CN220729940U - Fluid state solidified soil dry shrinkage characteristic test device - Google Patents
Fluid state solidified soil dry shrinkage characteristic test device Download PDFInfo
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- CN220729940U CN220729940U CN202322403409.5U CN202322403409U CN220729940U CN 220729940 U CN220729940 U CN 220729940U CN 202322403409 U CN202322403409 U CN 202322403409U CN 220729940 U CN220729940 U CN 220729940U
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- solidified soil
- soil sample
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- characteristic test
- jacking
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- 239000002689 soil Substances 0.000 title claims abstract description 70
- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 239000012530 fluid Substances 0.000 title claims abstract description 6
- 238000007493 shaping process Methods 0.000 claims abstract description 19
- 239000011521 glass Substances 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims description 8
- 229940099259 vaseline Drugs 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 9
- 238000001035 drying Methods 0.000 abstract description 4
- 238000005303 weighing Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 4
- 238000004513 sizing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a fluid-state solidified soil dry shrinkage characteristic test device which comprises a shrinkage instrument, a solidified soil sample, a thin glass sheet, a curing box and a shaping die. The mold is shaped, so that the rapid demolding of the sample is realized, and the disturbance to the fluidized solidified soil sample in the demolding process is reduced; the electronic scale is arranged in the curing box, so that the quality of the fluid-state solidified soil sample before and after drying shrinkage can be measured in real time, and disturbance caused by the fact that the sample is required to be moved out of the curing box for many times in the traditional test weighing process is avoided; the bottom of the fluid state solidified soil sample is symmetrically provided with a plurality of strip jacking supports, and balls can freely slide along the sliding grooves of the base under the jacking, so that the external friction in the sample drying and shrinking process is reduced. The method can effectively reduce the disturbance of test operation or external factors to the sample, and effectively improve the accuracy of the measurement data of the dry shrinkage characteristics of the fluid-state solidified soil.
Description
Technical Field
The utility model relates to the field of geotechnical tests, in particular to a dry shrinkage characteristic test device for fluid-state solidified soil.
Background
Because a large amount of water is needed in the mixing process of the fluid-state solidified soil, when the fluid-state solidified soil is practically applied to engineering, after pouring is completed, water potential in the soil body is evaporated outside the soil body structure, the water content of free water among pores in the fluid-state solidified soil material is reduced due to water loss, the fluid-state solidified soil is macroscopically represented by physical shrinkage of the material, and cracks are generated if the shrinkage is too large. For example, when the fluid-state solidified soil is applied to the replacement of the middle partition belt in the expressway widening and reconstruction engineering, the shrinkage is too large, so that the combination of new and old roadbeds is not tight, and the phenomenon of stress concentration is generated under the action of load. It is therefore necessary to carry out an indoor test for its dry shrinkage characteristics. However, in the conventional dry shrinkage characteristic test device, the sample needs to be moved for many times in the process of sample preparation or dry shrinkage maintenance measurement weighing, so that disturbance is inevitably caused, and the accuracy of test data is further affected.
Therefore, in order to avoid the safety problems such as cracking caused by shrinkage of the fluidized bed solidified soil and to improve the accuracy of the dry shrinkage characteristic test data, it is necessary to develop a novel dry shrinkage characteristic test device for the fluidized bed solidified soil.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a fluid-state solidified soil dry shrinkage characteristic test device.
The device for testing the dry shrinkage characteristics of the fluid-state solidified soil comprises a shrinkage tester, a solidified soil sample, a thin glass sheet, a curing box and a shaping die;
two ends of the base of the contractive instrument are provided with side plates, and a dial indicator is detachably fixed on the side plates; a chute is transversely and parallelly arranged along the surface of the base; a jacking is freely slid on the chute; the jacking is symmetrically supported at the bottom of the solidified soil sample in a strip shape;
the thin glass sheets are adhered to two ends of the solidified soil sample;
the shrinkage instrument is arranged on a scale pan in the curing box;
the shaping die comprises a bottom die plate, wherein the protruding parts at the two ends of the bottom die plate are inserted with detachable side die plates through slots; the other two sides of the bottom template are hinged with folding side templates, and the folding side templates and the detachable side templates are fixed through buckles.
