CN107741395A - Simulate the experimental provision and method of non-flowing full sewage conduct concrete erosion - Google Patents
Simulate the experimental provision and method of non-flowing full sewage conduct concrete erosion Download PDFInfo
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Abstract
The invention provides a kind of experimental provision and method for simulating non-flowing full sewage conduct concrete erosion, it is related to concrete erosion experimental provision technical field.The hydrogen sulfide generator and sewage reserve tank being connected including experimental box, with the experimental box, the suction pump for conveying sewage into the experimental box is provided between the experimental box and the sewage reserve tank, the experimental box includes casing and the first fixture, the second fixture and the 3rd fixture that are arranged in the casing, and the height of first fixture, second fixture and the 3rd fixture reduces successively.The present invention is by different height that concrete sample is fixed in casing, to realize the accelerated corrosion analog study of sewage conduct different parts concrete under the conditions of varying environment；It is simple to operate, it is easy to use, using good with promotion prospect.
Description
Technical field
The invention belongs to concrete erosion experimental provision technical field, is to be related to a kind of non-flowing full of simulation more specifically
The experimental provision and method of sewage conduct concrete erosion.
Background technology
With China's economic society fast development and Development of China's Urbanization continuous acceleration, sanitary sewage discharge capacity by
Year increase.It is mostly reinforced concrete structure for conveying the pipeline of sewage in urban environment engineering, because being in buried envelope
Close or semiclosed form, and for a long time by soda acid, air, wash away, a variety of corrosivenesses such as microorganism, easily cause structural damage.
City all over the world faces the problem of descending sewage network aging and deterioration in large quantities, pipeline inside coagulation at present
Native surface is stained, top layer is loose, mortar comes off, aggregate exposure, cracking and steel bar corrosion is produced when serious, this not only influences city
Allomeric function, and also result in serious economic loss.Due under municipal sewage environment concrete material durability influence because
The complexity and corrosion factor of element alternate effect, and its corrosion mechanism is considerably complicated, and different parts mix in sewage pipe
Solidifying soil is also not quite similar because of its different corrosion mechanism of local environment.Therefore, the durable Journal of Sex Research of concrete under Sewage Environment is carried out
It is extremely urgent, but corrosion of the sewage to concrete is a very long process, the deterioration in cycle of being entirely on active service for simulation concrete
Process, shorten test period, the test method often corroded using speeding-up simulation.
Corrosion mechanism based on sewage to concrete, current accelerated corrosion research method mainly have chemical attack, micro- life
Thing corrodes and enhanced sewage corrosion, but does not consider the environmental condition of actual sewage pipeline.Sewage conduct mainly has pressure pipe (full
Stream) and two kinds of gravity pipe (non-flowing full), the anaerobic environment being full of all the time in sewage for the former concrete duct, corrosion is relatively
It is lighter；And for widely used the latter, because internal environment influence factor is numerous so that it is more crisscross multiple that it corrodes mechanism
It is miscellaneous, it is necessary to which that Divisional is studied.
Existing sewage conduct analogue means focuses on the in good time discharge of the uninterrupted supplement for realizing fresh sewage and sewage,
So as to simulate the change of gas and water quality in sewage conduct under different water depth state, concrete sample is not laid wherein
Carry out long-term corrosion monitoring.The domestic corrosion research on concrete under Sewage Environment is mostly that concrete sample is immersed in into dirt
Tested in water, this method be unable to the top (gas phase) of the non-flowing full sewage conduct of comprehensive simulation, water level region (gas-liquid interface) with
And the corrosion of bottom (liquid phase) concrete.
The content of the invention
It is an object of the invention to provide a kind of experimental provision and method for simulating non-flowing full sewage conduct concrete erosion,
It is rotten to solve to be unable to top, water level region and the lower concrete of the non-flowing full sewage conduct of comprehensive simulation present in prior art
The technical problem of erosion.
To achieve the above object, the technical solution adopted by the present invention is：A kind of non-flowing full sewage conduct coagulation of simulation is provided
The experimental provision of soil corrosion, including experimental box, the hydrogen sulfide generator and sewage reserve tank that are connected with the experimental box, institute
State the suction pump being provided between experimental box and the sewage reserve tank for conveying sewage into the experimental box, the experiment
Case includes casing and the first fixture, the second fixture and the 3rd fixture that are arranged in the casing, first fixture, described the
The height of two fixtures and the 3rd fixture reduces successively.
