CN106442304B - Brine gravity penetration corrosion test device for steel bars in concrete beam plate - Google Patents
Brine gravity penetration corrosion test device for steel bars in concrete beam plate Download PDFInfo
- Publication number
- CN106442304B CN106442304B CN201610850409.1A CN201610850409A CN106442304B CN 106442304 B CN106442304 B CN 106442304B CN 201610850409 A CN201610850409 A CN 201610850409A CN 106442304 B CN106442304 B CN 106442304B
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- cylinder
- steel bars
- baffle
- test
- brine
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 26
- 239000010959 steel Substances 0.000 title claims abstract description 26
- 239000004567 concrete Substances 0.000 title claims abstract description 21
- 230000007797 corrosion Effects 0.000 title claims abstract description 21
- 238000005260 corrosion Methods 0.000 title claims abstract description 21
- 239000012267 brine Substances 0.000 title claims abstract description 20
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 title claims abstract description 20
- 230000005484 gravity Effects 0.000 title claims abstract description 18
- 230000035515 penetration Effects 0.000 title claims abstract description 16
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 12
- 238000003780 insertion Methods 0.000 claims abstract description 6
- 230000037431 insertion Effects 0.000 claims abstract description 6
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 235000014121 butter Nutrition 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000005056 compaction Methods 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 4
- 230000001133 acceleration Effects 0.000 abstract description 2
- 238000011158 quantitative evaluation Methods 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
Abstract
The invention discloses a brine gravity penetration corrosion test device for steel bars in a concrete beam plate, which comprises a rectangular bottom plate for bearing a reinforced concrete test piece, wherein a cylinder for containing brine is arranged at the upper part of the rectangular bottom plate, a front baffle plate, a rear baffle plate, a left baffle plate and a right baffle plate are detachably connected around the rectangular bottom plate, at least two connecting holes for penetrating the steel bars are correspondingly arranged at the bottoms of the left baffle plate and the right baffle plate, positioning blocks are further arranged at the tops of the left baffle plate and the right baffle plate, a positioning rod for controlling the insertion depth of the cylinder is arranged between the positioning blocks, and a buckle connected with the positioning rod is arranged on the cylinder. The device is used for carrying out an electrifying acceleration corrosion test on the steel bars in the reinforced concrete beam plates under the action of brine gravity penetration, observing the condition of resisting chloride ion corrosion on the steel bars in the reinforced concrete beam plates, and carrying out quantitative evaluation on the durability of the reinforced concrete.
Description
Technical Field
The invention relates to a steel bar corrosion test device, in particular to a brine gravity penetration corrosion test device for steel bars in a concrete beam plate.
Background
The concrete of different types has different strength, different shapes and good overall performance, and is widely applied to construction, water conservancy projects and other projects. Corrosion of steel bars from salt water pollution from marine environments, deicing salt environments, saline-alkali soil and some industrial environments is the most dominant and prevalent disease that severely threatens durability of concrete structures, resulting in tremendous direct and indirect losses. It is therefore necessary to develop a new type of brine gravity penetration corrosion test apparatus for testing durability problems of concrete structures caused by brine penetration by using a test method, with which related method studies can be performed.
Disclosure of Invention
The invention relates to a device for researching corrosion test of steel bars in a reinforced concrete beam slab under the action of gravity penetration of salt water. The device is used for carrying out an electrifying acceleration corrosion test on the steel bars in the reinforced concrete beam plates under the action of brine gravity penetration, observing the condition of resisting chloride ion corrosion on the steel bars in the reinforced concrete beam plates, and carrying out quantitative evaluation on the durability of the reinforced concrete.
The invention aims at realizing the following technical scheme:
the utility model provides a salt solution gravity infiltration corrosion test device of reinforcing bar in concrete beam slab, is including the rectangle bottom plate that is used for bearing reinforced concrete test piece, the upper portion of rectangle bottom plate is equipped with the drum that is used for holding salt solution, detachable all around of rectangle bottom plate is connected with preceding baffle, backplate, left baffle and right baffle, and the bottom of left baffle and right baffle is equipped with two at least connecting holes that are used for wearing to establish the reinforcing bar correspondingly, and the top of left baffle and right baffle still is equipped with the locating piece, be equipped with between the locating piece and be used for control the locating lever of drum depth of insertion, be equipped with on the drum with the buckle that the locating lever links to each other.