Preferably, a plurality of sliding grooves are formed in the base, a plurality of balls positioned in different sliding grooves are buckled below each jacking, and the jacking is perpendicular to the sliding grooves.
Preferably, the solidified soil sample is manufactured by a shaping die, and the solidified soil sample and the shrinkage tester are put on a scale pan of a curing chamber together.
Preferably, the curing box comprises a curing chamber, a scale pan, a pressure sensor, a handle, function keys and an electronic screen; the scale pan and the pressure sensor are arranged in the curing chamber.
Preferably, the function keys of the curing box are used for controlling the temperature in the curing chamber and measuring the quality of the cured soil sample in real time, and the electronic screen is used for reading; the pressure sensor is used for measuring the mass of the solidified soil sample.
Preferably, the shaping mold comprises a bottom template, a folding side template and a detachable side template; the upper corners of the folding side templates are provided with buckle bottoms; the bottom of the detachable side template is provided with a cutting edge, and the upper corners of the detachable side template are symmetrically provided with buckling heads; the detachable side templates and the bottom templates are mutually spliced and fixed through the cutting edge feet and the slots, and the detachable side templates and the folding side templates are mutually buckled and fixed through the buckling heads and the buckling bottoms to form a complete shaping die.
Preferably, the contact surfaces among the solidified soil sample, the jacking, the rolling balls and the sliding grooves are coated with vaseline.
The beneficial effects of the utility model are as follows:
1) According to the utility model, the traditional sample preparation mould is improved, the traditional acrylic mould is improved to be a shaping mould, the mould is detachable and the rapid demoulding of the sample is realized through the structures such as the bottom mould plate, the folding side mould plate and the detachable side mould plate, and the disturbance to the fluid solidified soil sample in the demoulding process is reduced.
2) The electronic scale is arranged in the curing box, so that the quality of the fluid-state cured soil sample before and after drying shrinkage can be measured in real time, parameters such as curing temperature, curing time and sample quality are controlled and displayed through the functional keys and the electronic screen on the surface of the curing box, and disturbance caused by the fact that the sample is required to be moved out of the curing box for many times in the traditional test weighing process is avoided.
3) According to the utility model, 3 strip jacking supports are symmetrically arranged at the bottom of the fluid-state solidified soil sample, balls can freely slide along the base sliding grooves under the jacking, and vaseline is smeared on the contact surface, so that the external friction in the sample drying and shrinking process is reduced.
Drawings
FIG. 1 is a schematic structural view of a sizing die;
FIG. 2 is a schematic view of the structure of a folding sideform and a bottom form in a sizing die;
FIG. 3 is a schematic view of the structure of a removable sideform in a sizing die;
FIG. 4 is a schematic view of the structure of the contractor;
FIG. 5 is a schematic view of the mounting of a solidified soil sample on a shrinkage tester;
FIG. 6 is a section A-A of FIG. 5;
FIG. 7 is a schematic diagram of the overall structure of a fluidized solidified soil dry shrinkage characteristic test device;
in the figure: 1-shrinkage instrument, 101-base, 102-side plate, 103-dial indicator, 104-chute, 105-ball, 106-jacking, 2-solidified soil sample, 3-thin glass sheet, 4-curing box, 401-curing chamber, 402-scale pan, 403-pressure sensor, 404-handle, 405-function key, 406-electronic screen, 5-shaping mold, 501-bottom template, 502-folding side template, 503-detachable side template, 504-slot, 505-buckle bottom, 506-cutting edge, 507-buckle head.
Detailed Description
The utility model is further described below with reference to examples. The following examples are presented only to aid in the understanding of the utility model. It should be noted that it will be apparent to those skilled in the art that modifications can be made to the present utility model without departing from the principles of the utility model, and such modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
As an example, as shown in fig. 1 to 7, a fluidized solidified soil dry shrinkage characteristic test apparatus: comprises a shrinkage tester 1, a solidified soil sample 2, a thin glass sheet 3, a curing box 4 and a shaping mould 5.
