CN210322707U - Device for improving porous concrete permeability coefficient measurement accuracy - Google Patents
Device for improving porous concrete permeability coefficient measurement accuracy Download PDFInfo
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- CN210322707U CN210322707U CN201920633515.3U CN201920633515U CN210322707U CN 210322707 U CN210322707 U CN 210322707U CN 201920633515 U CN201920633515 U CN 201920633515U CN 210322707 U CN210322707 U CN 210322707U
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- glass sleeve
- porous concrete
- permeability coefficient
- water
- measurement accuracy
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Abstract
The utility model provides an improve porous concrete osmotic coefficient measurement accuracy's device, including water storage container, rubber hose, lower part glass sleeve, middle glass sleeve, upper portion glass sleeve, flange joint, take graduated beaker, porous concrete test piece. The water storage container and the lower glass sleeve are connected through a rubber hose. The lower glass sleeve and the middle glass sleeve are connected through flange joints. The beaker is placed at the position of a water gap of the lower glass sleeve. The porous concrete test piece is arranged in the middle glass sleeve.
Description
Technical Field
The utility model relates to a porous concrete work performance, concretely relates to improve porous concrete osmotic coefficient measurement accuracy's device.
Background
The permeability coefficient is an important index for measuring the working performance of the porous concrete. The permeability coefficient measuring device directly places a porous concrete test piece in the sleeve according to Darcy's law, measures parameters such as water flow velocity and head loss in the test piece, and calculates to obtain the permeability coefficient. The existing measurement system assumes that a test piece is in close contact with the inner wall of a sleeve, the contact surface of the test piece and the sleeve is not effectively treated, and the condition that the permeability coefficient is larger due to water leakage of the contact surface is not considered. Because the surface of the porous concrete test piece formed by pouring the model is provided with the opening cavity formed by more coarse aggregates, the side wall water flow leakage is easier to form in the measuring process, and the measuring deviation is particularly obvious.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an improve porous concrete osmotic coefficient measurement accuracy's device to solve the problem that exists among the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the device for improving the measurement precision of the permeability coefficient of the porous concrete comprises a water storage container, a rubber hose, a lower glass sleeve, an intermediate glass sleeve, an upper glass sleeve, a flange joint, a beaker with scales and a porous concrete test piece, wherein the water storage container is connected with the lower glass sleeve through the rubber hose, the lower glass sleeve is connected with the intermediate glass sleeve, the intermediate glass sleeve is connected with the upper glass sleeve through the flange joint, the beaker is placed at the position of a water port of the lower glass sleeve, and the porous concrete test piece is placed in the intermediate glass sleeve.
Furthermore, the lowest water level in the water storage container is higher than the height of the water outlet on the upper glass sleeve.
Furthermore, the rubber hose is a detachable device, a valve is arranged at the end part of the hose, when the water storage container enters water into the lower glass sleeve, the hose is connected, the valve is opened, when the lower glass sleeve leaves water, the valve is closed, and the hose is detached.
Furthermore, the lower glass sleeve is a non-top cylindrical container, and a horizontal water gap is formed in the side wall of the container and can be conveniently connected with a rubber hose.
Furthermore, middle glass sleeve is the cylindrical container of no top no end, divide into left side semicircle post, right side semicircle post, cuff and screw, and cuff and screw are with left side semicircle post and right side semicircle post zonulae occludens, the rubber pad of 2mm thickness is fixed to middle glass sleeve inner wall.
Furthermore, the upper glass sleeve is a bottomless cylindrical container, and a horizontal water outlet is formed in the side wall of the container, so that the initially measured water head height is constant.
Furthermore, Vaseline with a certain thickness is uniformly coated on the surface of the porous concrete test piece until the surface of the test piece is smooth.
Compared with the prior art, the invention has the beneficial effects that:
1. vaseline is smeared on the side face of the porous concrete test piece, so that an opening pore generated by protruding aggregate is effectively blocked, and a measurement error caused by water flow outside the test piece is reduced.
2. The porous concrete permeability coefficient measuring device is improved, the sealing of the contact surface of a test piece and a sleeve is enhanced by adding the rubber pad, and the measuring error caused by the water leakage of the side wall is reduced.