Further, the heater for control cabinet body temperature is provided with the casing, for wet in control cabinet body
The spray thrower of degree and the probe for humiture in monitoring case body.
Further, the hydrogen sulfide generator includes being used to hold the first beaker of dilute hydrochloric acid solution, for holding sulphur
The conical flask changed the second beaker of sodium solution and be connected respectively with first beaker and second beaker, described first burns
Cup is connected by the first peristaltic pump with the conical flask, and second beaker is connected by the second peristaltic pump with the conical flask
Logical, the conical flask is connected by aspiration pump with the casing.
Further, be provided with the casing for by the hydrogen sulfide gas being passed through, heating after hot-air and spray
The fan that the water smoke gone out dispels.
Further, the gas detecting instrument for sulfureted hydrogen gas concentration in mensure case body is provided with the casing.
Further, the branch for fixing the heater, the spray thrower and the probe is provided with the casing
Frame.
Further, the sewage reserve tank, the suction pump are connected with the casing by corrosion-resistant pipe.
Further, the valve for controlling effluent flow rate is provided between the suction pump and the casing.
Further, the material of the casing is transparent organic glass.
The experimental provision beneficial effect of the non-flowing full sewage conduct concrete erosion of simulation provided by the invention is：With it is existing
Technology is compared, and the present invention is reasonable in design, by the way that hydrogen sulfide generator and sewage reserve tank are connected with casing respectively, and with the
The different height that concrete sample is fixed in casing by one fixture, the second fixture and the 3rd fixture respectively, to simulate dirt simultaneously
The corrosion at waterpipe top, water level region and lower concrete, so as to realize, sewage conduct different parts mix under the conditions of varying environment
Coagulate the accelerated corrosion analog study of soil；It is simple to operate, it is easy to use, using good with promotion prospect.
The present invention also provides a kind of experimental method for simulating non-flowing full sewage conduct concrete erosion, comprises the following steps：
The concrete of different intensity grades is prepared according to design requirement, is fabricated to length of side 40mm cube body concrete examination
Part, be placed in after form removal 20 ± 2 DEG C of temperature, relative humidity more than or equal to 95% environment in, standard curing 28 days, then start into
Row accelerated corrosion tests, the concrete sample only stay one side to be corroded, and remaining five face carries out paraffin encapsulation process；
Concrete sample described in three groups is put respectively using first fixture, second fixture and the 3rd fixture
In the corrosion in the casing, simulating non-flowing full sewage conduct top, water level region and lower concrete, first fixture is pressed from both sides
The corrosion for the concrete sample held sets and is higher than sewage upper surface down, by the described mixed of second fixture clamping
Coagulate the erosional surface of native test specimen and the direction of drainage flow is oppositely arranged, by the concrete sample of the 3rd fixture clamping
Corrosion sets and submerged by sewage up；
Periodically the concrete sample that first fixture clamps is removed and is put into sewage and soaks a period of time；
The enhanced sewage for the various concentrations manually prepared is added in the sewage reserve tank；
The concentration and temperature, relative humidity and sulfureted hydrogen gas concentration in flow velocity and casing for controlling sewage form difference
Corrosion working conditions；
Periodically concrete sample described in three groups is taken out out of described casing, and carries out surface p H, corrosion depth, matter respectively
Amount loss and the test analysis of compression strength, the deterioration process progress contrastive detection of concrete under different sewage environment is ground
Study carefully.
The experimental method beneficial effect of the non-flowing full sewage conduct concrete erosion of simulation provided by the invention is：With it is existing
Technology is compared, and the present invention replaces the concrete of inside sewage pipeline by concrete batching test specimen, and uses and try concrete
The method that part soaks in sewage overhung, gas-liquid interface placement and sewage respectively is come while simulated at the top of sewage conduct, water
Position area and the corrosion of lower concrete；By observing the numerical value of probe and gas detecting instrument, it is easy to carry out environment to experimentation
Condition determines；According to the concentration of sewage in the concentration, humiture and liquid phase of measurement result manual adjustment hydrogen sulfide in gas phase and
Flow velocity, the accelerated corrosion analog study of sewage conduct different parts concrete under the conditions of varying environment is realized, substantially reduces reality
Test the cycle.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is that the structure of the experimental provision of the non-flowing full sewage conduct concrete erosion of simulation provided in an embodiment of the present invention is shown
It is intended to；
Fig. 2 is the internal structure schematic diagram of experimental box in Fig. 1；
Fig. 3 is the structural representation of hydrogen sulfide generator in Fig. 1.
