CN217277709U - Non-aqueous reaction high polymer grouting material anti-permeability performance testing device - Google Patents
Non-aqueous reaction high polymer grouting material anti-permeability performance testing device Download PDFInfo
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- CN217277709U CN217277709U CN202220269208.3U CN202220269208U CN217277709U CN 217277709 U CN217277709 U CN 217277709U CN 202220269208 U CN202220269208 U CN 202220269208U CN 217277709 U CN217277709 U CN 217277709U
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Abstract
The utility model provides a non-aqueous reaction high polymer grouting material impermeability test device, which comprises a test component, a base and a transparent cover hermetically connected with the base, wherein a hollow column is arranged at the middle position of the base, and the hollow column is an inner cavity with an opening at the top; the testing assembly comprises an upper pressing plate and a lower pressing plate, hollow grooves are formed in the upper pressing plate and the lower pressing plate, the upper pressing plate and the lower pressing plate are detachably connected through a connecting assembly, an accommodating space is formed between the upper pressing plate and the lower pressing plate and used for clamping a high polymer test piece, the lower pressing plate is arranged above the hollow column, so that the hollow grooves of the lower pressing plate are aligned to the hollow column, a sealing element is arranged between the hollow column and the lower pressing plate, an air inlet pipeline is connected to the transparent cover, and a water inlet pipeline communicated with the inner cavity of the hollow column is connected to the base; the device enables the high polymer test piece to be under the effect of axial pressure, confining pressure and osmotic pressure simultaneously to experimental and acquisition high polymer test piece is at the impervious performance of various different conditions.
Description
Technical Field
The utility model relates to a non-aqueous reaction high polymer slip casting material impermeability test technical field especially relates to a non-aqueous reaction high polymer slip casting material impermeability test device.
Background
The double-component non-aqueous reaction high polymer is a novel grouting material, is widely applied in the fields of seepage prevention reinforcement of roadbeds, airport pavements and dams, seepage prevention and seepage isolation of landfill leachate and the like in recent years, and the seepage prevention performance of the double-component non-aqueous reaction high polymer is an important index. At present, because the impermeability test of the high polymer grouting material has no current standard, the existing research mostly refers to the test method of hydraulic concrete to research the impermeability of the high polymer grouting material. However, because the high polymer grouting material is often used as an impervious body under the combined action of axial pressure and confining pressure, and a general concrete impermeability test device lacks the function of testing the impermeability of a test piece under the combined action of axial pressure and confining pressure, which greatly restricts the research progress of related researchers on the impermeability mechanism of the high polymer grouting material, a novel permeability test device suitable for impermeability test of a non-aqueous reaction high polymer grouting material and a use method thereof are urgently needed, so that the further development of the high polymer impermeability technology is promoted.
SUMMERY OF THE UTILITY MODEL
The utility model provides a non-aqueous reaction high polymer grouting material impermeability test device aims at solving the problem that current non-aqueous reaction high polymer grouting material impermeability test equipment lacks the impermeability of test high polymer test piece under the condition of axial pressure and confined pressure effect.
In order to achieve the above object, the utility model provides a non-water reaction polymer grouting material impermeability test device, include: the testing device comprises a testing component, a base and a transparent cover hermetically connected with the base, wherein a hollow column is arranged in the middle of the base, and the top of the hollow column is provided with an open inner cavity; the testing assembly comprises an upper pressing plate and a lower pressing plate, hollow grooves are formed in the upper pressing plate and the lower pressing plate, and the upper pressing plate and the lower pressing plate are detachably connected through a connecting assembly; an accommodating space is formed between the upper pressing plate and the lower pressing plate and used for clamping a high polymer test piece, the lower pressing plate is arranged above the hollow column so that the hollow groove of the lower pressing plate is aligned with the hollow column, and a sealing element is arranged between the hollow column and the lower pressing plate; an air inlet pipeline is connected to the transparent cover, and a water inlet pipeline communicated with the inner cavity of the hollow column is connected to the base.
