CN102564933A - Concrete drying and watering cycle type accelerated corrosion test device - Google Patents
Concrete drying and watering cycle type accelerated corrosion test device Download PDFInfo
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- CN102564933A CN102564933A CN2011104549546A CN201110454954A CN102564933A CN 102564933 A CN102564933 A CN 102564933A CN 2011104549546 A CN2011104549546 A CN 2011104549546A CN 201110454954 A CN201110454954 A CN 201110454954A CN 102564933 A CN102564933 A CN 102564933A
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- corrosion test
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- watering cycle
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Abstract
The invention provides a concrete drying and watering cycle type accelerated corrosion test device, comprising a heat preservation corrosion test box, wherein a heating element is arranged on the heat preservation corrosion test box; at least two loading devices are arranged on the heat preservation corrosion test box; each loading device comprises a drying and watering cycle type corrosion test box on which a corrosive liquid is arranged, a four-column type spring loading frame for loading a concrete test piece and a hydraulic lifting machine; the drying and watering cycle type corrosion test box is arranged on a piston rod of the hydraulic lifting machine; the four-column type spring loading frame is connected with the heat preservation corrosion test box through a metal hanging rod of a cantilever; and the four-column type spring loading frame is located above the drying and watering cycle type corrosion test box. According to the concrete drying and watering cycle type accelerated corrosion test device disclosed by the invention, an ocean environment or an inland environment is simulated by an indoor multi-factor accelerated corrosion test to test a long-term damage and degradation rule of a structural concrete and forecast the service life of the structural concrete.
Description
One, technical field
The invention belongs to civil engineering material experiment field, relate in particular to the research of cement concrete permanance, particularly be in a kind of accelerated corrosion test research method of concrete under multifactor coupling under the drying and watering cycle condition.
Two, background technology
The drying and watering cycle condition is one of essential condition of concrete durability research, is one of essential environmental factors that is in concrete component deterioration in the SEA LEVEL VARIATION district.If want complete simulated field environment to carry out the drying and watering cycle experiment, the time that then needs is longer, therefore needs the laboratory accelerated tests of short period to come the simulated field environment that the permanance of concrete under the drying and watering cycle condition studied.Drying and watering cycle experiment majority before this is through a dead lift test specimen, perhaps uses automatic equipments such as drying and watering cycle case.
The former is the huge consumption to manpower, and works as test specimen quantity more for a long time, because of when carrying, having consumed the more time, is difficult to assurance drying time and soak time that accelerated tests designed, and is bigger to the experimental error influence.China is the technology prematurity still of control drying and watering cycle case automatically now, is difficult to guarantee control environment exactly simultaneously temperature and relative humidity.And immersion process is many to carry out in airtight casing, is difficult to test specimen temperature inside and relative humidity are monitored, and can support the method for testing to be restricted.Therefore the present invention has certain practical value.
Three, summary of the invention
Technical matters: to existing drying and watering cycle accelerated test method; Simplified method labour intensity is big; Automatically control drying and watering cycle case is difficult to long-term operate as normal and the test specimen built-in attribute is carried out the defective of difficulty of monitoring rate, the purpose of this invention is to provide a kind of concrete drying and watering cycle accelerated corrosion test device under chemistry-mechanics coupling of laborsaving highly effective.
Technical scheme:A kind of concrete drying and watering cycle accelerated corrosion test device; Comprise: insulation corrosion experiment case; On insulation corrosion experiment case, be provided with heating element, be provided with at least 2 chargers at insulation corrosion experiment case, described charger comprises: the drying and watering cycle corrosion test chamber of built-in corrosive liquid, be used for four-column type spring-loaded frame and hydraulic hoist that concrete sample loads; Said drying and watering cycle corrosion test chamber is located on the piston rod of hydraulic hoist; Said four-column type spring-loaded frame is connected in insulation corrosion experiment case through cantilever metal suspension rod, and said four-column type spring-loaded chord position is in the top of drying and watering cycle corrosion test chamber.
Beneficial effect:Compare with existing apparatus, the present invention has following characteristics:
Principal feature of the present invention is by inorganic heat preservation drying experiment chamber (case) constant temperature and humidity condition and cantilever mounted metal suspension rod to be provided; The corrosion spool that adopts four post spring stainless steel loading frames to load or not load is fixed or is hung on the cantilever metal suspension rod, guarantees that through manual or electric hydaulic up-down drying and watering cycle corrosion test chamber test specimen regularly soaks and drying cycles; Carry out concrete drying and watering cycle accelerated corrosion test according to this, simulate the long-term damage deterioration rule of marine environment or landlocked environmental testing structural concrete and predict its service life with indoor multifactor accelerated corrosion test.
