CN219777438U - Ocean simulation corrosion test device for reinforced concrete composite material - Google Patents
Ocean simulation corrosion test device for reinforced concrete composite material Download PDFInfo
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- CN219777438U CN219777438U CN202223449043.7U CN202223449043U CN219777438U CN 219777438 U CN219777438 U CN 219777438U CN 202223449043 U CN202223449043 U CN 202223449043U CN 219777438 U CN219777438 U CN 219777438U
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- 238000012360 testing method Methods 0.000 title claims abstract description 111
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 63
- 230000007797 corrosion Effects 0.000 title claims abstract description 40
- 238000005260 corrosion Methods 0.000 title claims abstract description 40
- 239000002131 composite material Substances 0.000 title claims abstract description 24
- 238000004088 simulation Methods 0.000 title claims abstract description 15
- 238000005507 spraying Methods 0.000 claims abstract description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims description 81
- 239000007921 spray Substances 0.000 claims description 53
- 239000012267 brine Substances 0.000 claims description 12
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 12
- 238000011049 filling Methods 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims 2
- 238000011010 flushing procedure Methods 0.000 abstract description 2
- 238000011068 loading method Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 29
- 239000002699 waste material Substances 0.000 description 15
- 239000013535 sea water Substances 0.000 description 10
- 239000004567 concrete Substances 0.000 description 9
- 238000007789 sealing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000003595 mist Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007847 structural defect Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 208000013201 Stress fracture Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
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- 239000004568 cement Substances 0.000 description 1
- 150000001804 chlorine Chemical class 0.000 description 1
- 239000003653 coastal water Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000028161 membrane depolarization Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Abstract
The utility model provides a marine simulation corrosion test device for reinforced concrete composite materials, which comprises two steel piles and a test box arranged at the upper parts of the two steel piles, wherein the test box is provided with a plurality of test chambers; the two steel piles are fixed on the ground through anchor bolts, and the steel piles penetrate through the test box upwards; the top of the steel pile is provided with circular arc-shaped guide sliding nests along the length direction of the steel pile, a hemispherical guide block is assembled in each guide sliding nest in a sliding mode, a rectangular groove for placing a reinforced concrete sample is formed above each hemispherical guide block, and two ends of the reinforced concrete sample are respectively placed in the rectangular grooves of the two hemispherical guide blocks; a sample feeding door is arranged on the side wall of the test box, and a water flushing port is arranged at the top of the test box; the test device further comprises a spraying mechanism, a surge simulating mechanism and a loading mechanism. The utility model has compact structure and reasonable design, can simulate the marine environment from multiple angles in an all-around way, and has strong practicability when used for testing the corrosion condition of the reinforced concrete sample.
Description
Technical Field
The utility model relates to the technical field of reinforced concrete performance detection, in particular to a marine simulation corrosion test device for a reinforced concrete composite material.
Background
Reinforced concrete composite materials, which generally refer to a composite material formed by adding a reinforcing mesh or a steel plate to concrete, compensate for concrete having relatively low tensile strength and ductility by reinforcing steel having high tensile strength or ductility, thereby improving mechanical properties of the concrete. The reinforced concrete composite material is a basic structural frame for constructing modern buildings, is one of the most common engineering materials, and is widely used as a foundation on ground buildings, and widely applied to wading buildings, particularly ocean infrastructure.
The concrete principle is that the hydraulic property of the hydrogel principle is utilized to fully react and fuse cement and aggregate, and a large number of structural defects such as gel holes, fine cracks, pores and the like exist in the forming process of the concrete. In the long-term existence, external corrosive media (including corrosive liquids and corrosive gases) can gradually permeate and diffuse to the surface of the steel bars inside the concrete through the structural defects, so that the steel bars are further corroded. Once the steel bar is corroded, loose ferric oxide is generated on the surface of the steel bar, the volume of the steel bar is multiplied, and thus, splittable tensile stress is generated around the reinforced concrete. When the tensile stress exceeds the tensile strength of the concrete, the concrete can generate cracks, and the cracks can further aggravate the corrosion of the steel bars and influence each other until the reinforced concrete composite material fails. Once the reinforced concrete composite material fails, the supporting force to facilities or buildings is lost, disaster accidents occur or the service life of the buildings is shortened, and the economic loss is huge. Particularly, for coastal or marine facilities and buildings, such as coastal water conservancy flood drainage facilities, marine structure buildings and the like, the corrosion condition of reinforced concrete composite materials is more serious, because chloride ions in coastal air and seawater are important factors for corrosion of concrete steel bars, passivation films on the surfaces of the steel bars can be damaged, and accelerated corrosion such as corrosion cells, chlorine salt depolarization harm and the like can be formed; if rapid deterioration collapse of the reinforced concrete composite material occurs, huge economic loss and casualties are caused, and national sea defense safety is even endangered.