Preferably, coupling assembling includes screw rod and retaining member, the top board with the holding down plate is through a plurality of the connection can be dismantled to the screw rod, the top board with holding down plate parallel arrangement, the top board with the holding down plate is located through the cover retaining member on the screw rod is fixed the high polymer test piece, the screw rod pass through the threaded sleeve with the double-screw bolt of base is connected.
Preferably, the hollow-out grooves of the upper pressing plate correspond to the hollow-out grooves of the lower pressing plate in position, and the plurality of groups of hollow-out grooves are annularly and equidistantly distributed.
Preferably, the inner diameter of the hollow column is consistent with that of the outermost hollow groove.
Preferably, the upper pressure plate is provided with a groove, and the groove is used for positioning the high polymer test piece.
Preferably, the surfaces of the upper pressure plate and the lower pressure plate, which are used for being in contact with the high polymer test piece, are respectively provided with a water permeable plate.
Preferably, the test assembly further comprises a latex film, and the latex film is used for being arranged on the side face of the high polymer test piece.
Preferably, the transparent cover is provided with an exhaust hole, the air inlet pipeline is used for being connected with an air pump, a barometer is arranged on the air inlet pipeline, the water inlet pipeline is used for being connected with a water pump, and a hydraulic pressure meter is arranged on the water inlet pipeline.
Preferably, the bottom of the base is provided with a supporting seat.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect:
firstly, the following steps: the utility model provides a non-aqueous reaction high polymer grouting material impermeability test device through set up test assembly, base and with base sealing connection's translucent cover, test assembly includes top board and holding down plate, be used for pressing from both sides between top board and the holding down plate and establish the high polymer test piece, make the high polymer test piece obtain certain axial pressure in compression state, set up the hollow column in the intermediate position of base, be connected with the water inlet pipe way with hollow column intercommunication on the base, so that hydroenergy in the hollow column can permeate into the high polymer test piece, thereby carry out the penetration test, be connected with the inlet line on the translucent cover, make maintain stable atmospheric pressure in the translucent cover, atmospheric pressure acts as the confining pressure; the device for testing the impermeability of the non-aqueous reaction high polymer grouting material enables a high polymer test piece to be tested and obtain the impermeability of the high polymer test piece under various conditions under the action of axial pressure, confining pressure and osmotic pressure;
the testing component in the non-aqueous reaction high polymer grouting material impermeability testing device provided by the utility model comprises a high polymer test piece, an upper pressing plate and a lower pressing plate, wherein the high polymer test piece is clamped between the upper pressing plate and the lower pressing plate, so that the testing component forms a frame structure to be convenient for integral movement, and the upper pressing plate and the lower pressing plate are detachably connected through a plurality of connecting components to be convenient for dismounting the high polymer test piece; can dismantle with the base through the holding down plate and be connected for whole test assembly can be the integral erection carry out impervious performance test on the base, easy dismounting and easy operation, thereby be convenient for carry out a plurality of high polymer test pieces and carry out impervious performance test.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is the utility model provides a non-aqueous reaction polymer grouting material impermeability test device's schematic structure diagram:
FIG. 2 is a schematic structural diagram of the test assembly of FIG. 1;
fig. 3 is a schematic structural view of the upper press plate provided by the present invention;
fig. 4 is a schematic cross-sectional structural view of the upper platen provided by the present invention;
fig. 5 is a schematic top view of the base according to the present invention;
[ description of reference ]
1: testing the component; 11: an upper pressure plate; 12: a lower pressing plate; 13: a screw; 14: a locking member;
2: a base; 21: a stud; 22: a supporting seat;
