CN105334111A - Pressure application test device and test method for reinforced concrete sample in salt-spray environment - Google Patents

Pressure application test device and test method for reinforced concrete sample in salt-spray environment Download PDF

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Publication number
CN105334111A
CN105334111A CN201510790592.6A CN201510790592A CN105334111A CN 105334111 A CN105334111 A CN 105334111A CN 201510790592 A CN201510790592 A CN 201510790592A CN 105334111 A CN105334111 A CN 105334111A
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CN
China
Prior art keywords
reinforced concrete
test specimen
concrete test
salt mist
sliding shoe
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CN201510790592.6A
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Chinese (zh)
Inventor
程旭东
乔垚明
盛余飞
田雪凯
徐立
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中国石油大学(华东)
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Application filed by 中国石油大学(华东) filed Critical 中国石油大学(华东)
Priority to CN201510790592.6A priority Critical patent/CN105334111A/en
Publication of CN105334111A publication Critical patent/CN105334111A/en

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Abstract

The invention belongs to the field of scientific experiments of materials and particularly relates to a pressure application test device and test method for a reinforced concrete sample in a salt-spray environment. The test device comprises a bearing platform, a salt-spray environment cabinet, a jack and a pressure sensor, wherein a bearing reaction frame and a loaded reaction frame are arranged at two ends of the bearing platform respectively, and the salt-spray environment cabinet is arranged in the middle of the bearing platform; the jack is fixed on the bearing reaction frame, and the pressure sensor is fixed on the loaded reaction frame; the reinforced concrete sample is placed in the salt-spray environment cabinet, the salt-spray environment cabinet provides the reinforced concrete sample with a salt-spray environment required by an experiment, the jack loads the reinforced concrete sample, and the pressure sensor measures the load value borne by reinforced concrete. The test device can apply a pressure load to the reinforced concrete sample in the salt-spray environment, the load range is wide, the load value can be adjusted freely in an experiment process, little salt spray leaks in load applying and maintaining processes, test data are accurate, the data can be read at any time, and the service life is long.

