CN115032373A - Testing device and testing method for repairing effect of underwater microorganism self-healing concrete crack - Google Patents
Testing device and testing method for repairing effect of underwater microorganism self-healing concrete crack Download PDFInfo
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- CN115032373A CN115032373A CN202210612212.XA CN202210612212A CN115032373A CN 115032373 A CN115032373 A CN 115032373A CN 202210612212 A CN202210612212 A CN 202210612212A CN 115032373 A CN115032373 A CN 115032373A
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- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 244000005700 microbiome Species 0.000 title claims abstract description 35
- 230000000694 effects Effects 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 152
- 238000006243 chemical reaction Methods 0.000 claims abstract description 93
- 241000237983 Trochidae Species 0.000 claims abstract description 16
- 239000013535 sea water Substances 0.000 claims description 14
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 230000035876 healing Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 8
- 238000002474 experimental method Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 239000008239 natural water Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 230000008439 repair process Effects 0.000 description 8
- 230000000813 microbial effect Effects 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000243 solution Substances 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
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a testing device and a testing method for a repairing effect of a self-healing concrete crack by microorganisms in water, wherein the testing device comprises an upper dynamic water reaction bin and a lower dynamic water reaction bin which are arranged from top to bottom, a detachable upper bracket is arranged between the upper dynamic water reaction bin and the lower dynamic water reaction bin, the upper bracket is of a net structure, a top shell of the net structure is arranged at the top of the upper dynamic water reaction bin, a fan is fixed on one side of the top shell, which faces the upper dynamic water reaction bin, and the fan is connected with a wind speed regulator; the inside wall of lower floor moves water reaction chamber is provided with rivers derailleur, temperature control regulator and outlet valve, the bottom that moves water reaction chamber in lower floor is equipped with the lower part bracket. The invention can simulate different flowing water environments in a laboratory, and provides a convenient and quick experimental device for researchers far away from water sources.
Description
Technical Field
The invention belongs to the technical field of microbial concrete crack repair, and particularly relates to a testing device and a testing method for a repairing effect of an underwater microbial self-healing concrete crack.
Background
The concrete is easy to generate cracks in the service process, and great threats are formed to the service life and the structural safety of the concrete. The traditional passive repair mode causes new environmental pollution in the repair process or has the problem that organic components are difficult to be compatible with concrete components, and the microbial induced calcium carbonate precipitation technology is adopted, so that the concrete crack can achieve the self-healing effect, the repair can be continued for a long time, the pollution is little, and the compatibility degree of the concrete is high.
In recent years, researchers are fiercely researching on microorganism self-healing concrete, but research on microorganism self-healing crack effect is mostly concentrated in a still water environment, and obviously influences of different factors (such as flow velocity, water temperature, wind speed and the like) in relevant dynamic water environments such as marine microorganism self-healing concrete and hydraulic microorganism self-healing concrete on microorganism self-healing concrete crack repair in actual engineering are neglected. Up to now, in the related field of microbial concrete self-repairing, there is no experimental device and experimental method for testing the repairing effect of the microbial self-healing concrete crack in the flowing water environment.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a device for testing the effect of self-healing of the concrete cracks by microorganisms in water, and the device and the method are used for solving the problem that an experimental device and a method for testing the effect of self-healing of the concrete cracks by microorganisms in a flowing water environment are lacked in the prior art.
In order to realize the purpose, the invention adopts the following technical scheme:
the invention provides a device for testing the repairing effect of a self-healing concrete crack by microorganisms in water, which comprises an upper dynamic water reaction bin and a lower dynamic water reaction bin which are arranged from top to bottom, wherein a detachable upper bracket is arranged between the upper dynamic water reaction bin and the lower dynamic water reaction bin, the upper bracket is of a net structure, a top shell of the net structure is arranged at the top of the upper dynamic water reaction bin, a fan is fixed on one side of the top shell, which faces the upper dynamic water reaction bin, and the fan is connected with a wind speed regulator; the inside wall of lower floor moves water reaction chamber is provided with rivers derailleur, temperature-sensing control ware and outlet valve, the bottom that moves water reaction chamber in lower floor is equipped with the lower part bracket.
According to a preferable technical scheme, an opening and closing groove is formed in the top of the upper layer flowing water reaction bin, and the top shell is installed in the opening and closing groove in a buckling mode.
According to a preferable technical scheme, a partition plate fixing device is arranged at the joint of the upper layer flowing water reaction bin and the lower layer flowing water reaction bin, and the upper bracket is installed on the partition plate fixing device.
As an optimized technical scheme, the upper layer flowing water reaction bin and the lower layer flowing water reaction bin are both of cuboid structures.