Therefore, in order to prolong the service life of the reinforced concrete composite material and reduce the corrosion of the steel bars, the corrosion-resistant steel bars or coated steel bars are developed, and the bottleneck problem of the front common industry of steel production enterprises is solved. In order to test the corrosion resistance of reinforced concrete composite materials, developing a corrosion test device capable of fully simulating the marine environment is a primary problem to be solved at present.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model aims to provide a marine simulation corrosion test device for a reinforced concrete composite material.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the marine simulated corrosion test device for the reinforced concrete composite material comprises two steel piles and a test box arranged at the upper parts of the two steel piles; the two steel piles are fixed on the ground through anchor bolts, and the steel piles penetrate through the test box upwards; the top of the steel pile is provided with circular arc-shaped guide sliding nests along the length direction of the steel pile, a hemispherical guide block is assembled in each guide sliding nest in a sliding mode, a rectangular groove for placing a reinforced concrete sample is formed above each hemispherical guide block, and two ends of the reinforced concrete sample are respectively placed in the rectangular grooves of the two hemispherical guide blocks; a sample feeding door for taking and placing reinforced concrete samples is arranged on the side wall of the test box, and a water filling port is arranged at the top of the test box; the test device further comprises a spraying mechanism for simulating an ocean salt fog air environment, a simulated surging mechanism for simulating ocean current surging and a load mechanism for simulating a load.
The utility model further improves that: the spraying mechanism comprises a spraying table arranged in an upper mounting groove of the test box, a plurality of gas spray holes and a plurality of liquid discharge spray holes are formed in the front end face of the spraying table, the gas spray holes and the liquid spray holes are arranged in a staggered mode along the horizontal direction, and adjacent and close gas spray holes and liquid spray holes form a spraying unit; the gas spray holes are communicated with the compressed air pipeline, and the liquid spray holes are communicated with the brine pipeline.
The utility model further improves that: the spraying direction of the gas spray holes and the spraying direction of the liquid spray holes in the same spraying unit are acute angles which are convenient for gas-liquid collision.
The utility model further improves that: the compressed air pipeline and the brine pipeline which are positioned outside the spraying table are respectively provided with a pressure gauge and a secondary pressurizing pump, and the brine pipeline is also provided with a filter.
The utility model further improves that: the simulated surging mechanism comprises a water spraying table, a liquid return pipe and a liquid return pump; the water spraying table is closely attached to one side wall of the test box, a plurality of hemispherical spray heads are arranged on the front end face array of the water spraying table, the tail end of the water spraying table is communicated with a liquid return port arranged at the bottom of the side wall of the water spraying table through a liquid return pipe, and a liquid return pump for providing flowing power is arranged on the liquid return pipe.
The utility model further improves that: the load mechanism comprises an inverted triangle body top cone pressed on the surface of the reinforced concrete sample and a top cone rod connected with the inverted triangle body top cone, wherein the top cone rod penetrates through a top plate of the test box and then is connected with a load disc capable of accommodating a plurality of load blocks, and the load disc is horizontally arranged.
The utility model further improves that: the load mechanism further comprises a supporting frame arranged outside the test box, a guide sleeve is arranged at the position, corresponding to the tip cone rod, of the top plate of the supporting frame, and the tip cone rod is in sliding fit with the guide sleeve.
The utility model further improves that: the vertical corrosion thickness scale is arranged at the top edge of the supporting frame, and a pointer for reading the corrosion thickness scale is arranged on a tip cone rod between the test box and the supporting frame.