(1) because the test period cycle long (reaching 1 ~ 2 year); Loading specimen heavy (greater than 30kg); Adopt hydraulic lift to control the height of immersion corrosion case; To reach the purpose of carrying out drying and watering cycle accelerated corrosion experiment, hundreds of times carrying test specimens have been saved and a large amount of manpowers and the time loss that produce.
(2) can control experimental temperature and relative humidity fast and exactly through Temperature and Humidity Control and heating arrangement, improved existing automatic drying and watering cycle case Inlet and outlet water slow, shortcomings such as wet slow and equipment performance poor stability fall.
(3) test specimen is not in the airtight fully device, can monitor test specimen built-in attribute Changing Pattern through imbedding means such as probe.
(4) can place the test specimen that loads or do not load in corrosion case bottom, as the test specimen of long period of soaking; Carry out simultaneously with drying and watering cycle accelerated corrosion experiment (load or do not load), accomplished " a tractor serves several purposes ", improved service efficiency.
(5) can adopt a plurality of corrosion casees to make an experiment simultaneously, under the environment of different etchant solutions, efficiently carry out many group tests simultaneously.
Four, description of drawings
Fig. 1 is the left view of the embodiment of the invention.
Fig. 2 is the front view of the embodiment of the invention
Among the figure,
1. cantilever metal suspension rod
2. drying and watering cycle corrosion test chamber
3. etchant solution
4. concrete sample
5. four-column type spring-loaded frame
6. be incubated the corrosion experiment case
7. hydraulic hoist
9. etchant solution
a
10. etchant solution
b
11. etchant solution
c
Five, embodiment
A kind of concrete drying and watering cycle accelerated corrosion test device; Comprise: insulation corrosion experiment case 6; On insulation corrosion experiment case 6, be provided with heating element 8, be provided with at least 2 chargers at insulation corrosion experiment case 6, described charger comprises: the drying and watering cycle corrosion test chamber 2 of built-in corrosive liquid, be used for four-column type spring-loaded frame 5 and hydraulic hoist 7 that concrete sample 4 loads; Said drying and watering cycle corrosion test chamber 2 is located on the piston rod of hydraulic hoist 7; Said four-column type spring-loaded frame 5 is connected in insulation corrosion experiment case 6 through cantilever metal suspension rod 1, and said four-column type spring-loaded frame 5 is positioned at the top of drying and watering cycle corrosion test chamber 2.
Chief component of the present invention is following:
1. inorganic light weight thermal insulation corrosion experiment case and temperature and humidity control device (30～60 ℃ adjustable)
The main effect of insulation corrosion experiment case is the heat leakage of insulation, constant temperature and humidity, minimizing internal and external environment.Temperature and humidity control in the experimental box comes from heating element, and temperature can be regulated in 30～60 ℃ of scopes automatically, and relative humidity is minimum to reach 30%.
2. stainless steel charger
Adopt four post spring stainless steel loading frames, test specimen is carried out bending load.The stiffness coefficient of spring is 200N/mm.
3. cantilever metal suspension rod
Employing is installed in the insulation corrosion experiment case cantilevered metal suspension rod and fixes the loading of corrosion spool and loading specimen not.
Hydraulic lift and the corrosion case
Soak the corrosion test casing that test specimen uses and be fixed on the hydraulic lift, but this system's free lifting and is regulated differing heights, make corrosion spool can be in the corrosive liquid as required or in the dry air.
It is following to utilize the present invention to carry out the drying and watering cycle accelerated corrosion experimental procedure of loading specimen:
A. in the inorganic heat preservation experimental box that heating and temperature and humidity control device, cantilever metal suspension rod and hydraulic lift Installation and Debugging is good, dispose one or more etchant solution (etchant solutions then
a,
bWith
c), put into one or more corrosion casees as etchant solution.