Wherein, each reference in figure：
1- sewage reserve tanks；2- hydrogen sulfide generators；The beakers of 21- first；The beakers of 22- second；23- conical flasks；3- draws water
Pump；4- casings；5- concrete samples；The fixtures of 6- first；The fixtures of 7- second；The fixtures of 8- the 3rd；9- heaters；10- spray throwers；
11- pops one's head in；12- power supplys；The peristaltic pumps of 13- first；The peristaltic pumps of 14- second；15- aspiration pumps；16- conduits；17- gas detecting instruments；
18- fans；19- supports；20- corrosion-resistant pipes；24- valves；25- heating rods；26- flowmeters；27- paraffin；28- turned welt plugs；29-
Soft stopple.
Embodiment
In order that technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Drawings and Examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.Term " installation ", " connected ", " connection " are answered
It is interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
It is to be appreciated that term " height ", " on ", " under ", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " etc.
The orientation or position relationship of instruction are based on orientation shown in the drawings or position relationship, are for only for ease of the description present invention and letter
Change description, rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and
Operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.
Also referring to Fig. 1 and Fig. 2, now to the experiment of the non-flowing full sewage conduct concrete erosion of simulation provided by the invention
Device illustrates.The experimental provision of the non-flowing full sewage conduct concrete erosion of simulation, including experimental box and the experiment
The hydrogen sulfide generator 2 and sewage reserve tank 1 that case is connected, are provided between the experimental box and the sewage reserve tank 1
For conveying the suction pump 3 of sewage into the experimental box, the experimental box includes casing 4 and is arranged in the casing 4
First fixture 6, the second fixture 7 and the 3rd fixture 8, the height of first fixture 6, second fixture 7 and the 3rd fixture 8
Degree reduces successively.
The experimental provision of the non-flowing full sewage conduct concrete erosion of simulation provided by the invention, compared with prior art, its
It is reasonable in design, it is simple to operate, hydrogen sulfide generator and sewage reserve tank are connected with casing respectively, for simulating varying environment
Under the conditions of sewage conduct；Concrete sample is fixed in casing respectively using the first fixture, the second fixture and the 3rd fixture
Different height, to simulate simultaneously at the top of sewage conduct, the corrosion of water level region and lower concrete, so as to realize sewage conduct not
With the accelerated corrosion analog study of position concrete, it is suitable for the application of and promotes.
Need exist for further illustrating, the casing 4 is the cuboid containment housing assembled by poly (methyl methacrylate) plate；For
The corrosion of more preferable simulation inside sewage pipeline concrete, the concrete sample 5 only stay one side to be corroded, remaining five face
Carry out the encapsulation process of paraffin 27；First fixture 6, second fixture 7 and the 3rd fixture 8 are in the prior art can
Enough stainless steel fixtures for realizing the effect that grips.First fixture 6 is fixed on the top of the casing 4, second folder
Tool 7 and the 3rd fixture 8 are each attached to the bottom of the casing 4；The height of second fixture 7 is higher than the 3rd fixture
8 height, and the bottom of the concrete sample 5 of first fixture 6 fixation is higher than sewage upper surface；Second folder
The top for the concrete sample 5 that tool 7 is fixed is less than sewage upper surface, i.e., described concrete higher than sewage upper surface and bottom
The half of the non-wax front cover of test specimen 5 is submerged in sewage, second half is exposed in atmosphere；The coagulation that 3rd fixture 8 is fixed
The top of native test specimen 5 is less than sewage upper surface, is respectively used to simulate top, water level region and the bottom coagulation of non-flowing full sewage conduct
The corrosion condition of soil.
Further, also referring to Fig. 1 and Fig. 2, as the non-flowing full sewage conduct concrete of simulation provided by the invention
A kind of embodiment of the experimental provision of corrosion, the heater for control cabinet body temperature is provided with the casing 4
9th, the probe 11 for the spray thrower 10 of humidity in control cabinet body and for humiture in monitoring case body.Preferably, the probe
11 are circumscribed with display；The heater 9, the spray thrower 10 and the probe 11 are respectively in the prior art being capable of control cabinet
Body temperature, humidity and the equipment for humiture in monitoring case body；And its external connection is connected to outside case by perforate
On power supply 12, it is easy in case outer control.
