CN105588778B - Concrete water absorption rate experimental provision - Google Patents
Concrete water absorption rate experimental provision Download PDFInfo
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- CN105588778B CN105588778B CN201610147559.6A CN201610147559A CN105588778B CN 105588778 B CN105588778 B CN 105588778B CN 201610147559 A CN201610147559 A CN 201610147559A CN 105588778 B CN105588778 B CN 105588778B
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- gear
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- balance supporting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
- G01N5/025—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content for determining moisture content
Abstract
It is an object of the invention to provide concrete water absorption rate experimental provision,Including housing,Balance supporting plate,Gear train,Water-stop sheet is installed in housing,Water-stop sheet divides housing 135 into draft regulation room and discharge hydroecium,Gear train is arranged in draft regulation room,Gear train includes first gear,Second gear,3rd gear,Second gear is meshed with first gear and the 3rd gear respectively,Fitting depth adjusting rod in first gear,Installation balance above balance supporting plate,Three test specimen fixed claws are circumferentially uniformly arranged on balance,Stretch in draft regulation room and be affixed on water-stop sheet below balance supporting plate,The bottom of balance supporting plate sets balance supporting plate sawtooth,Balance supporting plate sawtooth engages with the 3rd gear,The lower section of discharge hydroecium offers water inlet and discharge outlet respectively,The top of discharge hydroecium communicates with test specimen fixed claw position.The present invention can simplify measuring process with the draft of simple and convenient control concrete water absorption rate, time saving and energy saving.
Description
Technical field
The present invention relates to a kind of experimental provision, specifically concrete experiments device.
Background technology
High-strength concrete is as a kind of new construction material, so that its compression strength is high, non-deformability is strong, density is big, hole
The low superiority of gap rate, it is widely used in high building structure, long-span bridge girder construction and some unique constructions.
The characteristics of high-strength concrete maximum is compression strength height, generally mixed doubt soil 4~6 times of regular tenacity, therefore can reduce component
Section, therefore optimum is used for skyscraper.Meanwhile foam concrete is as a kind of light heat insulation material, in construction market
Also it is widely used.
The compression strength of high-strength concrete is high, non-deformability is strong, big these features low with porosity of density mainly by
Determined in its low water-cement ratio, relative to general concrete, in early days because the moisture of binder materials aquation consumption is more, after 28 days
Concrete strength increases closely related with concrete water absorption rate.
When foam concrete is due to applied to heat preservation structural component, because its water absorption rate is excessive so that unit weight rises, heat-insulating property
Decline, in cold environments, then caused by Frozen-thawed cycled intensity and structure loss.This durability ten for foam concrete
It is unfavorable to divide.
Due to the extensive use of high-strength concrete and foam concrete, the research in terms of water absorption rate was related in recent years and was also got over
Come more, the influence of the water absorption rate of concrete to Practical Project gradually increases, to engineering construction and concrete durability
Aspect has practical significance.
The content of the invention
It is an object of the invention to provide can save substantial amounts of manpower and improve the efficiency of experiment and the concrete of accuracy
Water absorption rate experimental provision.
The object of the present invention is achieved like this：
Concrete water absorption rate experimental provision of the present invention, it is characterized in that：Including housing, balance supporting plate, gear train, in housing
Water-stop sheet is installed, water-stop sheet divides housing 135 into draft regulation room and discharge hydroecium, and gear train is adjusted installed in draft
In room, the gear train include first gear, second gear, the 3rd gear, second gear respectively with first gear and the 3rd tooth
Wheel is meshed, fitting depth adjusting rod in first gear, installation balance above balance supporting plate, and three are circumferentially uniformly arranged on balance
Individual test specimen fixed claw, balance supporting plate lower section stretch in draft regulation room and are affixed on water-stop sheet, balance supporting plate
Bottom sets balance supporting plate sawtooth, and balance supporting plate sawtooth engages with the 3rd gear, and the lower section of discharge hydroecium opens up respectively
There are water inlet and discharge outlet, the top of discharge hydroecium communicates with test specimen fixed claw position.