The cylinder is composed of a circular tube with the diameter of 150-250 mm.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
(1) Fills the blank of the penetration corrosion test of the steel bars in the concrete beam slab under the action of the gravity of the brine;
(2) The invention aims at the experiment carried out under the action of the gravity of the brine, and is more in line with engineering practice;
(3) Control is easier to realize, the chloride ion permeation quantity can be calculated according to the falling of the water level, and a chloride ion transfer quantization model is established;
(4) The inventive device simplifies the test scheme, improves the effectiveness, and provides a basis for setting the brine electrifying accelerated corrosion specification of the steel bars in the reinforced concrete beam plate under the gravity in the future.
Drawings
Fig. 1 is a schematic view of a part of the structure of the present invention.
Fig. 2 is a schematic structural view of the cylinder of the present invention.
Fig. 3 is a schematic view of the usage state structure of the present invention.
Reference numerals: 1-a rectangular bottom plate 2-a front baffle plate 3-a rear baffle plate 4-a left baffle plate 5-a right baffle plate 6-a connecting block 7-a positioning block 8-a cylinder 9-a buckle 10-a reinforcing steel bar
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1 to 3, the brine gravity penetration corrosion test device for the steel bars in the concrete beam plate comprises a rectangular bottom plate 1 for bearing reinforced concrete, a cylinder 8 for containing brine is arranged on the upper portion of the rectangular bottom plate 1, a front baffle 2, a rear baffle 3, a left baffle 4 and a right baffle 5 are detachably connected to the periphery of the rectangular bottom plate 1, the front baffle 2, the rear baffle 3, the left baffle 4 and the right baffle 5 jointly form a die, two connecting holes 6 for penetrating the steel bars 10 are correspondingly arranged at the bottoms of the left baffle 4 and the right baffle 5, a positioning block 7 is further arranged at the tops of the left baffle 4 and the right baffle 5, a positioning rod for controlling the insertion depth of the cylinder is arranged between the positioning blocks 7, and a buckle 9 connected with the positioning rod is arranged on the cylinder 8.
In the embodiment, the rectangular bottom plate 1 is square, the side length is 550mm, and the thickness is 10mm; the front baffle 2 and the rear baffle 3 are rectangular, the length is 550mm, the height is 120mm, and the thickness is 10mm; the left baffle 4 and the baffle 5 are rectangular, the length is 500mm, the height is 120mm, and the thickness is 10mm; the cylinder 8 was a PVC pipe having an outer diameter of 200mm, a height of 400mm and a depth into the test tank of 50mm.
The device can be used for carrying out a brine gravity penetration corrosion test of concrete beam slab steel bars, and comprises the following steps:
firstly, cleaning reinforcing steel bars (derusting), stirring and preparing concrete materials to be tested, and uniformly stirring in a stirrer; cleaning the assembly test device, and coating a thin layer of lubricant, such as engine oil, on the inner surface of the clean test device so as to facilitate the removal of the die; inserting the cleaned (derusted) steel bars into the connecting holes 6, and filling butter into the gaps to prevent slurry leakage;
secondly, pouring the stirred concrete material into a prepared test device, shaping, and placing the concrete material on a vibrating table for vibrating compaction; simultaneously, the buckle 9 is fixed on the cylinder 8 according to the size, and two positioning steel bars are placed in the middle of the positioning block 7 and used for controlling the insertion depth of the cylinder 8; at the moment, the cylinder 8 is inserted into the vibrating compact test block until the buckle 9 contacts the positioning steel bar; filling up the gap between the cylinder 8 and the test block with mortar; forming and removing the die after 1 day;
finally, placing the formed test block into a standard curing chamber (at 20+/-1 ℃ and with relative humidity of more than 95%) for curing for 28 days, and then carrying out a brine gravity penetration corrosion test on the concrete beam slab reinforcement; and (3) repeating the steps as required to manufacture a plurality of test pieces to obtain a plurality of groups of test data.
Although the function and operation of the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to the above-described specific functions and operations, but the above-described specific embodiments are merely illustrative, not restrictive, and many forms can be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the appended claims, which are to be protected by the present invention.
