CN214278155U - Sample deformation testing arrangement that absorbs water - Google Patents
Sample deformation testing arrangement that absorbs water Download PDFInfo
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- CN214278155U CN214278155U CN202022895891.5U CN202022895891U CN214278155U CN 214278155 U CN214278155 U CN 214278155U CN 202022895891 U CN202022895891 U CN 202022895891U CN 214278155 U CN214278155 U CN 214278155U
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Abstract
The utility model discloses a sample deformation testing arrangement that absorbs water. The device comprises a test box, wherein a boss is arranged at the bottom in the test box, a water outlet is arranged on the side wall of the bottom of the test box, and the horizontal position of the water outlet is higher than the reasonable distance of the upper surface of the boss. The utility model discloses can be simultaneously, real-time measurement sample absorb water or/and load down the capillary water absorption rate and the expansion ratio of deformation in-process. And the device further can integrate relevant sensor, can realize automatic collection and control in data transmission to the computer, promote the convenience of test process.
Description
Technical Field
The utility model relates to an engineering, ground test piece testing technique, concretely relates to test piece deformation testing arrangement that absorbs water.
Background
In the fields of building materials, tunnel excavation, side slope excavation and the like, the characteristics of water absorption deformation of a test piece, such as the water absorption and the expansibility of gypsum rock, loess, red clay and the like, need to be researched and observed. But there is currently no device that is capable of performing the relevant performance tests.
Disclosure of Invention
To prior art's defect or not enough, the utility model provides a test piece deformation testing arrangement that absorbs water.
Therefore, the utility model provides a test piece deformation testing arrangement that absorbs water includes the test box, the bottom is equipped with the boss in the test box, test box bottom lateral wall is equipped with the delivery port, delivery port place horizontal position is higher than reasonable distance of boss upper surface.
Furthermore, a water outlet is formed in the side wall of the bottom of the test box, a water supply cavity is reserved between the side wall of the water outlet and the boss in a non-contact mode, a partition plate is arranged in the water supply cavity, a water passing opening is reserved between the partition plate and the bottom of the test box, and the horizontal position of the water outlet is lower than the upper surface of the boss.
Further, the utility model discloses a test piece deformation testing arrangement that absorbs water still includes the permeable stone, and this permeable stone sets up on the boss, delivery port place horizontal position and permeable stone upper surface are in same horizontal position.
Furthermore, filter paper is paved on the permeable stone.
Furthermore, a water container is arranged in the test box close to the upper part, the bottom of the water container is provided with an outlet, the outlet is provided with a water outlet valve, and the outlet deviates from the lug boss in the horizontal direction.
Further, the protective film is used for wrapping the outer surface of the to-be-tested piece.
The water collecting device comprises a water collecting container and a weighing device, wherein the water collecting container is positioned on the weighing device and is positioned at the water outlet and used for collecting water discharged from the water outlet.
Furthermore, a pressure applying device is arranged above the test box and is positioned above the boss.
Optionally, the pressing device includes a fixing rod, a pressing rod, a lever and a counterweight device; the fixed rod is arranged at the top in the test box, and the counterweight device passes through
The profile strut is movably mounted on the fixed rod, and
one end of the profile pole support extends to the reverse side of the configuration device, and the extending end is movably connected with a pressure applying rod; one end of the lever is movably arranged at the bottom end of the fixed rod, the other end of the lever is provided with a structure for hanging weights, and when the other end of the lever is free of weights, the balance state is formed between the balance weight device and the lever.
Furthermore, a third measuring instrument and at least one group of measuring instruments are arranged in the test box and positioned on or above the boss, the horizontal position of the third measuring instrument is higher than the horizontal position of the at least one group of measuring instruments, a to-be-tested part is placed between the third measuring instrument and the at least one group of measuring instruments, and each group of measuring instruments is composed of two measuring instruments which are oppositely positioned on two sides of the to-be-tested part placing position.
Compared with the prior art, the utility model, following beneficial effect has:
(1) the utility model discloses can be simultaneously, real-time measurement sample absorb water or/and load down the capillary water absorption rate and the expansion ratio of deformation in-process.