The present invention can also include：
1st, the balance quantity in balance supporting plate is 3, and pressure sensing is respectively mounted between each balance and balance supporting plate
Device.
2nd, described housing is waterproof lucite.
Advantage of the invention is that：Because the construction problem of conventional balance causes what the concrete moisture content test can only be artificially
Concrete is entered in water, takes out carry out weighing mass change at regular intervals, the construction that the present invention changes balance can be with
During experiment, remove the artificial test specimen that takes out from the trouble weighed, the direct reading on balance.Simultaneously as day
Flat construction is tested and is divided into multiple periods using three one group of test specimens and measured, and eliminates and takes out meter one by one
Calculate the process averaged again.On the other hand because specific testing program can occur point according to the idea and requirement of researcher
Discrimination, such as：Concrete sample surface, which is invaded, not to be had in water 3~10mm not wait (3~10 simply to emphasize to be required not according to researcher here
With being likely to occur different operating modes), the present invention is more humane devise experimental rig can be with artificial regulatory draft and can be with
Regulate and control draft.And the right and left device is can symmetrically realize that the right and left submerges different depth, because principle is simple
With operate easily so serious forgiveness is higher, while material it is simple, it is cheap thus with cost than it is relatively low the characteristics of.
Brief description of the drawings
Fig. 1 is the sectional structure chart of the present invention；
Fig. 2 is the plan of the present invention；
Fig. 3 is the unilateral profile of the present invention；
Fig. 4 is the balance structure chart of the present invention；
Fig. 5 is the test specimen fixed hook pawl figure of the present invention.
Embodiment
Illustrate below in conjunction with the accompanying drawings and the present invention is described in more detail：
With reference to Fig. 1~5, the present invention includes three water feeding and draining device, draft adjusting means and test specimen meausring apparatus portions
Point；Described device casing itself is about 1200 × 800 × 600mm3Cuboid groove, there is provided the institute needed for 3 device experiments
There is space.Cuboid groove is vertically separated from centre by demarcation strip 12, and the experimental tank of left and right two is all 1200 × 400 × 600mm3。
In left and right, the two bottom sides of two test flumes are mounted with draft adjusting means and water feeding and draining device respectively, and in drainage arrangement
Magnetic valve is installed.The draft adjusting means and water feeding and draining device are in bottom, and centre is divided by vertical water-stop sheet 4
Open, two device volumes are respectively 1200 × 400 × 300mm3For the 1/4 of whole device.Wherein draft adjusting means by
Vertically occlusion is formed by three gears 6-1,6-2,6-3, and depth adjustment bar 5, the bar of depth adjustment bar are connected with bottom gears 6-1
End part is outside tank.Top gear 6-3 is engaged with the phase of 7 bottom sawtooth of balance supporting plate 13.Balance support board size is 1200
×500×10mm3.Balance supporting plate 7 is close to water-stop sheet 4, and water proof board size is 1200 × 400 × 10mm3.The opposite side of water-stop sheet 4
Water feeding and draining device in bottom be provided with water inlet 1, discharge outlet 2 and magnetic valve 3, magnetic valve 3 is arranged in discharge outlet 2, plumbing
An opening is provided with the top of device.3 balances 9, each balance supporting plate are housed every same distance above balance supporting plate 7
Equipped with pressure sensor 10 and it is fixed between at the top of the bottom of balance 9 on 7 and supporting plate, is first fixed on test specimen during experiment
On test specimen fixed claw, then fixed claw is placed on balance again.
The present invention's also includes some such architectural features：
Balance used in experiment has 3 branches and each branches end has a time hook conveniently to catch on test specimen.
There is balance supporting plate sawtooth 13 balance supporting plate lower end to be engaged gear.
Display 10 is installed on balance and shows weight.