Further, referring to Fig. 3, as the experiment provided by the invention for simulating non-flowing full sewage conduct concrete erosion
A kind of embodiment of device, the hydrogen sulfide generator 2 include being used for the first beaker 21, the use for holding dilute hydrochloric acid solution
In the second beaker 22 for holding sodium sulfide solution and the cone being connected respectively with first beaker 21 and second beaker 22
Shape bottle 23, first beaker 21 are connected by the first peristaltic pump 13 with the conical flask 23, and second beaker 22 passes through
Second peristaltic pump 14 is connected with the conical flask 23, and the conical flask 23 is connected by aspiration pump 15 with the casing 4.Tool
Body, above-mentioned component is connected by conduit 16；Dilute salt that first peristaltic pump 13 will be held in first beaker 21
The sodium sulfide solution held in second beaker 22 is respectively delivered to the conical flask by acid solution, second peristaltic pump 14
In 23, hydrogen sulfide gas is obtained after hybrid reaction, the conical flask 23 is clogged by soft stopple 29, makees sealing protection；The taper
Stink damp in bottle 23 is known from experience to be extracted into the casing 4 by the aspiration pump 15, reaches setting through the detection of gas detecting instrument 17
Concentration range, that is, stop extract.
Further, also referring to Fig. 1 and Fig. 2, as the non-flowing full sewage conduct concrete of simulation provided by the invention
A kind of embodiment of the experimental provision of corrosion, it is provided with the casing 4 for by the hydrogen sulfide gas being passed through, heating
The fan 18 that hot-air and the water smoke of ejection afterwards dispels.Preferably, the quantity of the fan 18 is two, is respectively arranged at
The both sides inwall of the casing 4.
Further, also referring to Fig. 1 and Fig. 2, as the non-flowing full sewage conduct concrete of simulation provided by the invention
A kind of embodiment of the experimental provision of corrosion, it is provided with the casing 4 dense for hydrogen sulfide gas in mensure case body
The gas detecting instrument 17 of degree.Preferably, the gas detecting instrument 17 is connected by turned welt plug 28 with the casing 4, for sulphur
Change the detection and discharge of hydrogen.
Further, also referring to Fig. 1 and Fig. 2, as the non-flowing full sewage conduct concrete of simulation provided by the invention
A kind of embodiment of the experimental provision of corrosion, it is provided with the casing 4 for fixing the heater 9, the spray
Drench the support 19 of device 10 and the probe 11.Preferably, the support 19 is stainless steel stent, by more stainless steel tube welding
Into.
Further, referring to Fig. 1, as the experiment provided by the invention for simulating non-flowing full sewage conduct concrete erosion
A kind of embodiment of device, the sewage reserve tank 1, the suction pump 3 and the casing 4 pass through the phase of corrosion-resistant pipe 20
Connection, form a flow circuit.
Further, referring to Fig. 1, as the experiment provided by the invention for simulating non-flowing full sewage conduct concrete erosion
A kind of embodiment of device, the valve for controlling effluent flow rate is provided between the suction pump 3 and the casing 4
24.Preferably, the flowmeter 26 for detecting effluent flow rate is provided between the suction pump 3 and the casing 4.
Further, also referring to Fig. 1 and Fig. 2, as the non-flowing full sewage conduct concrete of simulation provided by the invention
A kind of embodiment of the experimental provision of corrosion, the material of the casing 4 is transparent organic glass.Convenient observation is described mixed
Coagulate the erosion profile and sewage fluidised form of native test specimen 5.
