CN108982177B - Forming die structure and forming method of cured mortar test piece - Google Patents
Forming die structure and forming method of cured mortar test piece Download PDFInfo
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- CN108982177B CN108982177B CN201810639770.9A CN201810639770A CN108982177B CN 108982177 B CN108982177 B CN 108982177B CN 201810639770 A CN201810639770 A CN 201810639770A CN 108982177 B CN108982177 B CN 108982177B
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- mortar
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- test piece
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 115
- 238000012360 testing method Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims description 34
- 239000000463 material Substances 0.000 claims description 23
- 210000001503 joint Anatomy 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 230000015271 coagulation Effects 0.000 claims description 3
- 238000005345 coagulation Methods 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000003823 mortar mixing Methods 0.000 abstract description 3
- 239000011440 grout Substances 0.000 description 11
- 239000004567 concrete Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000009435 building construction Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 101100460844 Mus musculus Nr2f6 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
Abstract
The application discloses a forming die structure and a forming method of a cured mortar test piece, wherein a cured mortar forming die is formed by mutually splicing and clamping hoop hoops, the cured mortar forming die can be conveniently assembled and disassembled, water leakage in the cured mortar forming process can be better guaranteed, a formed piece is not broken during demolding, the quality of the cured mortar test piece can be guaranteed, the forming requirement of stability detection of the cured mortar test piece can be met, the optimal mortar mixing ratio can be obtained through repeated forming detection, and a reference process is provided for wall forming construction of a cured mortar impervious wall.
Description
Technical Field
The application relates to the field of building construction, in particular to a forming die structure and a forming method of a cured mortar test piece.
Background
The underground impervious wall has the advantages of reliable structure, small construction vibration, low noise, capability of being close to building construction, small occupied area and the like, and is widely applied to the impervious engineering of the dykes and dams. However, the anti-seepage wall built by adopting rigid materials such as reinforced concrete, plain concrete and fly ash concrete has great difference between the elastic modulus of the anti-seepage wall and the dam or the foundation thereof, the top of the rigid anti-seepage wall is subjected to great pressure due to settlement of the dam or settlement and displacement of the foundation, the side surface is subjected to great friction force, the stress in the anti-seepage wall is higher than the strength of the rigid concrete material, the strain is also larger than the limit strain of the rigid concrete material, the anti-seepage wall is cracked, and the anti-seepage effect is reduced.
In order to solve the problems of the rigid diaphragm wall, the diaphragm wall is built increasingly by adopting flexible materials such as plastic concrete, self-setting mortar, solidified mortar and the like. The elastic modulus of the composite material is much smaller than that of the rigid concrete, so that the composite material can be well adapted to the deformation of the foundation, the stress in the wall body is greatly reduced, and the cracking of the wall body is avoided. The cured mortar is a flexible wall material with low strength, low elasticity and large limit strain, which is prepared by taking the wall protection slurry as a basic slurry material in a built slot hole, adding curing materials such as cement, water glass, fly ash and the like into the basic slurry material, uniformly stirring and curing. Compared with plastic concrete, the setting mortar can select required strength, setting time and mechanical property indexes in a larger range by adjusting the proportion, and compared with self-setting mortar, the setting time is not influenced by pore-forming time.
The method for constructing the underground impervious wall by using the cured mortar has the advantages of simple construction, quick work efficiency, low labor intensity, low cost and the like, but the preparation of the cured mortar and the sampling test of the test piece have no unified regulations and standards, the method can only be carried out by referring to the existing concrete preparation test at present, and the forming die of the cured mortar test piece adopts an assembled iron die or an integrated plastic die with 15cm multiplied by 15cm or a circular integrated plastic die with 15cm diameter and 15cm height. Because the solidified mortar is a fluid material and has large water consumption, when the assembled iron mold is used for molding, water in the solidified mortar flows out from seam gaps of the assembled iron mold, so that the water-cement ratio of the solidified mortar is changed to cause distortion of detection results, and if serious water loss causes collapse of a test piece to cause non-molding. Because the test piece elastic mold is low in deformation, high in strength and easy to crush after the solidified mortar is solidified, the test piece elastic mold is molded by adopting an integrated plastic mold, and when gas is pressed in for demolding, the test piece is not easy to break off when the pressure is small, and the test piece is easy to crush when the pressure is large. Therefore, the existing concrete forming die is difficult to meet the forming requirement of a cured mortar test piece, and is not capable of meeting the stability detection requirement of the cured mortar and the test requirement of the simulated cured mortar construction process.