As a preferable technical scheme, the upper bracket and the lower bracket are respectively divided into concrete placing areas, and the concrete placing areas are arranged in parallel at certain intervals.
As a preferable technical scheme, the angle of the fan can be adjusted, and the adjusting range is 360 degrees.
The second aspect of the invention provides a method for testing the repairing effect of the underwater microorganism self-healing concrete crack, which adopts the device for testing the repairing effect of the underwater microorganism self-healing concrete crack, and comprises the following steps:
placing concrete samples on a placing area on a lower bracket in sequence, placing an upper bracket between an upper layer flowing water reaction bin and a lower layer flowing water reaction bin, and placing the concrete samples on the placing area of the upper bracket in sequence;
injecting corresponding aqueous solution into the upper layer flowing water reaction bin and the lower layer flowing water reaction bin according to the flowing water environment simulated as required, and stopping injecting when the aqueous solution reaches half of the height of the concrete sample in the upper layer flowing water reaction bin;
opening a fan of the upper flowing water reaction bin to simulate natural wind force applied to the concrete exposed outside the water body in the natural water body environment;
opening a water flow speed changer and a temperature control regulator to enable the flow speed and the temperature of water in the dynamic water reaction cabin to reach values required by experiments;
step five, after reaching the corresponding experimental age, opening a water outlet valve, draining water, taking out a concrete sample, and testing the healing effect of the crack, the durability and the mechanical property;
and step six, repeating the step one to the step five to finish the test of all the concrete samples.
Preferably, in the second step, the aqueous solution is seawater or river water.
And as a preferable technical scheme, when the injected aqueous solution is seawater, opening a water outlet valve every other day, emptying the seawater in the upper layer flowing water reaction cabin, continuously injecting the seawater after one day until the liquid level reaches half of the height of the concrete sample in the upper layer flowing water reaction cabin, stopping injecting, and circulating to the end of the corresponding test age.
Compared with the prior art, the invention has the following technical effects:
(1) the invention provides a special device for personnel needing to research the microorganism self-healing concrete crack in the flowing water environment, can further simulate the environments in different water bodies such as rivers, oceans and the like by controlling the speed of water flow, the real-time temperature and the wind speeds in different directions, solves the device problem of the microorganism self-healing concrete crack researchers in the flowing water environment, and fills the blank of the microorganism self-healing concrete experimental device in the flowing water environment.
(2) According to the invention, the upper layer and the lower layer of the water-moving reaction bin are arranged, the lower layer can simulate the part completely immersed below the water body, the upper layer can simulate the part at the gas-liquid interface, and the part exposed outside the water body can be used for simulating natural phenomena such as tide and wet-dry circulation of seawater, so that the self-repairing conditions of cracks at different parts in the water body can be tested at the same time, and the two purposes are achieved.
(3) The invention can simulate different flowing water environments in a laboratory, and provides a convenient and quick experimental device for researchers far away from water sources.
Drawings
In order to more clearly illustrate the embodiments of the present 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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of a test apparatus of the present invention.
FIG. 2 is a side view of the test apparatus of the present invention.
FIG. 3 is a top view of the upper flowing water reaction chamber in the testing device of the present invention.
FIG. 4 is a top view of the lower flowing water reaction chamber in the testing device of the present invention.
Wherein the reference numerals are specified as follows: the device comprises an upper layer flowing water reaction bin 1, a top shell 2, a fan 3, a wind speed regulator 4, an upper bracket 5, a partition plate fixer 6, a lower layer flowing water reaction bin 7, a water flow speed changer 8, a temperature control regulator 9, a lower bracket 10, a water outlet valve 11, a concrete sample 12 and an open-close groove 13.
Detailed Description
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1-4, this embodiment provides an aquatic microorganism self-healing concrete crack repair effect testing arrangement, including the upper strata that from top to bottom sets up and move water reaction storehouse 1 and lower floor and move water reaction storehouse 7, upper strata move water reaction storehouse 1 with be provided with detachable upper portion bracket 5 between lower floor moves water reaction storehouse 7, upper portion bracket 5 is network structure, upper strata move water reaction storehouse 1 with the junction of lower floor moves water reaction storehouse 7 is provided with baffle fixer 6, upper portion bracket 5 install in on the baffle fixer 6, upper portion bracket 5 keeps apart into the test storehouse of two mutual independence nevertheless intercommunications with upper strata move water reaction storehouse 1 and lower floor move water reaction storehouse 7. The upper bracket 5 and the lower bracket 10 are respectively divided into concrete placing areas, and the concrete placing areas are arranged in parallel at intervals according to a certain distance. The inside wall of lower floor's flowing water reaction storehouse 7 is provided with rivers derailleur 8, temperature control regulator 9 and outlet valve 11, the bottom of lower floor's flowing water reaction storehouse 7 is equipped with lower part bracket 10. The upper layer moving water reaction bin 1 and the lower layer moving water reaction bin 7 are both of cuboid structures.
