CN113352431A - Improved preparation method of filling body test piece - Google Patents
Improved preparation method of filling body test piece Download PDFInfo
- Publication number
- CN113352431A CN113352431A CN202110740157.8A CN202110740157A CN113352431A CN 113352431 A CN113352431 A CN 113352431A CN 202110740157 A CN202110740157 A CN 202110740157A CN 113352431 A CN113352431 A CN 113352431A
- Authority
- CN
- China
- Prior art keywords
- test piece
- mold
- film
- filling body
- demolding
- 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.)
- Withdrawn
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 230000006378 damage Effects 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000005065 mining Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 229920002545 silicone oil Polymers 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
- B28B7/364—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article of plastic material or rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
- B28B7/384—Treating agents
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The invention discloses an improved preparation method of a filling body test piece. The invention also discloses an easy-to-manufacture demoulding film. The invention discloses a preparation method of a filler test piece, which is improved on the basis of a conventional demoulding method, provides a simple and easy demoulding technology with low cost, and solves the problems that the filler test piece is not easy to demould or is easy to damage or even destroy the test piece in the demoulding process.
Description
Technical Field
The invention relates to the field of preparation of filling body test pieces, in particular to a demoulding method of a filling body test piece.
Background
In recent years, as the mining depth increases year by year, the problem of mining safety becomes more severe, and the problems of surface subsidence and the like emerge endlessly; meanwhile, the problems of mine pollution, water resource loss and the like are also paid attention by people. Filling mining can effectively solve various problems, such as maintaining the safety of mines, improving the recovery rate of natural resources, protecting the environment and the like. Under the background, the Chinese government is popularizing the filling mining technology, and the filling mining method is rapidly developed. The fillers are of interest to a large number of scholars, most of whom study the performance of the fillers by preparing standard cylindrical test pieces of the fillers.
At filling body test piece preparation field, the drawing of patterns is last step, also is the most critical one step, is different from with being the concrete test piece that uses cement as the cementing agent, and filling body test piece texture is soft on the contrary, and intensity and hardness are on the low side, if the operation is careless slightly, leads to the test piece very easily to appear damaging even complete damage, and last merit is short of one and is short of one. The common demolding methods are mainly divided into two types: one is to make a mold easy to demold, such as a split mold which can be opened directly to take out a test piece; and the other method is to add a proper release agent, for example, a layer of silicone oil and other agents is coated on the inner wall of the mold, so that the test piece can be taken out more conveniently. However, most demolding methods result in damage to the test piece or difficulty in demolding. Therefore, it is necessary to design a demolding method which is easy to demold and has less damage to the test piece.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the problem that a filling body test piece is not easy to demould or the test piece is easily damaged or even damaged in the demould process, the method is improved on the basis of the conventional demould method, and provides a simple and easy demoulding technology with low cost, so that the preparation of the test piece is easier.
In order to achieve the purpose, the invention provides the following technical scheme:
an improved preparation method of a filling body test piece comprises the following steps:
(1) manufacturing a mold: the conventional filling body is adopted to manufacture the mold, and because the filling body test piece generally takes a cylindrical shape as a main part, the mold is correspondingly cylindrical and is generally made of easily moldable materials such as acrylic, iron and the like.
(2) Preparing a demolding film: the polyethylene film is made into a rectangle with proper size and can be just attached to the inner wall of the cylinder mould for subsequent operation.
(3) Placing a release agent: and uniformly coating the release agent on the inner wall of the cylindrical mold.
(4) Placing a demolding film: and (3) attaching the release film prepared in the step (2) on the inner wall of the cylinder, and discharging bubbles between the release film and the inner wall. Thus, an improved mold is obtained.
(5) Pouring a test piece: and pouring the fully stirred slurry into the improved mould, and optimizing the pouring step.
(6) Demolding: lightly knock the edge of the mold, the test piece and the demolding film slide out of the mold together without detaching the demolding film, and the maintenance of the test piece under the wrapping of the demolding film is beneficial to maintaining a constant-humidity environment.
