CN220104597U - Grouting slurry separation degree test die - Google Patents
Grouting slurry separation degree test die Download PDFInfo
- Publication number
- CN220104597U CN220104597U CN202223217835.1U CN202223217835U CN220104597U CN 220104597 U CN220104597 U CN 220104597U CN 202223217835 U CN202223217835 U CN 202223217835U CN 220104597 U CN220104597 U CN 220104597U
- Authority
- CN
- China
- Prior art keywords
- test
- slurry
- base
- examination mould
- test die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 96
- 239000002002 slurry Substances 0.000 title claims abstract description 70
- 238000000926 separation method Methods 0.000 title claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000007493 shaping process Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000000465 moulding Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 238000007569 slipcasting Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000001360 synchronised effect Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 230000005641 tunneling Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010220 ion permeability Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model belongs to the technical field of test mould detection, in particular to a grouting slurry separation degree test mould, which provides the following scheme: the slurry test device comprises a shaping mechanism, wherein the shaping mechanism comprises a test die structure for manufacturing a slurry test piece, a test die pouring groove for shaping and demolding is formed in the middle of the top end of the test die structure, and shaping holes are formed in the groove of the test die pouring groove, so that the slurry test device has the beneficial effects that: the cavity and the shaping trompil that adopt are for the drawing of patterns usefulness, and when the thick liquid that places was thinner shape, can self volume shrink after becoming certain intensity, and the air can follow the base and get into after the examination mould is invertd, can deviate from complete test piece automatically slowly, avoids the test piece to damage.
Description
Technical Field
The utility model relates to the field of test mould detection, and particularly discloses a grouting slurry separation degree test mould.
Background
The test die, or the pressure test resistant die, or the engineering test die is a laboratory of construction sites and various institutions. The conventional test mould is divided into cast iron and a plastic mould, the cast iron mould is firm and durable, the recycling value is high, the cost is slightly high, the plastic test mould is low in cost, and the test block is slightly deviated due to expansion caused by heat and contraction caused by cold due to the influence of weather temperature and the like. It is generally better for laboratories to adhere to cast iron test molds, but due to their low cost, plastic test molds are preferred over multiple uses.
In the current stage, in the process of processing practice of grouting slurry, the separation degree of the slurry is not detected, but the shaping processing of the slurry is always required to be carried out according to the designated grouting slurry before the detection of the separation degree of the slurry is carried out; however, compared with the grouting test piece in the current stage, the most difficult point is the standardized separation degree detection of the test film, so that the separation degree detection of the grouting slurry is difficult, and the molding processing is not convenient enough.
Disclosure of Invention
In view of the above-mentioned drawbacks or shortcomings in the prior art, the present utility model is directed to providing a grouting slurry separation degree test mold, which comprises a molding mechanism, wherein the molding mechanism comprises a test mold structure for manufacturing a slurry test piece, a test mold pouring slot for performing molding and demolding is formed in the middle of the top end of the test mold structure, a molding opening is formed in the slot position of the test mold pouring slot, and the thickness of a side wall sheet of the test mold structure is 2.5CM.
As a preferred embodiment of the present utility model: the bottom of examination mould structure is equipped with the mechanism that bears that is used for bearing and places, bear the mechanism including setting up subaerial base, the bottom middle part of base is provided with the circular plate, the top middle part of circular plate is provided with feeding mechanism, feeding mechanism is including the hopper of installation setting at examination mould structure top.
As a preferred embodiment of the present utility model: the middle part of the bottom end of the hopper is provided with a discharging slot, and the bottom of the discharging slot is communicated with a guide pipe.
As a preferred embodiment of the present utility model: the appearance of base is circular, wherein is located the bottom middle part of base has been seted up and has been used for discharging unnecessary gas exhaust hole, the hole site bottom of exhaust hole is relative with the central part position of base.
As a preferred embodiment of the present utility model: the bottom middle part of base has seted up the cavity, the bottom and the ground support of cavity, just the base is filled up with the pad cloth that absorbs water that is used for absorbing water with the link position of examination mould structure.