The utility model further improves that: still be provided with vertical water level scale in the test box, the bottom center of test box is linked together with the waste liquid bucket through waste liquid discharge pipe, is provided with the waste liquid valve that can open and shut on the waste liquid discharge pipe.
By adopting the technical scheme, the utility model has the following technical progress:
the utility model provides a marine simulation corrosion test device for reinforced concrete composite materials, which can comprehensively simulate a marine environment in a test box, and specifically comprises the steps of immersing a sample in high-salt seawater, simulating tidal surge to impact the sample, simulating the salt fog corrosion of the sea air to the surface of the sample, simulating bearing to load the sample, and enabling the corrosion condition of reinforced concrete as a reinforced concrete foundation immersed in the sea or exposed outside the ocean surface to be reproduced to the maximum extent, so that the corrosion condition, the service life, the strength and the like of the reinforced concrete can be intuitively and objectively detected, comprehensive and real corrosiveness data can be obtained, and effective data support is provided for developing corrosion-resistant steel bars for steel enterprises. The utility model has compact structure, reasonable design and strong practicability; the seawater after the test is used as waste liquid for collection and treatment, is not directly discharged, and is clean and environment-friendly.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic top view of the present utility model;
FIG. 3 is a schematic cross-sectional view of the structure of FIG. 1 in the direction A-A;
FIG. 4 is a schematic view of a discharge system of the plenum;
in the figure, 1, a steel pile, 2, a test box, 3, a hemispherical guide block, 4, a reinforced concrete sample, 6-1, a spray table, 6-2, a gas spray hole, 6-3, a liquid spray hole, 6-4, a gas cavity, 6-5, a liquid cavity, 6-6, a compressed air pipeline, 6-7, a brine pipeline, 6-8, a delivery pump, 6-9, a flow regulating valve, 6-10, a control valve, 6-11, a secondary pressurizing pump, 6-12, a pressure gauge, 6-13, a filter, 7-1, a water spray table, 7-2, a spray head, 7-3, a liquid return pipe, 7-4, a liquid return pump, 8-1, an inverted triangle tip cone, 8-2, a tip cone rod, 8-3, a load disc, 8-4, a support frame, 8-5, a guide sleeve, 8-6, a corrosion thickness scale, 8-7, a pointer, 8-8, a load block, 9, a water level scale, 10, a discharge pipe, 11, a waste liquid barrel, 12, a water gap, a water filling valve, 13, a water gap, and a bolt.
Detailed Description
The present utility model will be described in detail below with reference to the accompanying drawings.
A marine simulation corrosion test device for reinforced concrete composite materials is shown in fig. 1-3, and comprises a steel pile 1, a test box 2, a load mechanism, an air supply mechanism and a spraying mechanism. The number of the steel piles is two, the steel piles are anchored on the ground through foundation bolts 13, and the upper parts of the steel piles 1 penetrate through the test box 2 and are in sealing connection with the side wall of the test box 2. Circular arc-shaped guiding sliding pits are formed in the top of the steel pile 1 along the length direction of the steel pile 1, and a hemispherical guiding block 3 is arranged in each guiding sliding pit in a sliding fit mode. The bottom of the hemispherical guide block 3 is hemispherical matched with the guide sliding nest, a rectangular groove for placing the reinforced concrete sample 4 is formed in the upper portion of the hemispherical guide block 3, and two ends of the reinforced concrete sample 4 are placed in the rectangular grooves of the two hemispherical guide blocks 3 respectively, so that stable horizontal support is achieved. The side wall of the test box 2 is provided with a sample feeding door (not marked in the figure) for taking and placing the reinforced concrete sample 4, the top of the test box 2 is also provided with a water filling port 14 for filling seawater into the test box 2, and the water filling port 14 is provided with a sealing cover.
The test box 2 is internally provided with a spraying mechanism, an artificial surge mechanism and a load mechanism, wherein the spraying mechanism is used for simulating a salt fog environment in the ocean environment air, the artificial surge mechanism is used for simulating sea water fluctuation of the ocean, and the load mechanism is used for simulating bearing stress of a reinforced concrete foundation.