3: a high polymer test piece; 4: a transparent cover; 5: a hollow column; 6: an air intake line; 7: a water inlet pipeline; 8: a threaded sleeve; 9: hollowing out the grooves; 10: a groove; 15: a water permeable plate; 16: a latex film; 17: an exhaust hole; 18: and (7) installing holes.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The utility model provides a non-water reaction high polymer grouting material impermeability test device, as shown in figure 1 and figure 2, it includes a test component 1, a base 2 and a transparent cover 4 connected with the base 2 in a sealing way, a hollow column 5 is arranged on the middle position of the base 2, the hollow column 5 is an inner cavity with an opening on the top, the test component 1 includes an upper press plate 11 and a lower press plate 12, the upper press plate 11 and the lower press plate 12 are both provided with a hollow groove 9 to make the water in the hollow column permeate into the high polymer test piece 3, thereby completing the permeation test, the upper press plate 11 and the lower press plate 12 are detachably connected through the connecting component, a containing space is arranged between the upper press plate 11 and the lower press plate 12 for clamping the high polymer test piece 3, the lower press plate 12 is arranged on the hollow column 5 to make the hollow groove 9 of the lower press plate 12 aim at the hollow column 5, a sealing element is arranged between the hollow column 5 and the lower press plate 12, the lower pressing plate 12 is detachably connected with the base 2; an air inlet pipeline 6 is connected to the transparent cover 4, and an air inlet pipeline 7 communicated with the inner cavity of the hollow column 5 is connected to the base 2.
Wherein, top board 11, holding down plate 12 and base 2 are the steel sheet, and translucent cover 4 is the glass cover, and glass cover and base 2 sealing connection both can play sealed effect through setting up the glass cover, can observe the change of high polymer test piece 3 infiltration in-process again.
The utility model provides a non-aqueous reaction high polymer grouting material impermeability test device is through setting up test assembly 1, base 2 and the translucent cover 4 with base 2 sealing connection, test assembly 1 includes top board 11 and holding down plate 12, be used for pressing from both sides between top board 11 and the holding down plate 12 and establish high polymer test piece 3, make high polymer test piece 3 obtain certain axial pressure in the pressurized state, set up hollow column 5 in the intermediate position of base 2, be connected with the inlet channel 7 with hollow column 5 intercommunication on base 2, so that the hydroenergy in the hollow column 5 can permeate into high polymer test piece 3, thereby carry out the penetration test, be connected with air inlet pipeline 6 on the translucent cover 4, make maintain stable atmospheric pressure in the translucent cover 4, atmospheric pressure acts as the confined pressure; the device for testing the impermeability of the non-aqueous reaction high polymer grouting material enables the high polymer test piece 3 to be capable of testing and obtaining the impermeability of the high polymer test piece 3 under various conditions under the action of axial pressure, confining pressure and osmotic pressure.
In a preferred embodiment, as shown in fig. 2 and 3, the connecting assembly comprises a screw 13 and a locking member 14, the locking member 14 can be selected as a bolt, the upper pressing plate 11 and the lower pressing plate 12 are detachably connected through a plurality of screws and bolts, the testing assembly 1 is put into a press machine for loading, the bolt is quickly screwed when the testing assembly is loaded to a preset pressure, the binding force of the bolt is changed into the load loaded on the test piece, the test piece is always in a pressed state, and the axial stress is preserved by arranging the screws and the bolts so that the binding force replaces the load of the press machine; specifically, four symmetrical screws can be arranged, the upper pressure plate 11 and the lower pressure plate 12 are arranged in parallel, the upper pressure plate 11 and the lower pressure plate 12 fix the high polymer test piece 3 through a locking member 14 sleeved on the screws, and the screws are connected with studs 21 of the base 2 through threaded sleeves 8, specifically, the upper pressure plate 11 and the lower pressure plate 12 are provided with mounting holes 18 matched with the screws, wherein the upper pressure plate 11 and the lower pressure plate 12 are provided with four mounting holes 18 symmetrically distributed, as shown in fig. 4 and 5, so as to facilitate the mounting of the four screws, the four screws sequentially penetrate through the upper pressure plate 11 and the lower pressure plate 12, two ends of the four screws are locked through the bolts so as to clamp the high polymer test piece 3 between the upper pressure plate 11 and the lower pressure plate 12, and the four screws are connected with the studs 21 of the base 2 through the four threaded sleeves 8 matched with the four screws, so that the testing assembly 1 is convenient and rapid to mount, the accuracy of the test is enhanced by arranging a plurality of screws to keep the upper pressure plate 11 and the lower pressure plate 12 parallel; by providing a threaded sleeve 8, the test assembly 1 can be removed separately from the entire instrument, facilitating the application of axial stress thereto.