As a preferred embodiment of the present utility model: the inner wall surface of the test mold structure is coated with a release agent, the appearance of the test mold structure is cylindrical, a shaping slot for throwing in slurry is arranged in the test mold structure, a slurry test piece is poured in the shaping slot, and the slurry test piece is in contact with the edge of the test mold structure.
As a preferred embodiment of the present utility model: the height of the cylinder body of the test mold structure is 30CM, the diameter of the cavity formed by the inner diameter is 7CM, wherein the shape of the base is circular, and the diameter is 12CM.
As a preferred embodiment of the present utility model: the test die structure is made of 75PVC pipe materials.
The beneficial effects of the utility model are as follows:
1) The cavity and the shaping opening are used for demolding, when the placed slurry is thinner, the volume of the slurry can shrink after the slurry becomes certain strength, air can enter from the base after the test mold is inverted, a complete test piece can be automatically and slowly pulled out, the damage of the test piece is avoided, the aim of recycling is fulfilled, the labor and the mechanical force are saved, and the device is convenient and quick;
2) The feeding mechanism and the hopper are used for realizing the interventional connection of placed materials, and the discharge slotting and the circular charging barrel are arranged under the mutual connection, so that the rapid injection and the molding of a slurry test piece are realized, and the synchronous grouting method is adopted: in the shield tunneling process, the construction process of injecting slurry into the overdrawing gap through the shield tail grouting pipe is synchronously carried out with the shield tunneling construction, synchronous grouting is a key working procedure of the shield tunneling, reasonable construction process selection and high-quality synchronous grouting slurry are important guarantees of safety of the shield tunneling construction, early stability of the segment lining is ensured, the segment is prevented from being in a slurry environment without supporting force, the pipe piece is enabled to generate displacement deformation, the staggered platform caused by overlarge floating of the pipe piece is prevented, the pipe piece assembling quality is ensured, the slurry hardening body is used as a first waterproof barrier of a shield tunnel, the waterproof capability of the tunnel is enhanced, underground water is isolated from the pipe piece, and the slurry hardening body is used as a protective layer and a reinforcing layer of a shield tunnel lining structure, so that corrosion of the underground water to the pipe piece is avoided or slowed down, and the slurry hardening body has certain durability.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a separation state structure of the present utility model;
FIG. 3 is a schematic cross-sectional view of a carrying mechanism according to the present utility model;
fig. 4 is a schematic structural view of a feeding mechanism of the present utility model.
In the figure: 1. a shaping mechanism; 11. a test mold structure; 12. pouring a groove by a test die; 13. shaping the holes; 2. a carrying mechanism; 21. a base; 22. a circular plate; 23. a cavity; 24. a release agent; 25. a slurry test piece; 3. a feeding mechanism; 31. a hopper; 32. discharging and slotting; 33. a catheter.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings.
The drawings in the embodiments of the utility model: the different kinds of cross-sectional lines in the drawings are not marked according to national standards, and the material of the elements is not required, so that the cross-sectional views of the elements in the drawings are distinguished.
Referring to fig. 1-4, a grouting slurry separation degree test mold comprises a molding mechanism 1, wherein the molding mechanism 1 comprises a test mold structure 11 for manufacturing a slurry test piece, a test mold pouring groove 12 for performing molding and demolding is formed in the middle of the top end of the test mold structure 11, a molding opening 13 is formed in the groove position of the test mold pouring groove 12, and the thickness of a side wall sheet of the test mold structure 11 is 2.5CM.
In this embodiment: the bottom of test pattern structure 11 is equipped with and is used for bearing the weight of the mechanism 2 that bears of placing, bears the weight of the mechanism 2 and is provided with circular plate 22 including setting up subaerial base 21 in the middle part of the bottom of base 21, and the top middle part of circular plate 22 is provided with feeding mechanism 3, and feeding mechanism 3 is including installing the hopper 31 that sets up at test pattern structure 11 top.