B. test specimen is loaded in the four post spring loading frames, and be fixed on the cantilever metal suspension rod.
C. after temperature is to dry 48h earlier under 60 ℃ of conditions; Carry out wetting-drying test, test specimen is put into corrosive liquid soak (8h) → be warming up to 60 ℃ (2h) → in that 60 ℃ of freeze-day with constant temperature test specimens (36h) → be cooled to 30 ℃ (2h) → test specimen is put into the drying and watering cycle system that corrosive liquid soaks (8h) carries out drying and watering cycle accelerated corrosion experiment.
According to the damage of the concrete sample under the multifactor coupling condition of certain period measurement deteriorate performance, the decay resistance of evaluation test specimen, and the concrete service life of predict.
Claims (1)
1. concrete drying and watering cycle accelerated corrosion test device; Comprise: insulation corrosion experiment case (6); On insulation corrosion experiment case (6), be provided with heating element (8); It is characterized in that be provided with at least 2 chargers at insulation corrosion experiment case (6), described charger comprises: the drying and watering cycle corrosion test chamber (2) of built-in corrosive liquid, be used for four-column type spring-loaded frame (5) and hydraulic hoist (7) that concrete sample (4) loads; Said drying and watering cycle corrosion test chamber (2) is located on the piston rod of hydraulic hoist (7); Said four-column type spring-loaded frame (5) is connected in insulation corrosion experiment case (6) through cantilever metal suspension rod (1), and said four-column type spring-loaded frame (5) is positioned at the top of drying and watering cycle corrosion test chamber (2).
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| CN2011104549546A CN102564933A (en) | 2011-12-31 | 2011-12-31 | Concrete drying and watering cycle type accelerated corrosion test device |
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| CN2011104549546A CN102564933A (en) | 2011-12-31 | 2011-12-31 | Concrete drying and watering cycle type accelerated corrosion test device |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937565A (en) * | 2012-10-23 | 2013-02-20 | 鞍钢股份有限公司 | Marine-splash-zone-simulating corrosion test device and testing method |
| CN102937611A (en) * | 2012-12-06 | 2013-02-20 | 华为技术有限公司 | Corrosion risk prompting method and early warning system |
| CN102944669A (en) * | 2012-11-15 | 2013-02-27 | 河海大学 | Hydraulic concrete destructive test system |
| CN102944481A (en) * | 2012-12-14 | 2013-02-27 | 重庆大学 | Geotechnique test piece dry-wet cycle test device under loaded action |
| CN103115861A (en) * | 2012-12-26 | 2013-05-22 | 中国人民解放军63653部队 | Accelerated corrosion method under landfill condition |
| CN103217377A (en) * | 2013-04-09 | 2013-07-24 | 长安大学 | Rapid determination device of salt corrosion resistance performance of concrete and determination method thereof |
| CN103776755A (en) * | 2013-08-15 | 2014-05-07 | 国家电网公司 | Corrosion, soaking and drying experimental system for reinforced concrete |
| CN103776983A (en) * | 2014-01-27 | 2014-05-07 | 甘肃省交通科学研究院有限公司 | Rock soil wetting-drying cyclic experiment apparatus |
| CN104155198A (en) * | 2014-08-05 | 2014-11-19 | 河海大学 | Device for detecting solution erosion resistance condition of concrete when tensioned |
| CN103293091B (en) * | 2013-05-21 | 2016-04-27 | 青海省交通科学研究院 | The test method of cement concrete spontaneous corrosion characteristic under a kind of salt enrichment environment |
| CN105806769A (en) * | 2016-03-18 | 2016-07-27 | 东南大学 | Accelerated corrosion test device and method for FRP reinforcement sea water and sea sand concrete members |
| CN106153525A (en) * | 2015-03-19 | 2016-11-23 | 中国计量学院 | A kind of ageing test apparatus simulating the environment immersion of real sea |
| CN106769829A (en) * | 2017-01-24 | 2017-05-31 | 中石化炼化工程（集团）股份有限公司 | A kind of method and apparatus of live Corrosion monitoring |
| CN109580914A (en) * | 2019-01-15 | 2019-04-05 | 三峡大学 | A kind of dynamic water circulation and rock argillization process simulation device and test method under loading condition |