Further, as shown in fig. 3, a plurality of groups of hollow grooves 9 are formed in the center positions of the upper pressing plate 11 and the lower pressing plate 12, each group of hollow grooves 9 includes four arc sections, the four arc sections can form a whole circle, the plurality of groups of hollow grooves 9 are distributed annularly and equidistantly, specifically, the plurality of groups of hollow grooves 9 are distributed at intervals from outside to inside in sequence, the hollow grooves 9 of the upper pressing plate 11 correspond to the hollow grooves 9 of the lower pressing plate 12, the hollow columns 5 correspond to the hollow grooves 9 of the lower pressing plate 12, and the inner diameters of the hollow columns 5 are consistent with the inner diameter of the outermost layer of hollow grooves 9, so that water of the hollow columns 5 can penetrate into the high polymer test piece 3 uniformly, and by arranging the plurality of groups of hollow grooves 9, the axial pressure can be applied to the high polymer test piece 3 uniformly as far as possible while the penetrating water flow is ensured to pass through uniformly.
In order to position the high polymer test piece 3 conveniently, as shown in fig. 4, a groove 10 may be formed in the upper pressure plate 11, the groove 10 is used for installing and positioning the high polymer test piece 3, the groove 10 may be a circular groove, the high polymer test piece 3 can be positioned quickly and accurately, and the lower pressure plate 12 can be positioned by matching with the screws around, so that the hollow grooves 9 of the upper pressure plate 11 correspond to the hollow grooves 9 of the lower pressure plate 12 one to one.
In addition, the upper press plate 11 and the lower press plate 12 are used for being equipped with the porous disk 15 respectively with the face that the high polymer test piece 3 contacted, and porous disk 15 is opened has the porous groove that corresponds with fretwork groove 9 to in the hydroenergy of cavity post 5 can permeate into high polymer test piece 3, specifically, all be equipped with porous disk 15 between high polymer test piece 3 and the upper press plate 11, between high polymer test piece 3 and the lower press plate 12, so that permeate through setting up porous disk 15 for the impervious performance test of high polymer test piece 3.
Preferably, the test component 1 further comprises a latex film 16, the latex film 16 is used for being arranged on the side surface of the high polymer test piece 3, the defect that a common non-aqueous reaction high polymer grouting material impermeability test device cannot be tested under the confining pressure effect can be overcome, and side surface penetration can be effectively prevented.
Preferably, the transparent cover 4 is provided with an exhaust hole 17, the exhaust hole 17 needs to be plugged in a penetration laboratory, the exhaust hole 17 can be opened after the experiment is completed, the air inlet pipeline 6 is used for connecting an air pump, a barometer is arranged on the air inlet pipeline 6, the air pressure in the non-aqueous reaction high polymer grouting material impermeability test device can be controlled by setting the barometer, the water inlet pipeline 7 is used for connecting a water pump, a hydraulic pressure meter is arranged on the water inlet pipeline 7, and the hydraulic pressure in the hollow column 5 can be constantly focused by setting the hydraulic pressure meter.
Preferably, the bottom of the base 2 is provided with a support seat 22 for better supporting.