Disclosure of Invention
The application aims to provide a forming die structure of a cured mortar test piece and a forming method thereof, wherein the forming die structure has good sealing performance and is convenient to demould.
The technical scheme adopted by the application is as follows:
the utility model provides a moulded die structure of solidification mortar test piece, includes two semicircle mould bodies that splice into the drum mould each other, still is equipped with the buckle staple bolt of a plurality of way interval clamps on the drum mould, and the bottom of drum mould is equipped with the bottom and seals, still is equipped with the grout pipe that stretches into drum mould bottom.
Further as an improvement of the technical scheme of the application, the peripheral ends of the bottoms of the two semicircular molds forming the cylindrical mold are inclined and narrowed, the bottom seal is in a disc shape provided with an annular butt joint ring, and the inner periphery of the annular butt joint ring is also narrowed towards the bottom and matched with the outer periphery of the cylindrical mold.
Further as an improvement of the technical scheme of the application, the butt joint of the two semicircular die bodies is provided with convex ribs and grooves matched with each other, and the cross sections of the convex ribs and the grooves are semicircular.
Further as an improvement of the technical scheme of the application, the inner sides of the two semicircular die bodies are provided with a plurality of in-die convex lines which are equidistantly arranged along the length of the semicircular die bodies.
A method of forming a cured mortar test piece, comprising the steps of:
1) The two semicircular mold bodies are butted into a cylindrical mold in a cylindrical shape, a plurality of buckle type anchor clamps are arranged along the length direction of the cylindrical mold to fix the two semicircular mold bodies, a bottom seal is arranged at the bottom of the cylindrical mold for sealing,
2) Calculating the dosage of the two kinds of slurry materials according to the mixing ratio of the basic slurry material and the curing slurry material for forming the curing slurry, and preparing the two kinds of slurry materials;
3) Filling the basic slurry with calculated dosage into a cylindrical mold, and uniformly stirring;
4) Inserting a grouting pipe from the top of the cylindrical mold so that the bottom of the grouting pipe is 2cm from the upper part of the bottom seal,
a grouting funnel is arranged at the top of the grouting pipe;
5) Injecting the curing slurry with calculated dosage into the cylinder mould through the grouting funnel and the grouting pipe, and ensuring that the slurry outlet of the grouting pipe is 30cm below the liquid level of the basic slurry in the cylinder mould in the grouting process until the cylinder mould is fully filled;
6) Uniformly mixing the basic slurry and the solidified slurry in the cylinder mould, and standing for coagulation;
7) After the solidified mortar is solidified into a solidified body and reaches enough strength, the bottom is sealed off, then the buckle type anchor ear is disassembled, and finally the semicircular mould bodies of the two parts are separated, so that the demoulding of the solidified mortar solidified body is completed;
8) Removing the upper part of the solidified mortar concretion, dividing the rest solidified mortar concretion into a plurality of solidified mortar concretion test pieces with the same specification, and curing;
9) After curing the cured mortar concretion test pieces to the designed age, carrying out density and compressive strength test detection on each cured mortar concretion test piece, and calculating the compressive strength and density of each cured mortar concretion test piece so as to calculate the stability of the cured mortar;
10 Repeating the steps to obtain the compressive strength, the density value and the stability of each batch of solidified mortar concretion body test pieces, comparing the required values of design or quality standards, and selecting the optimal solidified mortar proportion meeting the requirements.