The spraying mechanism is arranged above the test box 2, as shown in fig. 4, the spraying mechanism comprises a spraying table 6-1 with a gas spraying hole 6-2 and a liquid spraying hole 6-3 arranged at the front end, a mounting groove matched with the spraying table 6-1 in shape is arranged at the upper part of the test box 2, and the spraying table 6-1 is fixed in the mounting groove through a nut, so that the front end of the spraying table is positioned in the test box 2, and the tail end of the spraying table is positioned outside the test box 2. The number of the spraying tables 6-1 can be one or more, and in this embodiment, the spraying tables 6-1 are two and are arranged side by side on the same side wall of the test chamber 2. The front end face of the spraying table 6-1 is provided with a plurality of gas spray holes 6-2 and a plurality of liquid discharge spray holes 6-3, the gas spray holes 6-2 and the liquid spray holes 6-3 are arranged in a staggered mode along the horizontal direction, and the adjacent and close gas spray holes 6-2 and the liquid spray holes 6-3 form a spraying unit. The spraying angle of the gas spraying holes 6-2 and the spraying angle of the liquid spraying holes 6-3 in the same spraying unit are acute angles, so that gas and liquid can fully strike to form aerosol.
Preferably, the included angle between the spraying direction of the gas spraying holes 6-2 and the spraying direction of the liquid spraying holes 6-3 in the same spraying unit is 30-50 degrees, so that the sprayed gas and liquid can be ensured to fully collide to form fine mist drops.
The gas nozzle 6-2 and the liquid nozzle 6-3 are preferably formed as tapered holes which gradually decrease in the ejection direction, and can pressurize the ejected gas/liquid; the end apertures of the gas spray holes 6-2 and the liquid spray holes 6-3 are adjusted according to the size of the test box, so that uniform fine mist can be sprayed.
The number of the gas spray holes 6-2 and the liquid spray holes 6-3 can be adjusted according to the size of the test device, in this embodiment, as shown in fig. 1 and 4, three gas spray holes 6-2 and three liquid spray holes 6-3 are arranged on each spray table 6-1, and two are combined to form three spray units. If the space of the test chamber 2 is large, a plurality of groups of spraying units can be arranged along the vertical direction so as to quickly and uniformly provide water mist or salt mist into the test chamber 2.
The spraying table 6-1 is provided with a plurality of gas cavities 6-4 and a plurality of liquid cavities 6-5, which are arranged in parallel, the number of the gas cavities 6-4 is the same as the number of the gas spray holes 6-2, and the number of the liquid cavities 6-5 is the same as the number of the liquid spray holes 6-3, i.e. in the embodiment, three gas cavities 6-4 and three liquid cavities 6-5 are arranged in total. The tail end of the gas cavity 6-4 is communicated with the compressed air pipeline 6-6, and the front end of the gas cavity is communicated with one gas spray hole 6-2, so that continuous conveying of a gas source is realized. The tail end of the liquid cavity 6-5 is communicated with a brine pipeline 6-7, and the front end of the liquid cavity is communicated with a liquid spray hole 6-3, so that continuous conveying of a water source is realized. The compressed air pipeline 6-6 and the brine pipeline 6-7 are respectively provided with a delivery pump 6-8, a flow regulating valve 6-9 and a control valve 6-10 so as to respectively regulate the air quantity and the brine quantity and ensure the impact atomization effect.
In order to further ensure the spraying effect, the compressed air pipeline 6-6 and the brine pipeline 6-7 which are positioned outside the spraying table 6-1 are respectively provided with a pressure gauge 6-12 and a secondary pressurizing pump 6-11 so as to ensure that the sprayed air water pressure is stable and the spraying effect is good. In actual use, if the compressed air pipeline 6-6 and the brine pipeline 6-7 are already branched outside the spraying table 6-1, the pressure gauge 6-12 and the secondary pressurizing pump 6-11 can be respectively installed on each branched pipeline so as to ensure that the spraying pressure of each spraying unit is consistent.
In order to ensure that the spraying mechanism continuously works, the brine pipeline 6-7 is also provided with a filter 6-13 for filtering large particles which are not completely dissolved in the brine or sundries in the water, so that the liquid spraying hole 6-3 is prevented from being blocked, and the spraying effect is prevented from being influenced.