Preferably, the present invention further provides a penetration method suitable for the apparatus for testing impermeability of a non-aqueous reaction polymer grouting material, which comprises the following steps:
s1: injecting water into the hollow column 5 through a water inlet pipeline, and fixing the high polymer test piece 3 between the upper pressure plate and the lower pressure plate to form a test assembly;
s2: loading the testing component 1 to a preset pressure and then locking, installing the testing component 1 on the base 2, and sealing the lower pressing plate 12 and the hollow column 5 through a sealing element;
s3: applying air pressure into the protective cover through the air inlet pipeline 6 until reaching the preset air pressure;
s4: applying pressure to the high polymer test piece 3 through the water inlet pipeline 7 and stabilizing osmotic pressure to ensure that the water pressure is constantly controlled within a preset pressure within 24 hours, and taking the time for reaching the stable pressure as the test record starting time;
s5: after the permeation is finished, splitting the high polymer test piece 3 into two parts along the longitudinal section of the high polymer test piece, tracing the water mark by using ink after the water mark is seen clearly, wherein the water mark is a water seepage contour, and measuring and recording the water seepage heights of a plurality of water seepage contour lines;
s6: taking the average value of the plurality of water seepage heights obtained in the step S5 as the measured value of the water seepage height of the high polymer test piece;
s7: the relative permeability coefficient of the high polymer test piece 3 was calculated from the measured water permeation height value obtained in step S6.
Further, one preferred embodiment of the infiltration method comprises the following specific infiltration steps:
s1: injecting water into a hollow column 5 of a water pump, removing air in a metal pipeline and the hollow column, respectively arranging water permeable plates 15 at two ends of a high polymer test piece 3, attaching a latex film 16 to the side surface of the high polymer test piece 3, and then installing a screw and a bolt on an upper pressing plate 11 and a lower pressing plate 12 to form a test assembly 1;
s2: loading the test assembly 1 in a press machine, quickly screwing the bolt when the test assembly 1 is loaded to a preset pressure to enable the constraint force of the bolt to become a load loaded on the high polymer test piece 3, then installing the loaded test assembly 1 on the base 2 through the threaded sleeve 8, and sealing the lower pressure plate 12 and the hollow column 5 through a sealing element;
s3: plugging the vent hole 17, making a sealing measure at a joint, and applying air pressure into the protective cover through the air inlet pipeline 6 by using an air pump according to an air pressure meter until the preset air pressure is reached;
s4: applying pressure to the high polymer test piece 3 through a water inlet pipeline 7 by using a water pump according to a hydraulic gauge and stabilizing osmotic pressure, so that the water pressure is constantly controlled to be 0.8 +/-0.05 MPa within 24 hours, and the pressurizing process is not more than 5min, and the time for reaching the stable pressure is taken as the initial time (accurate to 1min) of test record; the condition of water seepage of the upper end face of the high polymer test piece 3 is observed constantly in the pressure stabilizing process, when the water seepage condition appears on the end face of the high polymer test piece 3, the test is stopped immediately, the time is recorded, and the water seepage height of the high polymer test piece 3 is the height of the high polymer test piece 3. If the end surface of the high polymer test piece 3 still has no water seepage after 24 hours, the high polymer test piece 3 should be taken out in time. When water was found to seep out from the side of the polymer specimen 3 during the test, the polymer specimen 3 was not well sealed, and the polymer specimen 3 was sealed again as specified in the test.
S5: after the permeation is finished, putting the high polymer test piece 3 on a press, splitting the high polymer test piece 3 into two parts along the longitudinal section of the high polymer test piece, tracing the water mark by using ink after the water mark is seen clearly (about 2-3 min later), namely the water permeation profile, and measuring and recording the water permeation heights of ten water permeation profile lines by using a ruler;
s6: taking the average value of the water seepage heights at the ten measuring points obtained in the step S5 as the measured water seepage height of the high polymer test piece 3, wherein the measured water seepage height is the average water seepage height, and the average water seepage height is calculated according to the following formula:
in the formula: h is j Is the water seepage height (mm) of the ith test piece at the jth measuring point;
And when the difference between certain data and the average value of the test piece is more than 15%, rejecting the data.