Further as an improvement of the technical scheme of the application, in the step 6), the inlet of the grouting pipe is sealed by the palm, the grouting pipe is lifted at the same time, when the grouting pipe is lifted to the position, which is 30cm away from the position below the liquid level of the solidified mortar, of the outlet of the grouting pipe, the palm is removed, the solidified mortar in the grouting pipe is flushed out of the grouting pipe into the cylinder mould, and the grouting pipe is remixed with the solidified mortar in the cylinder mould, and the step is repeated for a plurality of times to realize uniform mixing of the basic mortar and the solidified mortar.
Further as an improvement of the technical scheme of the application, in the step 6), air is pressed in by a compressor to be uniformly mixed.
In step 8), the length of the inner cavity of the cylindrical die is 1 meter, the top 10cm is sawed by a hacksaw, and the rest is divided into six equidistant sections by the hacksaw.
The application has the beneficial effects that: the forming die structure and the forming method of the cured mortar test piece form a cured mortar forming die through mutual splicing and buckling type hoop hoops, the cured mortar forming die can be conveniently assembled and disassembled, water leakage in the cured mortar forming process can be better guaranteed, a formed part is not broken during demolding, the quality of the cured mortar test piece can be guaranteed, the forming requirement of stability detection of the cured mortar test piece can be met, the optimal mortar mixing ratio can be obtained through repeated forming detection, and a reference process is provided for wall forming construction of the cured mortar impervious wall.
Drawings
The application is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic view showing the overall structure of a cured mortar molding die in an embodiment of the application;
FIG. 2 is a schematic diagram of a semicircular mold seam on both sides in an embodiment of the present application.
Detailed Description
Referring to fig. 1 and 2, the application relates to a forming die structure of a solidified mortar test piece, which comprises two semicircular die bodies 1 spliced into a cylindrical die, a plurality of buckle type anchor clamps 2 clamped on the cylindrical die at intervals, a bottom seal 3 arranged at the bottom of the cylindrical die, and a grouting pipe 4 extending into the bottom of the cylindrical die.
In a preferred embodiment of the present application, the outer circumferential ends of the bottoms of the two semicircular molds 1 forming the cylindrical mold are tapered, the bottom seal 3 is in the shape of a disk provided with an annular butt ring, and the inner circumference of the annular butt ring is also tapered toward the bottom and matches the outer circumference of the cylindrical mold.
As a preferred embodiment of the application, the butt joint of the two semicircular mold bodies 1 is provided with a convex rib 11 and a concave groove 12 which are matched with each other, and the cross sections of the convex rib 11 and the concave groove 12 are semicircular.
As a preferred embodiment of the present application, the inner sides of the two semicircular mold bodies 1 are provided with a plurality of in-mold convex lines 13 equidistantly arranged along the length of the semicircular mold bodies 1.
A method of forming a cured mortar test piece, comprising the steps of:
1) The two semicircular mold bodies 1 are butted into a cylindrical mold, a plurality of buckle type anchor clamps 2 are arranged along the length direction of the cylindrical mold to fix the two semicircular mold bodies 1, a bottom seal 3 is arranged at the bottom of the cylindrical mold for sealing,
2) Calculating the dosage of the two kinds of slurry materials according to the mixing ratio of the basic slurry material and the curing slurry material for forming the curing slurry, and preparing the two kinds of slurry materials;
3) Filling the basic slurry with calculated dosage into a cylindrical mold, and uniformly stirring;
4) Inserting the grouting pipe 4 from the top of the cylindrical mold such that the bottom of the grouting pipe 4 is 2cm from the upper part of the bottom seal 3, and installing a grouting funnel 5 at the top of the grouting pipe 4;
5) Injecting the curing slurry with calculated dosage into the cylinder mould through the grouting funnel 5 and the grouting pipe 4, and ensuring that the slurry outlet of the grouting pipe 4 is 30cm below the liquid level of the basic slurry in the cylinder mould in the grouting process until the cylinder mould is full;
6) Uniformly mixing the basic slurry and the solidified slurry in the cylinder mould, and standing for coagulation;
7) After the solidified mortar is solidified into a solidified body and reaches enough strength, removing the bottom seal 3, disassembling the buckle type anchor ear 2, and finally separating the semicircular mold bodies 1 of the two parts to finish the demolding of the solidified mortar solidified body;
8) Removing the upper part of the solidified mortar concretion, dividing the rest solidified mortar concretion into a plurality of solidified mortar concretion test pieces with the same specification, and curing;
9) After curing the cured mortar concretion test pieces to the designed age, carrying out density and compressive strength test detection on each cured mortar concretion test piece, and calculating the compressive strength and density of each cured mortar concretion test piece so as to calculate the stability of the cured mortar;
10 Repeating the steps to obtain the compressive strength, the density value and the stability of each batch of solidified mortar concretion body test pieces, comparing the required values of design or quality standards, and selecting the optimal solidified mortar proportion meeting the requirements.