The shrinkage instrument 1 comprises a base 101, side plates 102, a dial indicator 103, a sliding chute 104, balls 105 and a jacking 106. The side plates 102 are positioned at two ends of the base 101; the dial indicator 103 is detachably fixed on the side plate 102; the sliding groove 104 is arranged on the surface of the base 101 in parallel along the transverse direction; the ball 105 is buckled below the jacking 106 and can slide freely along the chute 104; the sliding grooves 104 and the jacking seats 106 are symmetrically provided with 3 channels, and 3 balls 105 positioned in different sliding grooves 104 are buckled below each jacking seat 106.
The jacking 106 is symmetrically supported at the bottom of the solidified soil sample 2 in a strip shape, and the jacking 106 and the sliding groove 104 are vertically and spatially distributed. The contact surfaces among the solidified soil sample 2, the jacking 106, the rolling balls 105 and the sliding grooves 104 are coated with vaseline.
The thin glass sheets 3 are adhered to both ends of the solidified soil sample 2.
The curing box 4 comprises a curing chamber 401, a scale pan 402, a pressure sensor 403, a handle 404, function keys 405 and an electronic screen 406; the scale 402 and the pressure sensor 403 are disposed inside the curing chamber 401. The function keys 405 of the curing box 4 can control the temperature in the curing chamber 401 and measure the quality of the cured soil sample 2 in real time and read through the electronic screen 406; the mass of the solidified soil sample 2 is measured by the pressure sensor 403.
The solidified soil sample 2 is manufactured by a shaping mold 5, and the solidified soil sample 2 and the shrinkage tester 1 are put on a scale 402 of a curing chamber 401.
The shaping mold 5 comprises a bottom template 501, a folding side template 502 and a detachable side template 503; the protruding parts at the two ends of the bottom template 501 are provided with slots 504; the folding side templates 502 are hinged to two sides of the bottom template 501, and the upper corners of the folding side templates 502 are provided with buckle bottoms 505; the bottom of the detachable side template 503 is provided with a cutting edge 506, and the upper corners are symmetrically provided with snap-on heads 507.
The detachable side templates 503 and the bottom templates 501 are mutually spliced with the slots 504 through the cutting pins 506, and the detachable side templates 503 and the folding side templates 502 are mutually buckled with the buckle bottoms 505 through the buckle heads 507 to realize fixation, so that the complete shaping die 5 is formed.
As shown in fig. 1, 2 and 3, when the device of the utility model is used for testing, the sample preparation of the fluid solidified soil is needed. During sample preparation, the folding side template 502 is kept upright, the detachable side template 503 is vertically inserted into the slot 504 of the bottom template 501 through the cutting edge 506, and the detachable side template 503 and the folding side template 502 are mutually buckled and connected through the buckling head 506 and the buckling bottom 505 to form the complete shaping mold 5. And then uniformly coating a layer of thin vaseline on the inner wall of the shaping mould 5, pouring fluidized solidified soil, and demoulding after 24 hours.
During demolding, the buckling head 506 is separated from the buckling bottom 505, the detachable side template 503 is slowly pulled out of the slot 504 of the bottom template 501, the foldable side template 502 is separated from the solidified soil sample 2, and the initial size of the solidified soil sample 2 is measured and recorded.
As shown in fig. 4, 5 and 6, a thin layer of vaseline is uniformly coated on the surfaces of the jacking 106, the rolling balls 105 and the sliding grooves 104 of the shrinkage apparatus 1, and the net mass of the shrinkage apparatus 1 is measured. Moving the solidified soil sample 2 to 3 jacking 106 of the shrinkage instrument 1; and a layer of thin glass sheets 3 are respectively stuck at two ends of the solidified soil sample 2, the telescopic length of a measuring rod of the dial indicator 103 is adjusted to enable the measuring head to be propped against the thin glass sheets 3, after enough measuring range is reserved, the dial indicator 103 is fastened on the side plate 102 of the shrinkage instrument 1, and the reading is zeroed.
As shown in fig. 7, the solidified soil sample 2 is placed on a scale 402 of a curing chamber 401 together with a shrinkage tester 1, and the mass of the solidified soil sample 2 and the mass of the shrinkage tester 1 are measured, and the initial mass of the solidified soil sample 2 is calculated. After setting parameters such as curing time and curing temperature by the function key 405, the curing box 4 is started. The readings of the dial indicator 103 and the mass of the solidified soil sample 2 are recorded periodically by the electronic screen 406 according to the test requirements. And finally, calculating parameters such as the water loss rate, the dry shrinkage strain, the dry shrinkage coefficient and the like of the solidified soil sample according to the test data, and analyzing the dry shrinkage characteristics of the fluidized solidified soil.