| CN110196189A (en) * | 2019-07-04 | 2019-09-03 | 河北工程大学 | A kind of salt-is wet-heat effect under bituminous concrete mechanical property Acceleration study device and method |
| CN113092723A (en) * | 2021-04-07 | 2021-07-09 | 中煤科工集团重庆研究院有限公司 | Mud rock expansion test device |
| CN114965244A (en) * | 2022-07-21 | 2022-08-30 | 太原工业学院 | Method for evaluating fatigue performance of magnesium alloy welding joint in corrosive environment |
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2011
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2491826Y (en) * | 2001-04-24 | 2002-05-15 | 中国人民解放军空军第一研究所 | Period soaking corrosion test box |
| CN201397288Y (en) * | 2009-05-08 | 2010-02-03 | 中国铁道科学研究院铁道建筑研究所 | Concrete sulfate corrosion wet-dry circle testing machine |
| CN201757731U (en) * | 2010-01-25 | 2011-03-09 | 广州大学 | Loading device for concrete endurance test |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937565A (en) * | 2012-10-23 | 2013-02-20 | 鞍钢股份有限公司 | Marine-splash-zone-simulating corrosion test device and testing method |
| CN102944669A (en) * | 2012-11-15 | 2013-02-27 | 河海大学 | Hydraulic concrete destructive test system |
| CN102937611A (en) * | 2012-12-06 | 2013-02-20 | 华为技术有限公司 | Corrosion risk prompting method and early warning system |
| CN102944481A (en) * | 2012-12-14 | 2013-02-27 | 重庆大学 | Geotechnique test piece dry-wet cycle test device under loaded action |
| CN103115861A (en) * | 2012-12-26 | 2013-05-22 | 中国人民解放军63653部队 | Accelerated corrosion method under landfill condition |
| CN103217377B (en) * | 2013-04-09 | 2015-04-22 | 长安大学 | Rapid determination device of salt corrosion resistance performance of concrete and determination method thereof |
| CN103217377A (en) * | 2013-04-09 | 2013-07-24 | 长安大学 | Rapid determination device of salt corrosion resistance performance of concrete and determination method thereof |
| CN103293091B (en) * | 2013-05-21 | 2016-04-27 | 青海省交通科学研究院 | The test method of cement concrete spontaneous corrosion characteristic under a kind of salt enrichment environment |
| CN103776755A (en) * | 2013-08-15 | 2014-05-07 | 国家电网公司 | Corrosion, soaking and drying experimental system for reinforced concrete |
| CN103776983B (en) * | 2014-01-27 | 2015-08-05 | 甘肃省交通科学研究院有限公司 | Ground drying and watering cycle experimental provision |
| CN103776983A (en) * | 2014-01-27 | 2014-05-07 | 甘肃省交通科学研究院有限公司 | Rock soil wetting-drying cyclic experiment apparatus |
| CN104155198A (en) * | 2014-08-05 | 2014-11-19 | 河海大学 | Device for detecting solution erosion resistance condition of concrete when tensioned |
| CN106153525A (en) * | 2015-03-19 | 2016-11-23 | 中国计量学院 | A kind of ageing test apparatus simulating the environment immersion of real sea |
| CN105806769A (en) * | 2016-03-18 | 2016-07-27 | 东南大学 | Accelerated corrosion test device and method for FRP reinforcement sea water and sea sand concrete members |
| CN105806769B (en) * | 2016-03-18 | 2019-04-30 | 东南大学 | FRP arrangement of reinforcement seawater sea-sand concrete member accelerated corrosion experimental rig and method |
| CN106769829A (en) * | 2017-01-24 | 2017-05-31 | 中石化炼化工程（集团）股份有限公司 | A kind of method and apparatus of live Corrosion monitoring |
| CN109580914A (en) * | 2019-01-15 | 2019-04-05 | 三峡大学 | A kind of dynamic water circulation and rock argillization process simulation device and test method under loading condition |
| CN109580914B (en) * | 2019-01-15 | 2021-11-02 | 三峡大学 | Rock argillization process simulation device and test method under dynamic water circulation and load conditions |
| CN110196189A (en) * | 2019-07-04 | 2019-09-03 | 河北工程大学 | A kind of salt-is wet-heat effect under bituminous concrete mechanical property Acceleration study device and method |
| CN113092723A (en) * | 2021-04-07 | 2021-07-09 | 中煤科工集团重庆研究院有限公司 | Mud rock expansion test device |
| CN114965244A (en) * | 2022-07-21 | 2022-08-30 | 太原工业学院 | Method for evaluating fatigue performance of magnesium alloy welding joint in corrosive environment |
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Application publication date: 20120711 |