Description

Reinforced concrete test specimen pressure test device and test method under salt mist environment
Technical field
The invention belongs to Experiment of Material Science field, particularly, relate to reinforced concrete test specimen pressure test device and test method under a kind of salt mist environment.
Background technology
Coastal building adopts reinforced concrete structure more, there is chlorion in marine atmosphere, and chlorion can cause steel bar corrosion, and then causes the destruction of reinforced concrete structure.For the permanance research of reinforced concrete, generally adopt artificial climate environmental experiment method Reality simulation environment in the lab, researchist thinks can the chlorine salt corrosion that causes reinforced concrete of simulated marine atmosphere environment preferably to the method for reinforced concrete test specimen cycle spray salt fog, but Wuzhong big academician point out, the common results of the multiple factors often of the reinforced concrete durability damage under true nature environment, concrete permanance research should consider relative multiple factors.At serviceability limit stage, reinforced concrete member always undergos the double action of load and chloride erosion, in order to the endurance quality of reinforced concrete member under the service state of Efficient Evaluation coastland, be necessary to carry out the endurancing under chloride erosion and the multiple coupled effect of compressive load.
Villaumite is carried out in current laboratory and compressive load is multiple coupled when testing, many employings apply counterweight mode to reinforced concrete test specimen under salt mist environment, but the load level that the method applies is limited, for the component that some load-bearing capacitys are higher, adopt the normal load level in the method be difficult to reach it stage under arms.Existing test unit, also have and adopt post-tensioned prestressing method to apply axle pressure load to reinforced concrete test specimen, because under action of long-term load, test unit can relax because of concrete creep effects or reinforcement stresses, test unit is caused to be difficult to keep original load level, and this method can not read payload values size, makes troubles to experimenter.Application publication number is that the patent of invention of CN102721637A discloses concrete durability multifunctional experiment system and method under a kind of continuous effect, this invention can Real-Time Monitoring and adjustment load, the experimental error avoiding reinforcement stresses to relax causing, but this invention is only applicable to Seawater corrosion, utilize this invention can not carry out the multiple coupled test of salt fog and load.
Summary of the invention
For solving above technical matters and overcome existing equipment deficiency, to the invention provides under a kind of salt mist environment reinforced concrete test specimen pressure test device, loading range ability large, can free controlled pressure load and read data at any time.
For achieving the above object, the present invention adopts following technical proposals:
Reinforced concrete test specimen pressure test device under salt mist environment, comprising: cushion cap, salt mist environment case, lifting jack, pressure transducer; Wherein: cushion cap two ends are respectively arranged with bearing reaction frame, stand under load reaction frame, are provided with salt mist environment case in the middle part of cushion cap; Lifting jack fixed by bearing reaction frame, fixation pressure sensor on stand under load reaction frame; Reinforced concrete test specimen is positioned in salt mist environment case, and salt mist environment case provides the salt mist environment needed for experiment for reinforced concrete test specimen, and jack pair reinforced concrete test specimen loads, and the payload values that reinforced concrete bears measured by pressure transducer.
Compared with prior art, beneficial effect of the present invention is as follows: can apply compressive load to the reinforced concrete test specimen under salt mist environment, loading range ability is large, can free adjustment payload values size in experimentation, apply and sustained loading process in salt fog reveal lack, test data is accurate, can read data at any time, long service life.
Accompanying drawing explanation
Fig. 1 is test unit structure schematic front view;
Fig. 2 is test unit structure schematic side view;