Also referring to Fig. 1 to Fig. 3, the present invention also provides a kind of experiment for simulating non-flowing full sewage conduct concrete erosion
Method, comprise the following steps：
The concrete of different intensity grades is prepared according to design requirement, is fabricated to length of side 40mm cube concrete sample
5, be placed in after form removal 20 ± 2 DEG C of temperature, relative humidity more than or equal to 95% environment in, standard curing 28 days, then start into
Row accelerated corrosion tests, the concrete sample 5 only stay one side to be corroded, and remaining five face carries out the encapsulation process of paraffin 27；
Concrete described in three groups is tried respectively using first fixture 6, second fixture 7 and the 3rd fixture 8
Part 5 is placed in the casing 4, the corrosion of non-flowing full sewage conduct top, water level region and lower concrete is simulated, by described first
The corrosion for the concrete sample 5 that fixture 6 clamps is set and is higher than sewage upper surface down, and second fixture 7 is pressed from both sides
The erosional surface of the concrete sample 5 and the direction of drainage flow held are oppositely arranged, the 3rd fixture 8 is clamped described in
The corrosion of concrete sample 5 sets and submerged by sewage up；
Periodically the concrete sample 5 that first fixture 6 clamps is removed and is put into sewage and soaks a period of time,
To simulate the flowing full running situation of true sewage conduct not timing；
The enhanced sewage for the various concentrations manually prepared is added in the sewage reserve tank 1；
The concentration and temperature, relative humidity and sulfureted hydrogen gas concentration in flow velocity and casing for controlling sewage form difference
Corrosion working conditions；Specifically, by adding the enhanced sewage of various concentrations, to control the concentration of sewage in the casing 4
With accelerated corrosion；The flow velocity of sewage is controlled by controlling the unlatching size of the valve 24；By observing 11 Hes of the probe
The numerical value of the gas detecting instrument 17, to control opening for the heater 9, the spray thrower 10 and the hydrogen sulfide generator 2
Close, and different corrosive environment bars is set according to the concentration of the temperature in the casing 4, relative humidity and hydrogen sulfide gas
Part；
Periodically concrete sample 5 described in three groups is taken out out of described casing 4, and carry out respectively surface p H, corrosion depth,
Mass loss and the test analysis of compression strength, the deterioration process progress contrastive detection of concrete under different sewage environment is ground
Study carefully.
The experimental method of the non-flowing full sewage conduct concrete erosion of simulation provided by the invention, compared with prior art, root
Concrete sample is prepared according to concrete drain tile product requirement, by concrete sample respectively in sewage overhung, gas-liquid interface
Place and soaked in sewage, for simulating sewage conduct top, water level region and the corrosion of lower concrete；Observation probe and gas
The numerical value of detector, environmental condition measure can easily be carried out to experimentation；According to vulcanizing in measurement result regulating box
The concentration and flow velocity of the concentration of hydrogen, humiture and sewage, so as to realize the accelerated corrosion mould of varying environment Under Concrete
Intend, shorten experimental period.
Specifically, the strength grade of the concrete sample 5 is C30, it is provided with the casing 4 for controlling sewage temperature
The heating rod 25 of degree；The enhanced sewage is to prepare nutrient solution by adding a certain proportion of various nutriments in clear water,
Then train the method for taming and dociling using inoculation microorganism is cultivated and tamed.Seed sludge is derived from what the western sewage plant two of Shijiazhuang City bridge was sunk
Sludge-tank, the enhanced sewage of different COD (COD) concentration can be made as needed.To maintain the steady of concentration of wastewater
It is fixed, it need to periodically add nutriment.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. the experimental provision of the non-flowing full sewage conduct concrete erosion of simulation, it is characterised in that：Including experimental box and the experiment
The hydrogen sulfide generator and sewage reserve tank that case is connected, are provided between the experimental box and the sewage reserve tank and are used for
The suction pump of sewage, the first folder that the experimental box includes casing and is arranged in the casing are conveyed into the experimental box
Tool, the second fixture and the 3rd fixture, the height of first fixture, second fixture and the 3rd fixture reduce successively.
2. the experimental provision of non-flowing full sewage conduct concrete erosion is simulated as claimed in claim 1, it is characterised in that：It is described
The heater for control cabinet body temperature, the spray thrower for humidity in control cabinet body are provided with casing and for monitoring case
The probe of internal humiture.
3. the experimental provision of non-flowing full sewage conduct concrete erosion is simulated as claimed in claim 2, it is characterised in that：It is described
Hydrogen sulfide generator includes being used to hold the first beaker of dilute hydrochloric acid solution, the second beaker for holding sodium sulfide solution and divided
The conical flask not being connected with first beaker and second beaker, first beaker by the first peristaltic pump with it is described
Conical flask is connected, and second beaker is connected by the second peristaltic pump with the conical flask, and the conical flask passes through pumping
Pump is connected with the casing.
4. the experimental provision of non-flowing full sewage conduct concrete erosion is simulated as claimed in claim 3, it is characterised in that：It is described
The fan for the hot-air after the hydrogen sulfide gas being passed through, heating and the water smoke of ejection to be dispelled is provided with casing.
5. the experimental provision of non-flowing full sewage conduct concrete erosion is simulated as claimed in claim 4, it is characterised in that：It is described
The gas detecting instrument for sulfureted hydrogen gas concentration in mensure case body is provided with casing.