S7: the relative permeability coefficient of the high polymer test piece 3 was calculated from the measured water seepage height value obtained in step S6, and the relative permeability coefficient was calculated according to the following formula:
in the formula: k r -relative permeability coefficient, cm/h;
D m -average water penetration height, cm;
h-water pressure, expressed as the height of the water column, cm;
t-constant pressure time, h;
a-Water absorption of the material, typically 0.03.
Note: 1MPa water pressure, expressed as the height of the water column in 10200 cm.
It should be understood that the above description of the embodiments of the present invention is only for illustrating the technical lines and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, but the present invention is not limited to the above specific embodiments. All changes and modifications within the scope of the claims should be covered by the protection scope of the present invention.
Claims (9)
1. The device for testing the impermeability of the non-aqueous reaction high polymer grouting material is characterized by comprising a testing component, a base and a transparent cover hermetically connected with the base, wherein a hollow column is arranged in the middle of the base, and the top of the hollow column is provided with an open inner cavity; the testing assembly comprises an upper pressing plate and a lower pressing plate, hollow grooves are formed in the upper pressing plate and the lower pressing plate, and the upper pressing plate and the lower pressing plate are detachably connected through a connecting assembly; an accommodating space is formed between the upper pressing plate and the lower pressing plate and used for clamping a high polymer test piece, the lower pressing plate is arranged above the hollow column so that the hollow groove of the lower pressing plate is aligned with the hollow column, and a sealing element is arranged between the hollow column and the lower pressing plate; the transparent cover is connected with an air inlet pipeline, and the base is connected with a water inlet pipeline communicated with the inner cavity of the hollow column.
2. The apparatus of claim 1, wherein the connection assembly comprises a plurality of screws and locking members, the upper plate and the lower plate are detachably connected by a plurality of screws, the upper plate and the lower plate are arranged in parallel, the upper plate and the lower plate fix the polymer test piece by the locking members sleeved on the screws, and the screws are connected with the studs of the base by threaded sleeves.
3. The apparatus for testing impermeability of a non-aqueous reactive polymer grouting material according to claim 2, wherein the hollow grooves of the upper press plate correspond to the hollow grooves of the lower press plate in position, and a plurality of sets of the hollow grooves are annularly and equidistantly distributed.
4. The apparatus for testing impermeability of a non-aqueous reactive polymer grouting material according to claim 3, wherein an inner diameter of the hollow column is identical to an inner diameter of the outermost hollow groove.
5. The apparatus for testing impermeability of a non-aqueous reactive polymer grouting material according to any one of claims 1-4, wherein the upper press plate is provided with a groove for positioning the polymer test piece.
6. The apparatus for testing impermeability of a non-aqueous reaction polymer grouting material according to any one of claims 1-4, wherein the surfaces of the upper and lower pressing plates for contacting the polymer test piece are respectively provided with a permeable plate.
7. The apparatus for testing impermeability of non-aqueous reactive polymer grouting material according to any one of claims 1-4, wherein the testing component further comprises a latex film, and the latex film is used for being arranged on the side surface of the polymer test piece.
8. The apparatus for testing impermeability of a non-aqueous reactive polymer grouting material according to any one of claims 1-4, wherein the transparent cover is provided with an air vent, the air inlet pipeline is used for connecting an air pump and is provided with a barometer, the water inlet pipeline is used for connecting a water pump and is provided with a hydraulic pressure meter.
9. The apparatus for testing impermeability of non-aqueous reactive polymer grouting material according to any one of claims 1-4, wherein a support seat is provided at the bottom of the base.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220269208.3U CN217277709U (en) | 2022-02-10 | 2022-02-10 | Non-aqueous reaction high polymer grouting material anti-permeability performance testing device |
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| CN202220269208.3U CN217277709U (en) | 2022-02-10 | 2022-02-10 | Non-aqueous reaction high polymer grouting material anti-permeability performance testing device |
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