In figure: 1, cushion cap, 2, salt mist environment case, 3, lifting jack, 4, pressure transducer, 5, bearing reaction frame, 6, stand under load reaction frame, 7, reinforced concrete test specimen, 8, main box, 9, load sliding tube, 10, load sliding shoe, 11, sliding tube bracing frame is loaded, 12, stand under load sliding tube, 13, stand under load sliding shoe, 14, stand under load sliding tube bracing frame, 15, pressurization driving head, 16, specimen stage, 17, shower nozzle, 18, power spraye, 19, brine tank.
Embodiment
As shown in Figure 1 and Figure 2, reinforced concrete test specimen pressure test device under salt mist environment, comprising: cushion cap 1, salt mist environment case 2, lifting jack 3, pressure transducer 4; Wherein: cushion cap 1 two ends are respectively arranged with bearing reaction frame 5, stand under load reaction frame 6, are provided with salt mist environment case 2 in the middle part of cushion cap 1; Bearing reaction frame 5 is fixed lifting jack 3, fixation pressure sensor 4 on stand under load reaction frame 6; Reinforced concrete test specimen 7 is positioned in salt mist environment case 2, and salt mist environment case 2 provides the salt mist environment needed for experiment for reinforced concrete test specimen 7, and lifting jack 3 pairs of reinforced concrete test specimens 7 load, and the payload values that reinforced concrete 7 bears measured by pressure transducer 4.
Salt mist environment case 2, comprising: main box 8, and main box 8 is square box; Main box 8 is fixed with and loads sliding tube 9 on the tank wall of lifting jack 3 side, loads in sliding tube 9 to arrange to load sliding shoe 10, and loading sliding shoe 10 one end is connected with lifting jack 3, one end contacts with the reinforced concrete test specimen 7 in main box 8; Cushion cap 1 is arranged and loads sliding tube bracing frame 11, load sliding tube 9 and supported by loading sliding tube bracing frame 11.
Main box 8 is fixed with stand under load sliding tube 12 towards answering on the tank wall of pressure transducer 4 side, has stand under load sliding shoe 13 in stand under load sliding tube 12, and stand under load sliding shoe 13 one end is connected with pressure transducer 4, one end contacts with the reinforced concrete test specimen 7 in main box 8; Cushion cap 1 is arranged stand under load sliding tube bracing frame 14, stand under load sliding tube 12 is supported by stand under load sliding tube bracing frame 14.
One end that loading sliding shoe 10, stand under load sliding shoe 13 contact with reinforced concrete test specimen 7 is all fixed with the driving head 15 that pressurizes, and pressurization driving head 15 is square plate.
Specimen stage 16 is set bottom main box 8, specimen stage 16 is placed reinforced concrete test specimen 7.
Main box top is provided with shower nozzle 17, and shower nozzle 17 is positioned at above reinforced concrete test specimen 7; Shower nozzle 17 is connected with the power spraye 18 outside main box by conduit, and power spraye 18 is by tubes connection brine tank 19.
Described loading sliding shoe 10, stand under load sliding shoe 13, pressurization driving head 15 adopt pressure-resistant corrosion-resistant plastics, and main box 8, specimen stage 16 adopt heat-and corrosion-resistant plastics, and the material adopted is PVC, PP plastics such as.
Under salt mist environment, reinforced concrete test specimen pressurized tests method is as follows:
Open salt mist environment case 2, specimen stage 16 is placed reinforced concrete test specimen 7, reinforced concrete test specimen 7 is aimed at and is loaded sliding shoe 10, stand under load sliding shoe 13, the fixing driving head 15 that pressurizes in the one end loading sliding shoe 10, stand under load sliding shoe 13 contacts with reinforced concrete test specimen 7; Then lifting jack 3 is controlled to loading sliding shoe 10 load application, load sliding shoe 10 and load is passed to reinforced concrete test specimen 7, load is passed to stand under load sliding shoe 13 by reinforced concrete test specimen 7, load is passed to pressure transducer 4 by stand under load sliding shoe 13 again, and pressure transducer 4 is measured and read payload values; When after the payload values that the data shown by pressure transducer 4 reach required, lifting jack 3 stops continuing to load, and maintains this load; Lifting jack 3 pairs of reinforced concrete test specimen loadeds, close salt mist environment case, starts to spray, and power spraye 18 extracts the salt solution in brine tank 19, sprayed by shower nozzle 17 pairs of reinforced concrete test specimens 7; After a period of time, stop spraying, loosen lifting jack 3, take out reinforced concrete test specimen 7, complete test operation.