In step 6), as a preferred embodiment of the present application, the inlet of the grout tube 4 is sealed with a palm while the grout tube 4 is lifted up, and when the grout tube 4 is lifted up to a position 30cm below the surface of the cured grout, the palm is removed, the cured grout in the grout tube 4 is flushed out of the grout tube 4 into the cylinder mold and is re-mixed with the cured grout in the cylinder mold, and this step is repeated a plurality of times to achieve uniform mixing of the base grout and the cured grout.
In a preferred embodiment of the present application, in step 6), the air is compressed by a compressor to uniformly mix.
In step 8), the length of the inner cavity of the cylindrical die is 1 m, and after the top 10cm is sawed by a hacksaw, the rest is divided into six equidistant sections by the hacksaw.
The forming die structure and the forming method of the cured mortar test piece form a cured mortar forming die through mutual splicing and the clamping type hoop 2 hoops, the cured mortar forming die can be conveniently assembled and disassembled, water leakage in the cured mortar forming process can be better guaranteed, the formed piece is not broken during demolding, the quality of the cured mortar test piece can be guaranteed, the forming requirement of stability detection of the cured mortar test piece is met, the optimal mortar mixing ratio can be obtained through repeated forming detection, and a reference process is provided for wall forming construction of the cured mortar impervious wall.
The inside of the cured mortar forming die is cylindrical, and the cylindrical die formed by splicing the two semicircular die bodies 1 is the cured mortar forming die. The butt joint of the two semicircular mold bodies 1 is provided with the convex ribs 11 and the grooves 12 which are matched with each other, after the two semicircular mold bodies 1 are in butt joint and splicing, the convex ribs 11 on the side wall of the semicircular mold body 1 are embedded into the grooves 12 on the side wall of the other semicircular mold body 1 to form a seal, so that the leakage of the solidified mortar in the solidified mortar forming mold can be prevented. The in-mold convex lines 13 arranged on the inner side of the semicircular mold bodies 1 can form annular convex lines in the solidified mortar forming mold after the two semicircular mold bodies 1 are in butt joint and splicing, so that after solidified mortar forms a solidified body, a plurality of annular concave rings are formed on the surface of the solidified body, and the solidified mortar solidified body can be conveniently cut and segmented.
The solidified mortar is poured into a solidified mortar forming die through a grouting funnel 5 and a grouting pipe 4, then the solidified mortar mixed by basic mortar materials and solidified mortar materials in the solidified mortar forming die is uniformly mixed by adopting an air pressure or stirring method, after the solidified mortar is solidified into a mortar concretion body, the solidified mortar forming die is removed, six solidified mortar concretion body test pieces with the diameter of 150mm and the height of 150mm are sawn by a steel saw along a concave ring of the mortar concretion body, the subsequent compressive strength and stability test detection is carried out, the density difference of the concretion body is detected, the design or quality standard ideal ratio is judged, and the optimal solidified mortar proportion is determined by a plurality of tests, so that a reference process can be provided for the wall forming construction of the solidified mortar impervious wall.
The present application is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the application, and these equivalent modifications or substitutions are intended to be included in the scope of the present application as defined in the appended claims.