The top of the upper moving water reaction bin 1 is provided with a top shell 2 with a net structure, the top of the upper moving water reaction bin 1 is provided with an opening and closing groove 13, and the top shell 2 is mounted in the opening and closing groove 13 in a buckling mode. A fan 3 is fixed on one side of the top shell 2 facing the upper layer flowing water reaction bin 1, and the fan 3 is connected with a wind speed regulator 4; the fans 3 are all arranged above the concrete placing area, and the wind speed can be adjusted, rotated and fixed at a certain angle for blowing.
The using process of the embodiment comprises the following steps:
firstly, sequentially placing concrete samples 12 in a placing area of a lower-layer flowing water reaction chamber 7, then stably placing an upper-layer bracket on four partition plate fixing devices 6, and sequentially placing the concrete samples 12 in a placing area of an upper-layer flowing water reaction chamber 1;
step two, checking whether the water outlet valve 11 is closed tightly, injecting corresponding aqueous solution according to the simulated flowing water environment after confirming that the water outlet valve is correct, and stopping injecting when the aqueous solution reaches half of the height of the concrete placed in the upper flowing water reaction bin 1;
thirdly, covering the top shell 2 tightly according to the occlusion groove, and opening a fan 3 of the upper layer flowing water reaction bin 1 to simulate natural wind force of concrete exposed outside the water body in a natural water body environment;
opening a water flow speed regulator 8 and a temperature controller to enable the flow speed and the temperature of the water reaction cabin to reach values required by the experiment;
and step five, opening the water outlet valve 11 after reaching the corresponding experimental age, opening the water-moving reaction bin after draining the water, taking out the concrete sample 12, and testing the healing effect of the crack, the durability, the mechanical property and the like.
And step six, remaining the concrete test blocks, and repeating the steps to continue the experiment.
Specifically speaking, this device is used for testing the aquatic microorganism self-healing concrete crack repair effect that moves. The upper layer flowing water reaction generation bin and the lower layer flowing water reaction bin 7 are generation containers for testing the reaction of the self-healing concrete crack repair effect of microorganisms in the flowing water in the experimental device, and are cuboid bin bodies additionally provided with top shells 2. The fan 3 is used for simulating wind power of concrete exposed outside a water body at a gas-liquid interface in a natural environment; the flow speed changer 8 is used for simulating the flow speed of the water body in different flowing water environments. The temperature control regulator 9 is used for simulating the water body temperature at different time and in different seasons.
Example 1
The embodiment is used for simulating the repairing effect of microorganism self-healing concrete cracks in a seawater environment, and comprises the following specific steps:
microorganism self-healing concrete samples 12 which are cured for 28 days are sequentially placed in the placement area of the lower-layer flowing water reaction bin 7, and the sizes of the samples are 40mm multiplied by 160 mm. The upper bracket is stably placed on four partition plate fixers 6, and then microorganism self-healing concrete samples 12 which are maintained for 28 days are sequentially placed in the placing area of the upper flowing water reaction chamber 1. After confirming that the water outlet valve 11 is closed, the seawater is slowly injected until the liquid level reaches half of the height of the concrete placed in the upper flowing water reaction bin 1. The top shell 2 is tightly covered, the fan 3 is opened, the wind speed is adjusted to the first gear, and 360-degree rotation is carried out. And opening the water flow speed changer 8 and the temperature control regulator 9 to enable the flow speed and the temperature of the water reaction cabin to reach the values required by the experiment. The water outlet valve 11 is opened every other day, the seawater in the upper layer flowing water reaction chamber 1 is emptied, the seawater is continuously injected in the next day until the liquid level reaches half of the height of the concrete placed in the upper layer flowing water reaction chamber 1, and the part is used for simulating the tide phenomenon of the seawater. After the test is repeated in this way, the water outlet valve 11 is opened after the specified experimental age is reached, the reaction bin is opened after the water is drained, the concrete sample 12 of the part to be tested is taken out, and the healing effect of the crack, the durability, the mechanical property and the like are tested.