Claims (1)
1. The brine gravity penetration corrosion test device for the steel bars in the concrete beam plate comprises a rectangular bottom plate for bearing a reinforced concrete test piece, and is characterized in that a cylinder for containing brine is arranged at the upper part of the rectangular bottom plate, a front baffle, a rear baffle, a left baffle and a right baffle are detachably connected to the periphery of the rectangular bottom plate, at least two connecting holes for penetrating the steel bars are correspondingly formed in the bottoms of the left baffle and the right baffle, a positioning block is further arranged at the top of the left baffle and the top of the right baffle, a positioning rod for controlling the insertion depth of the cylinder is arranged between the positioning blocks, a buckle connected with the positioning rod is arranged on the cylinder, the cylinder is formed by circular tubes with the diameter of 150-250mm, the rectangular bottom plate is square, the side length is 550mm, and the thickness is 10mm; the front baffle and the rear baffle are rectangular, the length is 550mm, the height is 120mm, and the thickness is 10mm; the left baffle and the right baffle are rectangular, the length is 500mm, the height is 120mm, and the thickness is 10mm; the cylinder is a PVC pipe with the outer diameter of 200mm, the height of the cylinder is 400mm, and the depth of the cylinder penetrating into the test device is 50mm;
the device can be used for carrying out a brine gravity penetration corrosion test of the concrete beam slab steel bar, and comprises the following steps:
firstly, cleaning reinforcing steel bars, stirring and preparing concrete materials to be tested, and uniformly stirring in a stirrer; cleaning the assembly test device, and coating a layer of lubricant on the inner surface of the clean test device; inserting the cleaned steel bars into the connecting holes, and filling butter into the gaps to prevent slurry leakage;
secondly, pouring the stirred concrete material into a prepared test device, shaping, and placing the concrete material on a vibrating table for vibrating compaction; simultaneously fixing the buckle on the cylinder according to the size, and placing two positioning steel bars in the middle of the positioning block for controlling the insertion depth of the cylinder; at the moment, the cylinder is inserted into the vibrating compact test block until the buckle contacts the positioning steel bar; filling gaps between the cylinder and the test block with mortar; forming and removing the die after 1 day;
finally, placing the formed test block into a standard curing room for curing for 28 days, wherein the curing room environment is 20+/-1 ℃ and the relative humidity is more than 95%, and performing a brine gravity penetration corrosion test of the concrete beam slab reinforcement; and (5) repeating the steps as required to manufacture a plurality of test pieces to obtain a plurality of groups of test data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850409.1A CN106442304B (en) | 2016-09-26 | 2016-09-26 | Brine gravity penetration corrosion test device for steel bars in concrete beam plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850409.1A CN106442304B (en) | 2016-09-26 | 2016-09-26 | Brine gravity penetration corrosion test device for steel bars in concrete beam plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106442304A CN106442304A (en) | 2017-02-22 |
| CN106442304B true CN106442304B (en) | 2023-12-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610850409.1A Active CN106442304B (en) | 2016-09-26 | 2016-09-26 | Brine gravity penetration corrosion test device for steel bars in concrete beam plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106442304B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620062A (en) * | 2008-07-03 | 2010-01-06 | 同济大学 | Method for testing control of accelerating corrosion of steel reinforcement in chlorine salt corrosion concrete |
| CN103424354A (en) * | 2013-08-06 | 2013-12-04 | 华南理工大学 | Method for detecting chlorine salt resistance of cement-based cushion block for reinforced concrete |
| CN204174761U (en) * | 2014-10-09 | 2015-02-25 | 四川省西南建安防腐工程有限公司 | A kind of anti-corrosion layer structure for concrete brine pit |
| CN105588751A (en) * | 2016-03-07 | 2016-05-18 | 长沙理工大学 | Reinforced concrete bonding segment drawing fatigue and corrosion coupling testing device and testing method |
| CN206504995U (en) * | 2016-09-26 | 2017-09-19 | 天津大学 | The salt solution gravity leakage corrosion experimental rig of reinforcing bar in concrete beam plate |
-
2016
- 2016-09-26 CN CN201610850409.1A patent/CN106442304B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620062A (en) * | 2008-07-03 | 2010-01-06 | 同济大学 | Method for testing control of accelerating corrosion of steel reinforcement in chlorine salt corrosion concrete |
| CN103424354A (en) * | 2013-08-06 | 2013-12-04 | 华南理工大学 | Method for detecting chlorine salt resistance of cement-based cushion block for reinforced concrete |
| CN204174761U (en) * | 2014-10-09 | 2015-02-25 | 四川省西南建安防腐工程有限公司 | A kind of anti-corrosion layer structure for concrete brine pit |
| CN105588751A (en) * | 2016-03-07 | 2016-05-18 | 长沙理工大学 | Reinforced concrete bonding segment drawing fatigue and corrosion coupling testing device and testing method |
| CN206504995U (en) * | 2016-09-26 | 2017-09-19 | 天津大学 | The salt solution gravity leakage corrosion experimental rig of reinforcing bar in concrete beam plate |
Non-Patent Citations (2)
| Title |
|---|
| 冷发光 等.《普通混凝土长期性能和耐久性能试验方法标准 》ＧＢ／Ｔ50082-2009简介.施工技术.第39卷(第39期),第2.2节. * |
| 胡鹏 等.全文.《天津理工大学学报》.2006,(第undefined期),全文. * |
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| CN106442304A (en) | 2017-02-22 |
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