As a further scheme of the invention: the thickness interval of the demoulding film is 0.025 mm-0.15 mm, and the material is required to meet the requirements of easy cutting and no leakage of the demoulding agent. The excessive thickness of the demoulding film can affect the shape and the size of a test piece; the excessive thinness is easy to damage to influence the demoulding, and may cause the demoulding agent to be in direct contact with the test piece, thereby influencing the physical and chemical properties of the test piece.
As a further scheme of the invention: the short side of the release film may be slightly short but never too long and must be kept smooth and flat, otherwise air bubbles may be generated when placing the finished mold, affecting the shape and performance of the test piece.
As a further scheme of the invention: the step of pouring the test piece must ensure that the slurry does not leak and the oscillation time of each test piece is kept consistent.
Compared with the prior art, the invention has the advantages that:
compared with the traditional preparation method of the filling body test piece, the invention introduces the demoulding film on the basis of the original method, designs the cheap and easily obtained demoulding film according to the specific requirements, perfects the filling body manufacturing mould, optimizes the pouring step, and has the advantages of 6 points:
1, demolding is simpler, and a test piece is nearly free of damage;
2, isolating the test piece from the release agent, so that the physicochemical properties of the test piece are preserved to the maximum extent;
3, limiting the flow of the release agent to the bottom to the maximum extent, so that the shape of the obtained test piece is more standard;
4, the demoulding membrane material is taken from a plastic product commonly used in life, is low in cost and easy to obtain, and is convenient to popularize quickly;
5, the operation is simple and easy to realize.
And 6, the test piece is maintained under the coating of the demolding film, so that the maintenance humidity of the test piece is kept.
Detailed Description
The technical solution of the present patent will be further described in detail with reference to specific embodiments.
An improved method for demoulding a filling body test piece comprises the following steps:
(1) manufacturing a mold: taking the preparation of a standard cylindrical test piece (5cm × 10cm) as an example, a conventional filling body is adopted to manufacture a mold, the cylindrical mold with the inner diameter of 5cm and the height of 12cm is generally made of an easily moldable material, and preferably, the mold made of transparent materials such as acrylic and the like is selected as much as possible, so that the interior of the mold can be observed, and the subsequent steps can be conveniently carried out.
(2) Preparing a demolding film: the polyethylene film is cut into a rectangle with the length of 5 n cm (the inner perimeter of the cylinder mould) and the height of 12cm by scissors, and the polyethylene material is taken from a plastic bag in ordinary life, so that the low cost and the easy acquisition are ensured.
Preferably, the rectangular release film in step (2) must be flat, otherwise air bubbles are generated, and the preparation of the test piece is affected.
(3) Placing a release agent: the conventional release agent-silicone oil is continuously used, has the advantages of no toxicity, no harm, transparency, no flammability, no volatilization and the like, and the silicone oil is uniformly smeared on the inner wall of the cylinder mould. The release agent not only has a lubricating effect, but also can adhere a release film to the inner wall of the mold.
(4) Placing a demolding film: adhering the release film prepared in the step (2) on the inner wall of the cylinder, and specifically operating as follows: the short edge of the rectangular demolding film is axially parallel to the small round rod, the rectangular demolding film is clockwise rotated along the long edge of the rectangular demolding film, the demolding film is wound on the small round rod and then transferred into the cylinder, the small round rod is axially parallel to the axial direction of the cylinder mold, the small round rod is anticlockwise rotated, the demolding film is uniformly adhered to the inner wall of the mold, and finally air bubbles between the demolding film and the inner wall are extruded to be discharged. An improved mold is thus obtained.
(5) Pouring a test piece: the material that will stir pours into the mould after the improvement in, then fixed mould, taps the mould upper portion edge at last in order to reach the purpose of oscillation, not only can discharge the bubble like this, can also make the upper end of test piece more level and more smooth, end effect when reducing the experiment.
(6) Demolding: lightly knocking the edge of the mold, and sliding the test piece and the film out of the mold together, so that a nearly nondestructive test piece is obtained, the demolding film does not need to be removed, and the maintenance of the test piece under the packaging of the demolding film is favorable for maintaining a constant humidity environment.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit of the present invention should be included in the scope of the present invention.
Claims (4)
1. The improved preparation method of the filling body test piece is characterized in that the filling body test piece prepared by the method is easy to demould and has small damage.