The present invention Computing Principle be：Assuming that quality is respectively m1, m2, m3 before concrete is immersed in the water, after being immersed in the water
It is respectively n1, n2, n3 to reach test period quality.Then have following：
Reading V1=m1+m2+m3+m hooks pawl-m and floated before concrete sample triplets are immersed in the water
Reading V2=n1+n2+n3+m hooks pawl-m and floated after concrete sample triplets are immersed in the water, because concrete is in water
The volume of middle intrusion does not change so buoyancy will not also produce change.
Then V2-V1=m1+m2+m3- (n1+n2+n3), averaged again for triplets when we typically test, so
We are result required by us with (V2-V1)/3.
During experiment, the processing of test specimen is first carried out, is fixed on device and carries out reading, open the water of the pipeline of water inlet 1 afterwards
Tap, the tap of water inlet 1 is closed when not crossing test specimen bottom, carried out clockwise around gear direction by depth adjustment bar 5
Or rotate counterclockwise and drive gear drive to balance supporting plate to adjust the draft of concrete sample.Reading during off-test
Result of calculation, magnetic valve is opened if test specimen to be stopped and carries out draining.
Concrete sample size is 100 ± 2mm of diameter, is highly 50 ± 2mm.
Test specimen fixed hook pawl is made Fig. 5 shapes in order to consolidate while not preventing concrete lower surface from being contacted with water
Surely concrete sample is lived, the contact area done it thinly and a little reduced with concrete surface wherein hook pawl point is tried one's best, material uses not
Rust steel or lucite, the overall volume for hooking pawl are 110 × 110 × 80mm3, a kind of operating mode is merely just provided
Draining swing arm 1 exposes outside part in discharge water tank, is convenient for people to operate, and material is lucite or stainless steel.
Discharge outlet installs magnetic valve 3 in order to be more convenient the draining of control device.
Installed in the balance supporting plate 7 equipped with 3 balances, when draining swing arm 1 rotates band moving gear be driven again to
Balance supporting plate 7 lifts simultaneously to side balance.
Balance supporting plate 7 should be provided with the lifting of scale conveniently regulating and controlling close to side-walls.
Whole wall box should use pmma material, and conveniently regulating and controlling observes scale when lifting.
The lifting of balance supporting plate sawtooth 13 and engaged gears conveniently regulating and controlling balance supporting plate 7 is arranged at the bottom of balance supporting plate 7.
Pressure sensor 10 is arranged in balance supporting plate and so concrete sample hung on balance 9 just on the downside of balance
Pressure can be allowed to pass on pressure sensor.
Display 11 is provided with balance 9 can facilitate testing crew to carry out reading, record data.
Balance 9 on test specimen meausring apparatus is different from general utility balance, has 120 ° of 3 branches and each branch's angulation.
Claims (3)
1. concrete water absorption rate experimental provision, including housing, balance supporting plate, gear train, balance, it is characterized in that：Pacify in housing
Water-stop sheet is filled, water-stop sheet divides housing 135 into draft regulation room and discharge hydroecium, and gear train is arranged on draft regulation room
In, the gear train include first gear, second gear, the 3rd gear, second gear respectively with first gear and the 3rd gear
It is meshed, balance is installed in fitting depth adjusting rod in first gear, balance supporting plate top, and three are circumferentially uniformly arranged on balance
Test specimen fixed claw, balance supporting plate lower section stretches in draft regulation room and is affixed on water-stop sheet, under balance supporting plate
End set balance supporting plate sawtooth, balance supporting plate sawtooth engage with the 3rd gear, and the lower section of discharge hydroecium offers respectively
Water inlet and discharge outlet, the top of discharge hydroecium communicate with test specimen fixed claw position.
2. concrete water absorption rate experimental provision according to claim 1, it is characterized in that：Balance quantity in balance supporting plate
For 3, pressure sensor is respectively mounted between each balance and balance supporting plate.