(2) The utility model discloses a device further can integrate relevant sensor, can realize automatic collection and control with data transmission to the computer, promotes the convenience of testing process.
Drawings
FIG. 1 is a schematic view of a water absorption and expansion device for a test sample under load;
fig. 2 is a top view of the arrangement of the displacement measuring devices around the test piece.
Detailed Description
Unless otherwise defined, the terminology herein is to be understood in accordance with the conventional understanding of one of ordinary skill in the art to which the invention pertains.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "relative", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "provided", "mounted", "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model discloses the determinand of reasonable distance is according to the high certainty of the water level that the test needs, ensures to be soaked in reasonable water level by the test piece when the test, or not soaked by water. Furthermore, a permeable stone can be additionally arranged on the lug boss for reasonable adjustment.
Research test piece is observed for material, the component in fields such as building, tunnel, highway, ground to the test piece, and its shape generally is the cylinder, including but not limited to cylinder, cube etc..
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example (b):
this embodiment provides a concrete test piece deformation testing arrangement that absorbs water, it is shown with reference to fig. 1-2, and it is by test box 14, establish boss 9 in the test box 14, and the boss is close to a test box lateral wall, has seted up delivery port 20 on this lateral wall, and this delivery port is higher than the upper surface of boss, has placed permeable stone 10 on the boss simultaneously, and the position is waited to test the piece and is placed the position above the permeable stone, and permeable stone's effect is the homogeneity that better realizes the test piece and absorb moisture process.
Furthermore, a water outlet 5 is formed in the bottom of the opposite side wall of the side wall where the water outlet is located, the horizontal position of the water outlet is lower than the upper surface of the boss, and water remained in the test box can be discharged through the water outlet after the experiment is finished; and a water supply cavity 1 is reserved between the side wall of the water outlet 5 and the boss 9 without contacting, a partition plate is arranged in the water supply cavity, and a water passing opening 7 is reserved between the partition plate and the bottom of the test box to continuously supply water for the water absorption process of the test piece.
Furthermore, a water container 2 is arranged in the test box or the water supply cavity, an outlet 4 is arranged at the bottom of the water container, a water outlet valve 3 is arranged at the outlet, and the outlet 4 deviates from the position of the permeable stone in the horizontal direction, such as being close to the side wall of the test box, so as to ensure that the water added during the water supply in the experimental process is not directly contacted with the test piece. Wherein the outlet valve is used for adding water in a controlled manner, such as dropwise, during the measurement process.
In order to facilitate the direct observation of the deformation of the test piece during the test, a corresponding measuring instrument such as a dial indicator is arranged in the test box 15, and specifically, the measuring instrument comprises axial and radial measuring instruments for observing the axial or radial dimensional change of the test piece. The measuring instruments (19-1) in the axial direction are higher than the measuring instruments (19-2) in the radial direction, and the measuring instruments in the radial direction are arranged in pairs, and at least one pair and one group of measuring instruments are respectively positioned at two sides of the to-be-tested piece. Two sets or pairs (as shown in fig. 2) are also possible to more accurately monitor the radial dimensional deformation of the test piece. As a further alternative, each test meter may be mounted in place in the test chamber by mounting posts (18-1, 18-2).
In a further scheme, a protective film 13 such as a rubber mold can be coated on the outer side of the test piece, so that the loss of moisture and the direct contact with air in the water absorption process of the test piece are avoided, and the measurement accuracy is ensured.
In still other embodiments, the filter paper 11 is laid on the permeable stone to prevent the sample from absorbing water unevenly to cause inaccurate experimental data.
On the basis of the scheme, a water collecting container 21 and a weighing device 22 such as an electronic balance can be arranged at a water outlet outside the test box so as to calculate and monitor the water absorption capacity of the test piece in the test process.
