind of permeation coefficient of permeable concrete measurement device |
| CN209148690U (en) * | 2018-10-18 | 2019-07-23 | 广西交通科学研究院有限公司 | A kind of long-term leaching test device for simulating waste residue concrete under sea conditions |
| CN109596554A (en) * | 2019-01-24 | 2019-04-09 | 武汉理工大学 | A kind of detection device and its application method of pervious concrete water purification characteristic |
| CN110702583A (en) * | 2019-10-23 | 2020-01-17 | 中南大学 | Soil body infiltration dispersion leaching test integrated column |
| CN110887951A (en) * | 2019-11-11 | 2020-03-17 | 安徽金联地矿科技有限公司 | Soil heavy metal migration experiment simulation device |
| CN110850058A (en) * | 2019-11-18 | 2020-02-28 | 长安大学 | Leaching test device and using method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 吴文伶;宋中南;石云兴;罗兰;王珂;戢文占;张涛;冯建华;李艳稳;: "透水混凝土路面/人工湿地雨水收集处理***的设计", 中国给水排水, no. 18, 17 September 2011 (2011-09-17), pages 46 - 50 * |
| 管宗甫;何军志;: "混凝土固化废弃物中有害金属离子浸出研究", 安阳师范学院学报, no. 02, 15 April 2007 (2007-04-15), pages 74 - 77 * |
| 管宗甫;何军志;: "混凝土固化废弃物中有害金属离子浸出研究", 安阳师范学院学报, no. 02, pages 74 - 77 * |
| 韩建国;阎培渝;: "基于ASTM C1202规范的混凝土抗氯离子渗透性测定仪的研制及应用", 铁道科学与工程学报, no. 04, 30 August 2006 (2006-08-30), pages 18 - 22 * |
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