Claims (4)
1. A molding method using a cured mortar test piece molding die structure, comprising the steps of:
1) The forming die structure comprises two semicircular die bodies which are mutually spliced to form a cylindrical die, the two semicircular die bodies are in butt joint to form a cylindrical die, the forming die structure is provided with a plurality of buckle type anchor clamps which are clamped on the cylindrical die at intervals, the two semicircular die bodies are fixed by installing a plurality of buckle type anchor clamps along the length direction of the cylindrical die, the bottom of the cylindrical die is provided with a bottom seal, the bottom of the cylindrical die is provided with the bottom seal for sealing, the inner sides of the two semicircular die bodies are provided with a plurality of in-die convex lines which are equidistantly arranged along the length of the semicircular die body, and the length of an inner cavity of the cylindrical die is 1 meter;
2) Calculating the dosage of the two kinds of slurry materials according to the mixing ratio of the basic slurry material and the curing slurry material for forming the curing slurry, and preparing the two kinds of slurry materials;
3) Filling the calculated amount of the basic slurry into a cylindrical mold, and uniformly stirring;
4) The forming die structure comprises a grouting pipe extending into the bottom of the cylindrical die, the grouting pipe is inserted from the top of the cylindrical die, the distance between the bottom of the grouting pipe and the upper part of the bottom seal is 2cm, and a grouting funnel is arranged at the top of the grouting pipe;
5) Injecting the curing slurry with calculated dosage into the cylinder mould through the grouting funnel and the grouting pipe, and ensuring that the slurry outlet of the grouting pipe is 30cm below the liquid level of the basic slurry in the cylinder mould in the grouting process until the cylinder mould is fully filled;
6) Sealing the inlet of the grouting pipe by using a palm, lifting the grouting pipe at the same time, when the outlet of the grouting pipe is lifted to be 30cm below the liquid level of the solidified mortar, removing the palm, flushing the solidified mortar in the grouting pipe out of the grouting pipe into a cylindrical mold, and remixing the solidified mortar with the solidified mortar in the cylindrical mold, repeating the steps for a plurality of times to realize uniform mixing of the basic mortar and the solidified mortar, uniformly mixing the basic mortar and the solidified mortar in the cylindrical mold, and standing for coagulation;
7) After the solidified mortar is solidified into a solidified body and reaches enough strength, the bottom is sealed off, then the buckle type anchor ear is disassembled, and finally the semicircular mould bodies of the two parts are separated, so that the demoulding of the solidified mortar solidified body is completed;
8) Removing the upper part of the solidified mortar concretion, dividing the rest solidified mortar concretion into a plurality of solidified mortar concretion test pieces with the same specification, and curing;
9) After curing the cured mortar concretion test pieces to the designed age, carrying out density and compressive strength test detection on each cured mortar concretion test piece, and calculating the compressive strength and density of each cured mortar concretion test piece so as to calculate the stability of the cured mortar;
10 Repeating the steps to obtain the compressive strength, the density value and the stability of each batch of solidified mortar concretion body test pieces, comparing the required values of design or quality standards, and selecting the optimal solidified mortar proportion meeting the requirements.
2. The molding method using a cured mortar test piece molding die structure according to claim 1, wherein: the outer circumferential ends of the bottoms of the two semicircular mold bodies forming the cylindrical mold are obliquely narrowed, the bottom seal is disc-shaped provided with an annular butt joint ring, and the inner circumference of the annular butt joint ring is also narrowed toward the bottoms and matched with the outer circumference of the cylindrical mold.
3. The molding method using a cured mortar test piece molding die structure according to claim 1, wherein: the butt joint of the two semicircular die bodies is provided with convex ribs and grooves matched with each other, and the cross sections of the convex ribs and the grooves are semicircular.
4. The molding method using a cured mortar test piece molding die structure according to claim 1, wherein: in step 8), after sawing the top 10cm by a hacksaw, the remainder was divided into six equidistant segments by the hacksaw.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810639770.9A CN108982177B (en) | 2018-06-20 | 2018-06-20 | Forming die structure and forming method of cured mortar test piece |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810639770.9A CN108982177B (en) | 2018-06-20 | 2018-06-20 | Forming die structure and forming method of cured mortar test piece |
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| CN108982177A CN108982177A (en) | 2018-12-11 |
| CN108982177B true CN108982177B (en) | 2023-10-31 |
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| CN108982177A (en) | 2018-12-11 |
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