In a further scheme, on the basis of above-mentioned scheme, set up pressure device in the test box, general pressure device all is applicable to the utility model discloses. Pressure applying deviceMainly comprises a fixing rod 26, a pressure applying rod 25, a lever 16, a weight 17 and a counterweight device 24; the fixing rod 24 is installed at the top in the test box, and the counterweight device 24 passes through
The profile struts are movably mounted (e.g. by rolling bearings) on the fixed rods 26, and
one end of the profile pole support extends to the reverse side of the configuration device, and a pressure applying rod 25 is movably connected on the profile pole support; one end of the lever 16 is movably (such as by a rolling bearing) arranged at the bottom end of the fixed rod 26, and the other end is provided with a structure for hanging the weight 17; the pressure applying rod 25 is axially/vertically arranged and is movably connected with the lever 16, and the bottom of the pressure applying device is provided with a pressure transmitting plate 15, and the shape of the pressure transmitting plate is matched with that of the test piece. When the other end of the lever 16 has no weight, the balance state is formed between the counterweight device 24 and the lever 16, namely the lever is kept in a horizontal state, at the moment, the pressure rod 25 does not exert pressure on the sample, and the fixed rod 26 bears the lever; when a different number of weights 17 are added to the other end of the lever, this static balance is lost, resulting in a different pressure on the sample, and the pressure bar applies pressure to the test piece.
To ensure the level of the device, the bottom of the test chamber may be provided with a leveling base 16 and a level 23. Before testing, the leveling base 16 can be adjusted, and the test box can be adjusted to be in a horizontal state by observing the level gauge 23.
The device is adopted to change the water absorption and expansion rules of the gypsum rock in the deformation process.
Firstly, preparing regular cylindrical samples from gypsum rock, sleeving the regular cylindrical samples into a rubber film, placing the rubber film in the device, applying different vertical pressures to the samples by adding different numbers of standard weights, starting to supply water to the device after the weights are added, and reading the mass of water sucked in the deformation process of the samples by using an electronic balance; the change of the horizontal displacement and the vertical displacement of the sample after absorbing water in the deformation process can be read according to the radial dial indicator and the axial dial indicator. The method comprises the following specific steps:
(1) the test box is placed on the horizontal working platform, so that the uniform and sufficient water absorption effect of the test piece during test is ensured, and meanwhile, the smooth water drainage in the test process is also ensured;
(2) placing the permeable stone 10 on the lug boss, then uniformly and slowly filling water into the water container 1, wherein the water in the water container 1 enters the test box 14 through the outlet 7, and the water filling is stopped when the liquid level in the test box 14 just submerges the top end of the permeable stone 10;
(3) a water collecting bottle 21 and a weighing device 22 are arranged at the water outlet 20;
(4) selectively placing or not placing the filter paper 11, then placing the prepared to-be-tested piece 12 on the permeable stone 10, and then wrapping the rubber membrane 13 on the surface of the test piece 12; then, the pressurizing plate 15 is placed on the sample 12, and the bottom end of the pressurizing plate 15 can be wrapped in the rubber film 13 to ensure sufficient implementation;
a certain load is quickly applied according to the test requirements, the water outlet valve 3 is opened, so that the water in the water container 2 continuously enters the test box 1, meanwhile, the drain pipe 20 in the water suction chamber 14 can quickly discharge the redundant water to the water collecting bottle 21, and the liquid level of the test box 14 is ensured to be kept unchanged all the time;
at the moment, the water absorption amount of the test piece 12 is the difference value between the water amount flowing out of the water container 2 and the added mass in the water collecting bottle 21, and the water absorption mass and the water absorption rate of the test piece can be measured in real time according to the difference value; the dial gauges 19-1 and 19-2 measure the radial and axial changes of the sample in real time, and further the expansion amount and the expansion rate of the sample can be obtained;
the swelling capacity is the volume change of the sample in the water absorption process, and the specific formula is as follows:
Δv＝v2-v1
wherein, Deltav is the volume change of the sample after absorbing water; v. of1The volume of the sample when it is not absorbing water; v. of2The volume of the sample after water absorption;
the expansion rate is the ratio of the volume change of the sample to the volume of the sample which does not absorb water in the water absorption process of the sample, and the specific formula is as follows:
wherein δ is the expansion ratio of the sample, and the other symbols have the same meanings as above;
(5) when the difference between the outflow amount of the water container 2 and the increase amount in the water collecting bottle 21 is less than 0.001g in 24 continuous hours, it is considered that the capillary water absorption of the sample is completed, and at this time, the flow control valve 3 is closed, the load is removed, the test piece 12 is taken out, and the drain valve 5 is opened to completely drain the water in the apparatus.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (8)
1. A test device for water absorption deformation of a sample is characterized by comprising a test box, wherein a boss is arranged at the bottom in the test box, a water outlet is arranged on the side wall of the bottom of the test box, and the horizontal position of the water outlet is higher than the reasonable distance from the upper surface of the boss;
a water outlet is formed in the side wall of the bottom of the test box, a water supply cavity is reserved between the side wall of the water outlet and the boss in a non-contact mode, a partition plate is arranged in the water supply cavity, a water passing opening is reserved between the partition plate and the bottom of the test box, and the horizontal position of the water outlet is lower than the upper surface of the boss; still include the permeable stone, this permeable stone sets up on the boss, delivery port place horizontal position and permeable stone upper surface are in same horizontal position.