6. the experimental provision of non-flowing full sewage conduct concrete erosion is simulated as claimed in claim 5, it is characterised in that：It is described
The support for fixing the heater, the spray thrower and the probe is provided with casing.
7. the experimental provision of non-flowing full sewage conduct concrete erosion is simulated as claimed in claim 6, it is characterised in that：It is described
Sewage reserve tank, the suction pump are connected with the casing by corrosion-resistant pipe.
8. the experimental provision of non-flowing full sewage conduct concrete erosion is simulated as claimed in claim 7, it is characterised in that：It is described
The valve for controlling effluent flow rate is provided between suction pump and the casing.
9. the experimental provision of non-flowing full sewage conduct concrete erosion is simulated as claimed in claim 8, it is characterised in that：It is described
The material of casing is transparent organic glass.
10. using experimental provision as claimed in claim 9 simulate the experimental method of non-flowing full sewage conduct concrete erosion,
It is characterised in that it includes following steps：
The concrete of different intensity grades is prepared according to design requirement, length of side 40mm cube concrete sample is fabricated to, tears open
It is placed in after mould in the environment of 20 ± 2 DEG C of temperature, relative humidity more than or equal to 95%, standard curing 28 days, then proceeds by and add
Fast corrosion experiment, the concrete sample only stay one side to be corroded, and remaining five face carries out paraffin encapsulation process；
Concrete sample described in three groups is placed in by institute using first fixture, second fixture and the 3rd fixture respectively
State in casing, simulate the corrosion of non-flowing full sewage conduct top, water level region and lower concrete, by first fixture clamping
The corrosion of the concrete sample sets and is higher than sewage upper surface down, the concrete that second fixture is clamped
The erosional surface of test specimen and the direction of drainage flow are oppositely arranged, by the corrosion of the concrete sample of the 3rd fixture clamping
Set and submerged by sewage up；
Periodically the concrete sample that first fixture clamps is removed and is put into sewage and soaks a period of time；
The enhanced sewage for the various concentrations manually prepared is added in the sewage reserve tank；
The concentration and temperature, relative humidity and sulfureted hydrogen gas concentration in flow velocity and casing for controlling sewage form different corruption
Lose environmental condition；
Periodically concrete sample described in three groups is taken out out of described casing, and carries out surface p H, corrosion depth, quality damage respectively
Mistake and the test analysis of compression strength, contrastive detection research is carried out to the deterioration process of concrete under different sewage environment.
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| CN108398373A (en) * | 2018-04-27 | 2018-08-14 | 石家庄铁道大学 | A kind of detection method of microbiologic(al) corrosion normal concrete |
| CN110470592A (en) * | 2019-09-12 | 2019-11-19 | 河海大学 | It is a kind of for simulating the microbiologic(al) corrosion device of concrete for hydraulic structure under different condition |
| CN112161914A (en) * | 2020-09-22 | 2021-01-01 | 上海市建筑科学研究院有限公司 | Adaptability evaluation method for urban sewage environment anticorrosive coating system |
| CN112858153A (en) * | 2021-01-18 | 2021-05-28 | 上海市建筑科学研究院有限公司 | Corrosion test method for concrete and surface anticorrosive paint thereof |
| CN114164095A (en) * | 2021-11-29 | 2022-03-11 | 河海大学 | Concrete sewage pipeline microbial corrosion simulation device and method |
| US11408816B2 (en) * | 2019-03-28 | 2022-08-09 | Qingdao university of technology | Device and method for dry-wet cycle simulation test of concrete in tidal zone and splash zone |
| CN117606908A (en) * | 2023-12-08 | 2024-02-27 | 中山大学 | Concrete test device and method based on load-corrosion coupling effect |
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| CN112858153A (en) * | 2021-01-18 | 2021-05-28 | 上海市建筑科学研究院有限公司 | Corrosion test method for concrete and surface anticorrosive paint thereof |
| CN114164095A (en) * | 2021-11-29 | 2022-03-11 | 河海大学 | Concrete sewage pipeline microbial corrosion simulation device and method |
| CN117606908A (en) * | 2023-12-08 | 2024-02-27 | 中山大学 | Concrete test device and method based on load-corrosion coupling effect |
| CN117606908B (en) * | 2023-12-08 | 2024-05-07 | 中山大学 | Concrete test device and method based on load-corrosion coupling effect |
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