As shown in FIG. 1, the surge simulating mechanism comprises a water spraying table 7-1, a liquid return pipe 7-3 and a liquid return pump 7-4; the water spraying table 7-1 is tightly attached to one side wall of the test box 2, the width of the water spraying table 7-1 is the same as that of the test box 2, and the height of the water spraying table 7-1 is not lower than that of the reinforced concrete sample. An inner cavity for water flow to pass through is formed in the water spraying table 7-1; the front end face of the water spraying table 7-1 is provided with a plurality of spray heads 7-2 communicated with the inner cavity of the water spraying table 7-1 in an array manner, the spray heads 7-2 are hemispherical, and a plurality of water spraying holes are circumferentially distributed on the spray heads 7-2; the tail end of the water spraying table 7-1 is connected with a liquid return pipe 7-3, the liquid return pipe 7-3 penetrates through the side wall of the test box 2 and is communicated with a liquid return port formed in the bottom of the side wall of the water spraying table 7-1, and the liquid return pipe 7-3 is provided with a liquid return pump 7-4 for providing flowing power and a closable pipe valve. Under the action of the liquid return pump 7-4, the seawater in the test box 2 flows out from the liquid return port and is sprayed out from the water spraying hole on the opposite side water spraying table 7-1; as the spray nozzle 7-2 is hemispherical, the spray angle of the spray hole is changeable, and water flows in different directions are staggered, so that the seawater in the test box 2 is driven to flow, and a surge similar to ocean tides is formed.
Preferably, the water spraying table 7-1 is internally and parallelly provided with a plurality of water distribution cavities, the water distribution cavities are horizontally arranged, the front end of each water distribution cavity is connected with a row of spray heads 7-2, the rear end of each water distribution cavity is connected with a liquid return branch pipe, the liquid return branch pipes are communicated to a liquid return main pipe, and the liquid return main pipe is connected with a liquid return port. And each liquid return branch pipe is provided with a branch pipe pump which can be independently controlled, the water flow pressure in the liquid return branch pipe can be controlled through the branch pipe pump, and the ocean surge condition can be simulated more accurately through the difference of the water flow speeds of the upper layer and the lower layer.
A vertical water level gauge 9 is further arranged in the test box 2 and used for observing the water level in the test box 2; the upper edge of the water level gauge 9 is not lower than the top height of the reinforced concrete sample 4. The center of the bottom of the test box 2 is communicated with a waste liquid barrel 11 through a waste liquid discharge pipe 10, and a waste liquid valve 12 which can be opened and closed is arranged on the waste liquid discharge pipe 10. The center of the bottom of the test box 2 is arranged in a gradually contracted bucket shape, so that waste liquid is discharged conveniently. After the test is finished, the waste liquid valve 12 is opened, the seawater in the test box 2 is put into the waste liquid barrel 11, and then the sample is observed and detected.
The load mechanism comprises a load disc 8-3, a tip cone rod 8-2 and an inverted triangle tip cone 8-1, wherein the bottom of the tip cone rod 8-2 is connected with the inverted triangle tip cone 8-1, the top of the tip cone rod is connected with the load disc 8-3, the tip cone rod 8-2 penetrates through the top plate of the test box 2 and then stretches into the test box 2, the inverted triangle tip cone 8-1 can compress a reinforced concrete sample 4, and a plurality of load blocks 8-8 can be placed on the load disc 8-3 according to test requirements, so that the downward pressure meets the test requirements of the reinforced concrete sample 4. The test box 2 is also provided with a supporting frame 8-4, and the supporting frame 8-4 is arranged around the test box 2 and fixedly connected with the steel pile 1. The top plate of the supporting frame 8-4 is positioned below the loading disc 8-3, a guide sleeve 8-5 is arranged at the position of the top plate of the supporting frame 8-4 corresponding to the top cone rod 8-2, and the top cone rod 8-2 moves up and down in the guide sleeve 8-5. The top edge of the supporting frame 8-4 is provided with a vertical corrosion thickness scale 8-6, and a pointer 8-7 pointing to the corrosion thickness scale 8-6 is arranged on a tip cone rod 8-2 positioned between the test box 2 and the supporting frame 8-4; during the test, the data of the corrosion thickness scale 8-6 can be read through the pointer 8-7, so that the influence and the change of the load during the test on the thickness direction of the reinforced concrete sample 4 can be recorded. When the reinforced concrete sample 4 is deformed by load, the middle part of the reinforced concrete sample 4 is sunk, and the hemispherical guide block 3 for supporting the reinforced concrete sample 4 rotates in the guide sliding nest by a certain angle so as to keep continuous and stable support on the reinforced concrete sample 4 and avoid stress fracture; the deformation of the reinforced concrete sample 4 can be read out by the corrosion thickness scale 8-6.