The base 21 and the circular plate 22 are used for realizing placement of the base 21 and the ground of a house for experiments, and a space is reserved between the inner cavity structure of the base 21 and the ground to prevent the built-in water absorption structure, so that leakage caused by redundant liquid is avoided.
In this embodiment: a discharge slot 32 is formed in the middle of the bottom end of the hopper 31, and a guide pipe 33 is communicated with the bottom of the discharge slot 32.
Cement slurry between the hoppers 31 is injected into the forming test pattern 11.
In this embodiment: the shape of the base 21 is circular, wherein an exhaust hole for exhausting redundant gas is formed in the middle of the bottom end of the base 21, and the bottom of a hole position of the exhaust hole is opposite to the center of the base 21.
The vent holes employed may be vented from the location of such vent holes as appropriate for some slurry injection.
In this embodiment: the middle part of the bottom end of the base 21 is provided with a cavity 23, the bottom end of the cavity 23 is supported with the ground, and a water absorption cloth liner for absorbing water is arranged at the position of the connecting end of the base 21 and the test die structure 11.
By the base 21 and the cavity 23, the air in the cavity 23 can not be discharged in time due to the contact with the ground is prevented.
In this embodiment: the inner wall surface of the test mold structure is coated with a release agent 24, the appearance of the test mold structure 11 is cylindrical, a shaping slot for throwing in slurry is arranged in the test mold structure 11, a slurry test piece 25 is poured in the shaping slot, and the slurry test piece 25 is in contact with the edge of the test mold structure 11.
By the arranged slurry test piece 25 and the connected solidification forming structure, better prominence is realized in the aspect of forming subsequent materials.
In this embodiment: the cylinder height of the test mold 11 is 30CM, and the diameter of the cavity formed by the inner diameter is 7CM, wherein the shape of the base 21 is circular, and the diameter is 12CM.
The normalized design employed can be efficiently sized quickly.
In this embodiment: the test mould structure 11 is made of 75PVC pipe material.
The 75PVC pipe material adopted is more stable in construction.
The specific use is as follows:
(1) Processing a slurry separation degree test mold;
the first step: firstly, a constructor needs to manufacture a 75PVC pipe with a length of 30cm, an inner diameter of 7cm and a wall thickness of 2.5mm, a base is a pipe cover corresponding to PVC, the pipe cover with an outer diameter of 12cm is fully bonded by using a U-PVC high-quality quick adhesive, and a round hole with a diameter of 1cm is drilled in the center of the base;
secondly, constructors need to brush the release agent on the inner part of the separation degree test mould 11 firstly, then place a paper sheet (or water absorption cloth) at the round hole of the base on the inner side of the cylinder body to fully permeate with the release agent for isolating the leakage of the slurry from the hole site on the bottom, at the moment, the separation degree test mould needs to be firmly placed on a horizontal operation platform, the manual operation is carried out on the slurry, the slurry is slowly poured into the separation degree test mould 11 until the height of the separation degree test mould is equal to the upper opening of the test mould, and then a scraper is used for scraping the separation degree test mould, so that the disturbance of the test mould 11 is reduced as much as possible in the forming process, and natural solidification is ensured as much as possible.
(2) And (3) maintaining the slurry at the room temperature for 3 days, and carrying out hydration reaction on the slurry to form certain strength.
Firstly, when the slurry is naturally solidified, a certain volume shrinkage can be generated in 3 days of hardening because of thinner slurry, so that the inverted test mold 11 can be tried, a test piece can be slowly pulled out along with the air entering of a round hole at the bottom, at the moment, the test piece is gently held by a hand, and then is uniformly sawed into three parts of test pieces with approximately equal upper, middle and lower parts by a small saw blade, and then numbering is carried out.
And a second step of: immersing the sawed upper third and lower third slurry test pieces 25 in water for 2 hours, wherein the water surface is not less than 5cm higher than the test pieces, the liquid surface poured into the barrel is not less than 5cm higher than the test pieces, taking out from the water barrel, gently brushing loose and easily-peeled particles on the surface by using a brush, and weighing the mass M in water by using a water immersion balance Water and its preparation method Taking out the wet towel which is wrung out and lightly rubbing the bright trace water on the surface, and rapidly weighing the mass M in the air Empty space Record mass M in air Upper part Mass M in water Water supply And mass M in air Lower part(s) Mass m in water Sewer water And calculating the separation index of the slurry through a formula.