Claims (7)
1. A fluid state solidified soil dry shrinkage characteristic test device is characterized in that: comprises a shrinkage instrument (1), a solidified soil sample (2), a thin glass sheet (3), a curing box (4) and a shaping mould (5);
two ends of a base (101) of the shrinkage instrument (1) are provided with side plates (102), and a dial indicator (103) is detachably fixed on the side plates (102); a chute (104) is transversely and parallelly arranged along the surface of the base (101); a jacking (106) is freely slid on the sliding chute (104); the jacking (106) is symmetrically supported at the bottom of the solidified soil sample (2) in a strip shape;
the thin glass sheets (3) are adhered to two ends of the solidified soil sample (2);
the shrinkage instrument (1) is arranged on a scale pan (402) in the curing box (4);
the shaping die (5) comprises a bottom die plate (501), wherein the protruding parts at the two ends of the bottom die plate (501) are inserted with detachable side die plates (503) through slots (504); the other two sides of the bottom template (501) are hinged with folding side templates (502), and the folding side templates (502) and the detachable side templates (503) are fixed through buckles.
2. The fluidized solidified soil dry shrinkage characteristic test apparatus according to claim 1, wherein: a plurality of sliding grooves (104) are formed in the base (101), a plurality of balls (105) positioned in different sliding grooves (104) are buckled below each jacking (106), and the jacking (106) is perpendicular to the sliding grooves (104).
3. The fluidized solidified soil dry shrinkage characteristic test apparatus according to claim 1, wherein: the solidified soil sample (2) is manufactured by a shaping die (5), and the solidified soil sample (2) and the shrinkage instrument (1) are put on a scale pan (402) of a curing chamber (401).
4. The fluidized solidified soil dry shrinkage characteristic test apparatus according to claim 1, wherein: the curing box (4) comprises a curing room (401), a scale pan (402), a pressure sensor (403), a handle (404), function keys (405) and an electronic screen (406); the scale pan (402) and the pressure sensor (403) are arranged in the curing chamber (401).
5. The fluidized bed soil dry shrinkage characteristic test apparatus according to claim 4, wherein: the function keys (405) of the curing box (4) are used for controlling the temperature in the curing chamber (401) and measuring the quality of the cured soil sample (2) in real time, and the electronic screen (406) is used for reading; the pressure sensor (403) is used for measuring the mass of the solidified soil sample (2).
6. The fluidized solidified soil dry shrinkage characteristic test apparatus according to claim 1, wherein: the shaping die (5) comprises a bottom die plate (501), a folding side die plate (502) and a detachable side die plate (503); the upper corners of the folding side templates (502) are provided with buckle bottoms (505); the bottom of the detachable side template (503) is provided with a cutting edge (506), and the upper corners are symmetrically provided with buckling heads (507); the detachable side template (503) and the bottom template (501) are mutually spliced and fixed through the cutting edge (506) and the slot (504), and the detachable side template (503) and the folding side template (502) are mutually buckled and fixed through the buckling head (507) and the buckling bottom (505) to form a complete shaping die (5).
7. The fluidized solidified soil dry shrinkage characteristic test apparatus according to claim 1, wherein: vaseline is smeared on contact surfaces among the solidified soil sample (2), the jacking (106), the rolling balls (105) and the sliding grooves (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322403409.5U CN220729940U (en) | 2023-09-04 | 2023-09-04 | Fluid state solidified soil dry shrinkage characteristic test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322403409.5U CN220729940U (en) | 2023-09-04 | 2023-09-04 | Fluid state solidified soil dry shrinkage characteristic test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220729940U true CN220729940U (en) | 2024-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322403409.5U Active CN220729940U (en) | 2023-09-04 | 2023-09-04 | Fluid state solidified soil dry shrinkage characteristic test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220729940U (en) |
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2023
- 2023-09-04 CN CN202322403409.5U patent/CN220729940U/en active Active
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