The length of the inverted triangle tip cone 8-1 is not smaller than the width of the reinforced concrete sample 4, so that the cone bottom of the inverted triangle tip cone 8-1 is uniformly pressed on the reinforced concrete sample 4.
The top cone rod 8-2 is provided with a plurality of pin holes along the height direction, and the top cone rod 8-2 can be fixed on the guide sleeve 8-5 through pins; when the test is finished, firstly removing the load blocks 8-8, then lifting the tip cone rod 8-2, enabling the inverted triangle tip cone 8-1 to leave the surface of the sample, inserting a pin into a proper pin hole above the guide sleeve 8-5, and hanging the inverted triangle tip cone 8-1 on the guide sleeve 8-5, so that a tester can conveniently take out the reinforced concrete sample 4 for further detection.
And a sample delivery channel is formed in the position, corresponding to the sample delivery door, of the support frame 8-4, so that the smooth sampling and sample delivery are facilitated. The cone tip of the inverted triangle tip cone 8-1 is a round angle tip.
Because the test box 2 is sealed, the real simulation of the marine environment can be realized, and the test detection accuracy is improved. Therefore, the connection ports of the test chamber 2 and each component are required to be sealed, for example, the edge of the sample feeding door, the connection part of the air supply pipe and the exhaust pipe with the test chamber 2, the connection part of the spraying table 6-1 with the test chamber 2, the connection part of the water spraying table 7-1 with the test chamber 2 and the connection part of the tip cone rod 8-2 with the test chamber 2 are all provided with sealing components, such as sealing strips, sealing rings and the like, so that the environment of the test chamber 2 is isolated from the outside in the test process, water leakage and air leakage are avoided, and the test accuracy is further ensured. The sealing component is preferably made of silica gel, has good corrosion resistance and can still keep good sealing effect under simulated environments such as salt water mist.
The steel pile 1, the supporting frame 8-4, the inverted triangle body tip cone 8-1 and the tip cone rod 8-2 are all made of stainless steel materials, so that the supporting force is good, and the steel pile is not easy to be corroded by special environments. The test box 2 is an acrylic test box 2, has good bearing capacity, supporting force and corrosion resistance, and meanwhile, the transparent acrylic box body is convenient for test staff to observe the state change in the test box 2.
The working process of the utility model is as follows:
s1, using a die to hydrate the reinforced concrete composite material into a reinforced concrete sample with a fixed size;
s2, opening a sample feeding door, feeding a dried reinforced concrete sample into a test box, stably placing the sample in rectangular grooves of two hemispherical guide blocks, closing the sealed sample feeding door, locking, and closing a waste liquid valve;
s3, pulling out the pin above the guide sleeve, and lowering the tip cone rod until the inverted triangle tip cone compresses the middle part of the reinforced concrete sample; placing a plurality of load blocks into the load disc according to test requirements;
s4, adding enough seawater into the test box according to specific test requirements, starting a spraying mechanism and an artificial flushing mechanism, providing an artificial marine environment for the test box, and performing a sample corrosion test; actively observing the appearance change of the sample and the change of the corrosion thickness scale in the test process;
s5, after the test is finished, closing the spraying mechanism and the surge simulating mechanism, and opening the waste liquid valve to discharge the seawater; taking down the weight, lifting the tip cone rod and fixing the tip cone rod by using a pin, so that the inverted triangle tip cone leaves the surface of the sample; the reinforced concrete sample is completely taken out through a sample feeding door, the appearance of the reinforced concrete sample is observed, and further comparison tests are carried out.