2. The apparatus for testing water absorption deformation of a test specimen according to claim 1, wherein the permeable stone is coated with filter paper.
3. The apparatus for testing water absorption deformation of a test specimen according to claim 1, wherein a water container is provided in the upper part of the test box, an outlet is provided at the bottom of the water container, a water outlet valve is provided at the outlet, and the outlet is deviated from the boss in the horizontal direction.
4. The apparatus for testing water absorption deformation of a test specimen according to claim 1, further comprising a protective film for wrapping the outer surface of the test specimen.
5. The apparatus for testing water absorption deformation of a test specimen according to claim 1, further comprising a water collection container and a weighing device, wherein the water collection container is positioned on the weighing device, and the water collection container is positioned at the water outlet and is used for collecting water discharged from the water outlet.
6. The apparatus for testing water absorption deformation of a test specimen according to claim 1, wherein a pressing means is provided above the test box, and the pressing means is located above the boss.
7. The test sample water absorption deformation test device according to claim 6, wherein the pressure applying device comprises a fixing rod, a pressure applying rod, a lever and a weight device; the fixed rod is arranged at the top in the test box, and the counterweight device passes through
The profile strut is movably mounted on the fixed rod, and
one end of the profile pole support extends to the reverse side of the configuration device, and the extending end is movably connected with a pressure applying rod; one end of the lever is movably arranged at the bottom end of the fixed rod, the other end of the lever is provided with a structure for hanging weights, and when the other end of the lever is free of weights, the balance state is formed between the balance weight device and the lever.
8. The test sample water absorption deformation test device as claimed in claim 1, wherein a third measuring instrument and at least one group of measuring instruments are arranged in the test box and on or above the boss, the horizontal position of the third measuring instrument is higher than the horizontal position of the at least one group of measuring instruments, a to-be-tested part is placed between the third measuring instrument and the at least one group of measuring instruments, and each group of measuring instruments is composed of two measuring instruments which are oppositely arranged on two sides of the to-be-tested part.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022895891.5U CN214278155U (en) | 2020-12-02 | 2020-12-02 | Sample deformation testing arrangement that absorbs water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022895891.5U CN214278155U (en) | 2020-12-02 | 2020-12-02 | Sample deformation testing arrangement that absorbs water |
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| CN214278155U true CN214278155U (en) | 2021-09-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116879105A (en) * | 2023-09-08 | 2023-10-13 | 云南绅博源生物科技有限公司 | Water retention detection method and device for preparing cigarette filter material |
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2020
- 2020-12-02 CN CN202022895891.5U patent/CN214278155U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116879105A (en) * | 2023-09-08 | 2023-10-13 | 云南绅博源生物科技有限公司 | Water retention detection method and device for preparing cigarette filter material |
| CN116879105B (en) * | 2023-09-08 | 2023-11-14 | 云南绅博源生物科技有限公司 | Water retention detection method and device for preparing cigarette filter material |
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