Example 2
The method is used for testing the microorganism self-healing concrete crack repairing effect in the river environment, and comprises the following specific steps:
microorganism self-healing concrete samples 12 which are cured for 28 days are sequentially placed in the placing area of the lower moving water reaction cabin 7, and the sizes are 40mm multiplied by 160 mm. The upper bracket is stably placed on four partition plate fixers 6, and then microorganism self-healing concrete samples 12 which are maintained for 28 days are sequentially placed in the placing area of the upper flowing water reaction chamber 1. After confirming that the water outlet valve 11 is closed, the river water is slowly injected until the liquid level reaches half of the height of the concrete placed in the upper flowing water reaction bin 1. And tightly covering the top shell 2, opening the fan 3, adjusting the wind speed to the second gear, and rotating for 360 degrees. And opening the water flow speed changer 8 and the temperature control regulator 9 to enable the flow speed and the temperature of the water reaction cabin to reach the values required by the experiment. And after the specified experimental age is reached, opening the water outlet valve 11, draining water, opening the reaction cabin, taking out the concrete sample 12 of the part to be tested, and testing the healing effect of the crack, the durability, the mechanical property and the like. Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.
Claims (9)
1. The device for testing the repairing effect of the underwater microorganism self-healing concrete crack is characterized by comprising an upper dynamic water reaction bin and a lower dynamic water reaction bin which are arranged from top to bottom, wherein a detachable upper bracket is arranged between the upper dynamic water reaction bin and the lower dynamic water reaction bin, the upper bracket is of a net structure, a top shell of the net structure is arranged at the top of the upper dynamic water reaction bin, a fan is fixed on one side, facing the upper dynamic water reaction bin, of the top shell, and the fan is connected with a wind speed regulator; the inside wall of lower floor moves water reaction chamber is provided with rivers derailleur, temperature control regulator and outlet valve, the bottom that moves water reaction chamber in lower floor is equipped with the lower part bracket.
2. The device for testing the repairing effect of the self-healing concrete crack by the microorganisms in the water according to claim 1, wherein an opening and closing groove is formed in the top of the upper flowing water reaction bin, and the top shell is installed in the opening and closing groove in a buckling manner.
3. The device for testing the self-healing concrete crack repairing effect of the microorganisms in the water as claimed in claim 1, wherein a partition plate fixer is arranged at the joint of the upper flowing water reaction chamber and the lower flowing water reaction chamber, and the upper bracket is mounted on the partition plate fixer.
4. The device for testing the underwater microorganism self-healing concrete crack healing effect according to claim 1, wherein the upper flowing water reaction bin and the lower flowing water reaction bin are both of a cuboid structure.
5. The device for testing the self-healing concrete crack healing effect of underwater microorganisms according to claim 1, wherein the upper bracket and the lower bracket are respectively divided into concrete placing areas, and the concrete placing areas are arranged in parallel at certain intervals.
6. The device for testing the self-healing concrete crack healing effect of microorganisms in water according to claim 1, wherein the fan is adjustable in angle within 360 degrees.
7. An underwater microorganism self-healing concrete crack repairing effect testing method, which adopts the underwater microorganism self-healing concrete crack repairing effect testing device as claimed in any one of claims 1 to 6, and is characterized by comprising the following steps:
placing concrete samples on a placing area on a lower bracket in sequence, placing an upper bracket between an upper layer flowing water reaction bin and a lower layer flowing water reaction bin, and placing the concrete samples on the placing area of the upper bracket in sequence;
injecting corresponding aqueous solution into the upper layer dynamic water reaction bin and the lower layer dynamic water reaction bin according to the dynamic water environment to be simulated, and stopping injecting when the aqueous solution reaches half of the height of the concrete sample in the upper layer dynamic water reaction bin;
opening a fan of the upper flowing water reaction bin to simulate natural wind force applied to the concrete exposed outside the water body in the natural water body environment;
opening a water flow speed changer and a temperature control regulator to enable the flow speed and the temperature of water in the water reaction cabin to reach values required by experiments;
step five, after reaching the corresponding experimental age, opening a water outlet valve, draining water, taking out a concrete sample, and testing the healing effect of the crack, the durability and the mechanical property;
and step six, repeating the step one to the step five to finish the test of all the concrete samples.
8. The method for testing the repairing effect of the self-healing concrete crack by the microorganisms in the water according to claim 7, wherein in the second step, the aqueous solution is seawater or river water.
9. The method for testing the repairing effect of the underwater microorganism self-healing concrete crack as claimed in claim 8, wherein when the injected aqueous solution is seawater, the water outlet valve is opened every other day to empty the seawater in the upper flowing water reaction cabin, the seawater is continuously injected after one day until the liquid level reaches half of the height of the concrete sample in the upper flowing water reaction cabin, and the injection is stopped and the cycle is completed until the corresponding test period.
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Cited By (1)
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