Claims (8)

1. a reinforced concrete test specimen pressure test device under salt mist environment, comprising: cushion cap, salt mist environment case, lifting jack, pressure transducer; It is characterized in that: cushion cap two ends are respectively arranged with bearing reaction frame, stand under load reaction frame, are provided with salt mist environment case in the middle part of cushion cap; Lifting jack fixed by bearing reaction frame, fixation pressure sensor on stand under load reaction frame; Reinforced concrete test specimen is positioned in salt mist environment case, and salt mist environment case provides the salt mist environment needed for experiment for reinforced concrete test specimen, and jack pair reinforced concrete test specimen loads, and the payload values that reinforced concrete bears measured by pressure transducer.
2. reinforced concrete test specimen pressure test device under salt mist environment according to claim 1, is characterized in that: salt mist environment case, comprising: main box, and main box is square box; Main box is fixed with loading sliding tube on the tank wall of lifting jack side, loads in sliding tube and arranges loading sliding shoe, and loading sliding shoe one end is connected with lifting jack, one end contacts with the reinforced concrete test specimen in main box; Cushion cap is arranged and loads sliding tube bracing frame, load sliding tube and support by loading sliding tube bracing frame.
3. reinforced concrete test specimen pressure test device under the salt mist environment according to claim 1-2, it is characterized in that: main box is fixed with stand under load sliding tube towards answering on the tank wall of pressure transducer side, there is stand under load sliding shoe in stand under load sliding tube, stand under load sliding shoe one end is connected with pressure transducer, one end contacts with the reinforced concrete test specimen in main box; Cushion cap is arranged stand under load sliding tube bracing frame, stand under load sliding tube is supported by stand under load sliding tube bracing frame.
4. reinforced concrete test specimen pressure test device under the salt mist environment according to claim 1-3, it is characterized in that: one end that loading sliding shoe, stand under load sliding shoe contact with reinforced concrete test specimen is all fixed with pressurization driving head, and pressurization driving head is square plate.
5. under the salt mist environment according to claim 1-4, reinforced concrete test specimen pressure test device, is characterized in that: arrange specimen stage bottom main box, specimen stage is placed reinforced concrete test specimen.
6. reinforced concrete test specimen pressure test device under the salt mist environment according to claim 1-5, is characterized in that: main box top is provided with shower nozzle, shower nozzle is positioned at above reinforced concrete test specimen; Shower nozzle is connected with the power spraye outside main box by conduit, and power spraye is by tubes connection brine tank.
7. reinforced concrete test specimen pressure test device under the salt mist environment according to claim 1-6, it is characterized in that: described loading sliding shoe, stand under load sliding shoe, pressurization driving head adopt pressure-resistant corrosion-resistant plastics, main box, specimen stage adopt heat-and corrosion-resistant plastics, and the material adopted is PVC, PP plastics such as.
8. reinforced concrete test specimen pressurized tests method under salt mist environment, reinforced concrete test specimen pressure test device under the salt mist environment adopting one of claim 1-7 described, it is characterized in that, concrete grammar is as follows: open salt mist environment case, specimen stage is placed reinforced concrete test specimen, reinforced concrete test specimen is aimed at and is loaded sliding shoe, stand under load sliding shoe, the fixing driving head that pressurizes in the one end loading sliding shoe, stand under load sliding shoe contacts with reinforced concrete test specimen; Then control jack pair and load sliding shoe load application, load sliding shoe and load is passed to reinforced concrete test specimen, load is passed to stand under load sliding shoe by reinforced concrete test specimen, and load is passed to pressure transducer by stand under load sliding shoe again, and pressure transducer is measured and read payload values; When after the payload values that the data shown by pressure transducer reach required, lifting jack stops continuing to load, and maintains this load; Jack pair reinforced concrete test specimen loaded, close salt mist environment case, starts to spray, and power spraye extracts the salt solution in brine tank, is sprayed to reinforced concrete test specimen by shower nozzle; After a period of time, stop spraying, loosen lifting jack, take out reinforced concrete test specimen, complete test operation.
CN201510790592.6A 2015-11-17 2015-11-17 Pressure application test device and test method for reinforced concrete sample in salt-spray environment CN105334111A (en)

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CN105738176A (en) * 2016-03-07 2016-07-06 河海大学 Multifunctional device and method for model test pile foundation processing and detection
CN106018251A (en) * 2016-05-24 2016-10-12 江苏大学 Concrete component for load-solution erosion long-term coupling action
CN109100213A (en) * 2018-09-17 2018-12-28 广东华坤建设集团有限公司 A kind of concrete strength inspection device of assembled stair
CN109374502A (en) * 2018-11-19 2019-02-22 江苏科技大学 A kind of head difference infiltration experiment device held under the conditions of lotus

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Publication number Priority date Publication date Assignee Title
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CN109100213A (en) * 2018-09-17 2018-12-28 广东华坤建设集团有限公司 A kind of concrete strength inspection device of assembled stair
CN109100213B (en) * 2018-09-17 2020-12-04 广东华坤建设集团有限公司 Concrete strength detection device of assembled stair
CN109374502A (en) * 2018-11-19 2019-02-22 江苏科技大学 A kind of head difference infiltration experiment device held under the conditions of lotus

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Inventor after: Cheng Xudong

Inventor after: Qiao Yaoming

Inventor after: Peng Wenshan

Inventor after: Sheng Yufei

Inventor after: Xu Li

Inventor after: Tian Xuekai

Inventor before: Cheng Xudong

Inventor before: Qiao Yaoming

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Inventor before: Tian Xuekai

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Application publication date: 20160217

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