3. concrete water absorption rate experimental provision according to claim 1 or 2, it is characterized in that：Described housing has for waterproof
Machine glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610147559.6A CN105588778B (en) | 2016-03-16 | 2016-03-16 | Concrete water absorption rate experimental provision |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610147559.6A CN105588778B (en) | 2016-03-16 | 2016-03-16 | Concrete water absorption rate experimental provision |
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| CN105588778A CN105588778A (en) | 2016-05-18 |
| CN105588778B true CN105588778B (en) | 2018-01-19 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771101B (en) * | 2017-01-16 | 2019-12-27 | 哈尔滨工业大学 | Device and method for testing water absorption coefficient of concrete material |
| CN106769614B (en) * | 2017-01-22 | 2019-05-17 | 长安大学 | A kind of experimental rig and method for assessing surface of aggregate asphalt membrane block-water performance |
| CN113029891B (en) * | 2019-12-24 | 2022-09-20 | 山西大地华基建材科技有限公司 | Demonstration device for water permeability of reaction permeable brick |
Citations (8)
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|---|---|---|---|---|
| JP2003279562A (en) * | 2002-03-25 | 2003-10-02 | Mitsuru Kawamura | Method and apparatus for measuring surface water in sands |
| CN101629889A (en) * | 2009-08-18 | 2010-01-20 | 中国建筑第八工程局有限公司 | Method for measuring pressure water absorption rate of lightweight aggregate concrete |
| CN201903490U (en) * | 2010-09-28 | 2011-07-20 | 广东冠生土木工程技术有限公司 | Test device for determining saturated water absorption performance of bubble mixed light soil |
| CN202372425U (en) * | 2011-12-28 | 2012-08-08 | 葛洲坝集团试验检测有限公司 | Testing device for submerged unit weight |
| CN103471953A (en) * | 2013-09-25 | 2013-12-25 | 哈尔滨工业大学 | Automatic test system and test method for testing surface capillary water absorption of concrete |
| CN204086061U (en) * | 2014-09-17 | 2015-01-07 | 水利部交通运输部国家能源局南京水利科学研究院 | For the analyzer of concrete surface water-intake rate test |
| CN104849168A (en) * | 2015-05-19 | 2015-08-19 | 湖南省交通科学研究院 | Measurement method of water absorption of regenerative coarse aggregates |
| CN104931385A (en) * | 2015-05-19 | 2015-09-23 | 湖南省交通科学研究院 | Method for measuring density and water absorption of regenerated coarse aggregate |
-
2016
- 2016-03-16 CN CN201610147559.6A patent/CN105588778B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003279562A (en) * | 2002-03-25 | 2003-10-02 | Mitsuru Kawamura | Method and apparatus for measuring surface water in sands |
| CN101629889A (en) * | 2009-08-18 | 2010-01-20 | 中国建筑第八工程局有限公司 | Method for measuring pressure water absorption rate of lightweight aggregate concrete |
| CN201903490U (en) * | 2010-09-28 | 2011-07-20 | 广东冠生土木工程技术有限公司 | Test device for determining saturated water absorption performance of bubble mixed light soil |
| CN202372425U (en) * | 2011-12-28 | 2012-08-08 | 葛洲坝集团试验检测有限公司 | Testing device for submerged unit weight |
| CN103471953A (en) * | 2013-09-25 | 2013-12-25 | 哈尔滨工业大学 | Automatic test system and test method for testing surface capillary water absorption of concrete |
| CN204086061U (en) * | 2014-09-17 | 2015-01-07 | 水利部交通运输部国家能源局南京水利科学研究院 | For the analyzer of concrete surface water-intake rate test |
| CN104849168A (en) * | 2015-05-19 | 2015-08-19 | 湖南省交通科学研究院 | Measurement method of water absorption of regenerative coarse aggregates |
| CN104931385A (en) * | 2015-05-19 | 2015-09-23 | 湖南省交通科学研究院 | Method for measuring density and water absorption of regenerated coarse aggregate |
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