The calculation formula is as follows:
ρ upper part ＝M Overhead space /(M Overhead space -M Water supply ) (1)
ρ Lower part(s) ＝M Under the air /(M Under the air -M Sewer water ) (2)
M Overhead space The mass of the upper third hardened slurry in air, g;
M under the air The mass of the lower third hardened slurry in air, g;
M water supply -mass of upper third hardened slurry in water, g;
M sewer water The mass of the lower third hardened slurry in water, g;
ρ upper part Upper surface dry density of slurry hardened substance, g/cm 3 ；
ρ Lower part(s) Lower surface dry density of the slurry hardening product, g/cm 3 ；
R-slurry separation,%;
the method for detecting the separation degree of the synchronous grouting slurry after the shield segment wall is characterized by comprising the following steps of Overhead space 、M Under the air 、M Water supply 、M Sewer water The values of (C) are all accurate to 0.01g, ρ Upper part 、ρ Lower part(s) All accurate to 0.001g/cm 3 The value of R is accurate to 0.1.
And a third step of: after the synchronous grouting slurry is hardened for 2-3 days, the next construction control can be guided by giving a certain control index according to the detected degree of separation of the slurry, and the construction quality of the synchronous grouting slurry can be better ensured. The stratum settlement is reduced, a supporting system is provided for a closed space between the duct piece and the shield tail, uniform strength is formed quickly, and damage caused by unbalanced compression of the duct piece by surrounding buildings due to stratum settlement is reduced; the shield tunneling direction is well controlled, the duct piece is well fixed, the early stability of the duct piece lining is ensured, the dislocation caused by the lateral displacement deformation of the duct piece and the overlarge floating of the duct piece is prevented, the cracking of surrounding buildings or the damage of pipelines are prevented, the splicing quality of the duct piece is ensured, the high-performance synchronous grouting slurry can be produced by controlling the separation index of the slurry, the synchronous grouting slurry in the gap of the shield tail is filled fully at one time, the secondary grouting time and the grouting cost are reduced, the construction period is saved, the economic benefit is improved, the separation index of the slurry is controlled, the impermeability, the chloride ion permeability, the sulfate corrosion resistance and other structural durability of the slurry hardening substance are improved, and the diseases of the shield tunnel in the operation period are avoided, so that the manufactured test piece is convenient for further carrying out the environmental experiment.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
The above description is only illustrative of the preferred embodiments of the present utility model and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in the present utility model is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present utility model (but not limited to) having similar functions are replaced with each other.
Claims (8)
1. The utility model provides a slip casting thick liquid degree of separation examination mould, includes shaping mechanism (1), its characterized in that, shaping mechanism (1) is including a examination mould structure (11) that are used for making thick liquid test piece, and wherein a examination mould pouring groove (12) that is used for carrying out moulding drawing of patterns is offered at the top middle part of this examination mould structure (11), shaping trompil (13) have been offered to the inside trench of examination mould pouring groove (12), and wherein the lateral wall flake thickness of this examination mould structure (11) is 2.5CM.
2. The grouting slurry separation degree test die according to claim 1, wherein: the bottom of examination mould structure (11) is equipped with and is used for bearing and places bears mechanism (2), bear mechanism (2) including setting up subaerial base (21), the bottom middle part of base (21) is provided with circular plate (22), the top middle part of circular plate (22) is provided with feeding mechanism (3), feeding mechanism (3) are including installing hopper (31) that set up at examination mould structure (11) top.
3. The grouting slurry separation degree test die according to claim 2, wherein: the middle part of the bottom end of the hopper (31) is provided with a discharging slot (32), and the bottom of the discharging slot (32) is communicated with a guide pipe (33).