2. The method of claim 1, wherein the release film has a thickness in the range of 0.025mm to 0.15mm and must be of a material that is easily cuttable and does not cause release agent leakage. The excessive thickness of the demoulding film can affect the shape and the size of a test piece; the mold release is easily damaged due to the fact that the mold release is too thin, so that the mold release is likely to be in direct contact with a test piece, and the mechanical property of the test piece is affected.
3. The method for preparing an improved filler test piece according to claim 1, wherein the short side of the release film is slightly short but never too long and must be kept smooth and flat, otherwise air bubbles may be generated when the finished mold is placed, which affects the shape and performance of the test piece.
4. The method for preparing an improved filling body test piece according to claim 1, wherein the step of pouring the test piece is carried out to ensure that slurry does not leak and the oscillation time of each test piece is consistent. The preparation method of the improved filling body test piece comprises the following steps:
step 1, manufacturing a mold: the conventional filling body is adopted to manufacture the mold, and because the filling body test piece generally takes a cylindrical shape as a main part, the mold is correspondingly cylindrical and is generally made of easily moldable materials such as acrylic, iron and the like.
Step 2, manufacturing a demolding film: the polyethylene film is formed into a rectangular shape of a suitable size to be attached to the inner wall of the cylindrical mold for subsequent operations.
Step 3, placing a release agent: and uniformly coating the release agent on the inner wall of the cylindrical mold.
Step 4, placing a demolding film: and (3) attaching the demoulding film prepared in the step (2) on the inner wall of the cylinder, and discharging bubbles between the demoulding film and the inner wall. Thus, an improved mold is obtained.
Step 5, pouring a test piece: and pouring the fully stirred slurry into the improved mould, and optimizing the pouring step.
Step 6, demolding: lightly knocking the edge of the mold, sliding the test piece out of the mold together with the demolding film, and maintaining the test piece under the package of the demolding film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110740157.8A CN113352431A (en) | 2021-06-30 | 2021-06-30 | Improved preparation method of filling body test piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110740157.8A CN113352431A (en) | 2021-06-30 | 2021-06-30 | Improved preparation method of filling body test piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113352431A true CN113352431A (en) | 2021-09-07 |
Family
ID=77537640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110740157.8A Withdrawn CN113352431A (en) | 2021-06-30 | 2021-06-30 | Improved preparation method of filling body test piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113352431A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0862106A (en) * | 1994-08-25 | 1996-03-08 | Seiki Iwayama | Form for test piece, manufacture thereof, and test piece formed by using the form |
| CN105954079A (en) * | 2016-05-12 | 2016-09-21 | 中国地质大学（武汉） | Cementing forming and maintenance method for rock-soil mass model material and improved mold suitable for method |
| CN110039635A (en) * | 2019-04-15 | 2019-07-23 | 南通现代建筑产业发展有限公司 | PC component production technology |
| CN110186740A (en) * | 2019-07-03 | 2019-08-30 | 青岛科技大学 | A kind of single-station paste body filling test material preparation device |
| CN110553898A (en) * | 2019-10-15 | 2019-12-10 | 中国矿业大学(北京) | Cohesive soil sample preparation device for geotechnical test and use method |
-
2021
- 2021-06-30 CN CN202110740157.8A patent/CN113352431A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0862106A (en) * | 1994-08-25 | 1996-03-08 | Seiki Iwayama | Form for test piece, manufacture thereof, and test piece formed by using the form |
| CN105954079A (en) * | 2016-05-12 | 2016-09-21 | 中国地质大学（武汉） | Cementing forming and maintenance method for rock-soil mass model material and improved mold suitable for method |
| CN110039635A (en) * | 2019-04-15 | 2019-07-23 | 南通现代建筑产业发展有限公司 | PC component production technology |
| CN110186740A (en) * | 2019-07-03 | 2019-08-30 | 青岛科技大学 | A kind of single-station paste body filling test material preparation device |
| CN110553898A (en) * | 2019-10-15 | 2019-12-10 | 中国矿业大学(北京) | Cohesive soil sample preparation device for geotechnical test and use method |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210907 |
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| WW01 | Invention patent application withdrawn after publication |