Drawings
Fig. 1 is the utility model discloses an improve porous concrete permeability coefficient measurement accuracy's device schematic diagram.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Referring to fig. 1, the utility model relates to an improve porous concrete osmotic coefficient measurement accuracy's device, including water storage container, rubber hose, lower part glass sleeve, middle glass sleeve, upper portion glass sleeve, flange joint, take the beaker of scale, porous concrete test piece. The water storage container and the lower glass sleeve are connected through a rubber hose. The lower glass sleeve and the middle glass sleeve are connected through flange joints. The beaker is placed at the position of a water gap of the lower glass sleeve.
In the examples:
1. and uniformly coating vaseline with a certain thickness on the periphery of the test piece until the surface of the test piece is smooth. The test piece is fixed in the middle glass sleeve, and the semi-cylinders on the two sides are reliably connected through the hoop and the screw. The upper sleeve and the lower sleeve are respectively connected with the middle glass sleeve by flanges.
2. The rubber hose is connected with the water outlet of the water storage container and the horizontal water port of the lower glass sleeve.
3. The water storage container stores enough water (a tap water pipe can be connected), and a valve on the rubber hose is opened. Continuously injecting water into the sleeve to the horizontal water outlet of the upper sleeve.
4. The hose is dismantled, and the horizontal water gap of the lower sleeve starts to discharge water.
Claims (7)
1. The device for improving the measurement accuracy of the permeability coefficient of the porous concrete comprises a water storage container (1), a rubber hose (2), a lower glass sleeve (3), a middle glass sleeve (4), an upper glass sleeve (5), a flange joint (6), a beaker (7) and a porous concrete test piece (8), and is characterized in that the water storage container (1) and the lower glass sleeve (3) are connected through the rubber hose (2), the lower glass sleeve (3) and the middle glass sleeve (4) are connected through the flange joint (6), the middle glass sleeve (4) and the upper glass sleeve (5) are connected through the flange joint (6), the beaker (7) is placed at the water gap position of the lower glass sleeve (3), and the porous concrete test piece (8) is placed in the middle glass sleeve (4).
2. The apparatus for improving the accuracy of the measurement of the permeability coefficient of porous concrete according to claim 1, wherein the lowest water level in the water storage container (1) is higher than the height of the water outlet on the upper glass sleeve (5).
3. The device for improving the measurement accuracy of the permeability coefficient of porous concrete according to claim 1, wherein the rubber hose (2) is a detachable device, a valve (2 a) is arranged at the end part of the hose, when water enters the water storage container (1) into the lower glass sleeve (3), the hose is connected, the valve (2 a) is opened, when water exits from the lower glass sleeve (3), the valve (2 a) is closed, and the hose is detached.
4. The device for improving the measurement accuracy of the permeability coefficient of porous concrete according to claim 1, wherein the lower glass sleeve (3) is a non-top cylindrical container, and a horizontal water gap is arranged on the side wall of the container, so that the rubber hose (2) can be conveniently connected.
5. The device for improving the measurement accuracy of the permeability coefficient of porous concrete according to claim 1, wherein the middle glass sleeve (4) is a non-top and non-bottom cylindrical container and comprises a left half cylinder (4 a), a right half cylinder (4 b), a hoop and a screw (4 c), the hoop and the screw (4 c) tightly connect the left half cylinder (4 a) and the right half cylinder (4 b), and a rubber pad (4 d) with the thickness of 2mm is fixed on the inner wall of the middle glass sleeve (4).
6. The device for improving the measurement accuracy of the permeability coefficient of porous concrete according to claim 1, wherein the upper glass sleeve (5) is a bottomless cylindrical container, and a horizontal water outlet is arranged on the side wall of the container to ensure that the initially measured water head height is a constant value.
7. The device for improving the measurement accuracy of the permeability coefficient of the porous concrete according to claim 1, wherein vaseline with a certain thickness is uniformly coated on the surface of the porous concrete sample (8) until the surface of the sample is smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920633515.3U CN210322707U (en) | 2019-05-06 | 2019-05-06 | Device for improving porous concrete permeability coefficient measurement accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920633515.3U CN210322707U (en) | 2019-05-06 | 2019-05-06 | Device for improving porous concrete permeability coefficient measurement accuracy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210322707U true CN210322707U (en) | 2020-04-14 |
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ID=70137637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920633515.3U Active CN210322707U (en) | 2019-05-06 | 2019-05-06 | Device for improving porous concrete permeability coefficient measurement accuracy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210322707U (en) |
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2019
- 2019-05-06 CN CN201920633515.3U patent/CN210322707U/en active Active
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