The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. The utility model provides a reinforced concrete is marine simulation corrosion test device for combined material which characterized in that: comprises two steel piles (1) and a test box (2) fixedly arranged at the upper parts of the two steel piles (1); the two steel piles (1) are anchored on the ground through anchor bolts (13), and the steel piles (1) upwards penetrate through the test box (2); the top of the steel pile (1) is provided with circular arc-shaped guide sliding nests along the length direction of the steel pile (1), a hemispherical guide block (3) is slidably assembled in each guide sliding nest, a rectangular groove for placing a reinforced concrete sample (4) is formed above each hemispherical guide block (3), and two ends of the reinforced concrete sample (4) are respectively placed in the rectangular grooves of the two hemispherical guide blocks (3); a sample feeding door for taking and placing a reinforced concrete sample (4) is arranged on the side wall of the test box (2), and a water filling port (14) is arranged at the top of the test box (2); the test device further comprises a spraying mechanism for simulating an ocean salt fog air environment, a simulated surging mechanism for simulating ocean current surging and a load mechanism for simulating a load.
2. The marine simulation corrosion test device for reinforced concrete composite material according to claim 1, wherein: the spraying mechanism comprises a spraying table (6-1) arranged in a mounting groove at the upper part of the test box (2), a plurality of gas spray holes (6-2) and a plurality of liquid discharge spray holes (6-3) are formed in the front end face of the spraying table (6-1), the gas spray holes (6-2) and the liquid spray holes (6-3) are arranged in a staggered mode, and adjacent and close gas spray holes (6-2) and the liquid spray holes (6-3) form a spraying unit; the gas spray hole (6-2) is communicated with the compressed air pipeline (6-6), and the liquid spray hole (6-3) is communicated with the brine pipeline (6-7).
3. The marine simulation corrosion test device for reinforced concrete composite material according to claim 2, wherein: the blowing direction of the gas spray holes (6-2) and the blowing direction of the liquid spray holes (6-3) in the same spray unit are acute angles which are convenient for gas-liquid collision.
4. The marine simulation corrosion test device for reinforced concrete composite material according to claim 1, wherein: the surge simulating mechanism comprises a water spraying table (7-1), a liquid return pipe (7-3) and a liquid return pump (7-4); the water spraying bench (7-1) is tightly attached to one side wall of the test box (2), a plurality of hemispherical spray heads (7-2) are arranged on the front end face array of the water spraying bench (7-1), the tail end of the water spraying bench (7-1) is communicated with a liquid return port arranged at the bottom of the side wall of the water spraying bench (7-1) through a liquid return pipe (7-3), and a liquid return pump (7-4) for providing flowing power is arranged on the liquid return pipe (7-3).
5. The marine simulation corrosion test device for reinforced concrete composite material according to claim 1, wherein: the load mechanism comprises an inverted triangle body tip cone (8-1) pressed on the surface of the reinforced concrete sample (4), and a tip cone rod (8-2) connected with the inverted triangle body tip cone (8-1), wherein the tip cone rod (8-2) penetrates through the top plate of the test box (2) and then is connected with a load disc (8-3) capable of accommodating a plurality of load blocks (8-8), and the load disc (8-3) is horizontally arranged.
6. The marine simulation corrosion test device for the reinforced concrete composite material according to claim 5, wherein: the load mechanism further comprises a supporting frame (8-4) arranged outside the test box (2), a guide sleeve (8-5) is arranged at the position, corresponding to the tip cone rod (8-2), of the top plate of the supporting frame (8-4), and the tip cone rod (8-2) is in sliding fit with the guide sleeve (8-5).
7. The marine simulation corrosion test apparatus for reinforced concrete composite material according to claim 6, wherein: the top edge of the supporting frame (8-4) is provided with a vertical corrosion thickness scale (8-6), and a pointer (8-7) for reading the corrosion thickness scale (8-6) is arranged on a tip cone rod (8-2) between the test box (2) and the supporting frame (8-4); a vertical water level gauge (9) is further arranged in the test box (2).
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