4. The grouting slurry separation degree test die according to claim 2, wherein: the appearance of base (21) is circular, wherein is located in the middle of the bottom of base (21) has been seted up and is used for discharging unnecessary gas exhaust hole, the hole site bottom in exhaust hole is relative with the central part position of base (21).
5. The grouting slurry separation degree test die according to claim 2, wherein: the middle part of the bottom end of the base (21) is provided with a cavity (23), the bottom end of the cavity (23) is supported with the ground, and a water absorption cloth pad for absorbing water is arranged at the connecting end position of the base (21) and the test die structure (11).
6. The grouting slurry separation degree test die according to claim 1, wherein: the inner wall surface of examination mould structure (11) is scribbled release agent (24), the appearance of examination mould structure (11) is the column casing form, just the inside of examination mould structure (11) is built-in to have the shaping fluting that is used for putting in thick liquid, and wherein this shaping grooved slot is inside to be poured has thick liquid test piece (25), thick liquid test piece (25) and the border contact of examination mould structure (11).
7. The grouting slurry separation degree test die according to claim 4, wherein: the height of the cylinder body of the test die structure (11) is 30CM, the diameter of the cavity with the inner diameter being formed is 7CM, and the shape of the base (21) is circular, and the diameter is 12CM.
8. The grouting slurry separation degree test die according to claim 1, wherein: the test mould structure (11) is made of 75PVC pipe materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223217835.1U CN220104597U (en) | 2022-11-30 | 2022-11-30 | Grouting slurry separation degree test die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223217835.1U CN220104597U (en) | 2022-11-30 | 2022-11-30 | Grouting slurry separation degree test die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220104597U true CN220104597U (en) | 2023-11-28 |
Family
ID=88882389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223217835.1U Active CN220104597U (en) | 2022-11-30 | 2022-11-30 | Grouting slurry separation degree test die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220104597U (en) |
-
2022
- 2022-11-30 CN CN202223217835.1U patent/CN220104597U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107060829B (en) | Assembled lining structure for tunnel model test and manufacturing method thereof | |
| CN102251662B (en) | Cast-in-place process for ultra light foamed cement-based bearing heat insulation wallboard | |
| CN220104597U (en) | Grouting slurry separation degree test die | |
| CN110318543A (en) | The building construction method that integration pours | |
| CN106948502A (en) | A kind of water-proof top cover and its construction method | |
| CN209620361U (en) | The board-like floating build floor of precast concrete with heat insulating and sound insulating function | |
| CN109057230B (en) | Reverse-beating formed bathroom chassis and manufacturing method thereof | |
| CN205117073U (en) | A anti anti -percolator that splits for building outer windowsill position | |
| CN213564786U (en) | Sand face waterproofing membrane | |
| CN211333777U (en) | Gypsum wallboard forming die | |
| JP7365180B2 (en) | Methods for measuring relative humidity, drying shrinkage strain, and relative moisture content inside concrete | |
| CN106284855A (en) | A kind of compound curved surface photoelectric integral plate and preparation method thereof | |
| CN114809000B (en) | Rapid construction method of prefabricated plate brick moulding bed | |
| CN212772484U (en) | Waterproof construction structure for side wall of underground chamber in extremely narrow space | |
| CN215150318U (en) | Gypsum shield constructs section of jurisdiction model and pours mould | |
| CN212405271U (en) | Anti-floating anchor rod waterproof structure | |
| CN207194906U (en) | Precast lining structure for tunnel model test | |
| JP7245046B2 (en) | Method for measuring relative humidity inside concrete | |
| CN113513092A (en) | Civil engineering waterproof structure and construction method thereof | |
| CN219931041U (en) | Pit structure with elevator | |
| CN201552654U (en) | Prefabricated arch mold | |
| CN212772485U (en) | Waterproof construction structure for side wall of underground chamber | |
| CN220848748U (en) | Post-cast strip concrete placement antiseep structure | |
| NO821335L (en) | BUILDING PLATE AND PROCEDURE FOR PREPARING THE SAME | |
| CN220699956U (en) | Polymer mortar shaping auxiliary device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |