CN215065660U - Cement mortar cushion block strength detection forming test mold - Google Patents
Cement mortar cushion block strength detection forming test mold Download PDFInfo
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- CN215065660U CN215065660U CN202120669846.XU CN202120669846U CN215065660U CN 215065660 U CN215065660 U CN 215065660U CN 202120669846 U CN202120669846 U CN 202120669846U CN 215065660 U CN215065660 U CN 215065660U
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Abstract
The utility model discloses a cement mortar cushion intensity detects shaping examination mould, top cover die, increased pressure plate and pressurization head structure, the lower part is the pressure that can bear examination mould of cast steel thickening material, during the use, fixes the cover die at examination mould top, goes into production cushion and uses cement mortar in examination mould and cover die, installs increased pressure plate and pressurization head at the top, utilizes the press to extrude into examination mould with the mortar in the cover die in, accomplishes and detect the test block shaping for intensity. The utility model also provides an intensity detection method of using above-mentioned shaping examination mould simulation cushion processing operating mode shaping standard to detect the test block. Compared with the prior art, the utility model discloses can the actual strength of accurate test cement mortar cushion to have convenient to use, experimental efficient advantage of testing.
Description
Technical Field
The utility model discloses the civil engineering field specifically is a cement mortar cushion intensity detects shaping examination mould.
Background
The requirements for the thickness and the appearance quality of a protective layer of a structure are gradually improved in the construction of bridges and culverts in recent years, and in order to meet the requirement for accurately controlling the protective layer, a cement mortar cushion block is generally used for controlling. According to technical Specification for construction of highway bridges and culverts JTG/T3650-2020, the concrete cushion block is required to have strength not lower than that of concrete of the structural body and sufficient compactness. This requires that when the cement cushion block is manufactured, the cushion block not only satisfies the use strength but also reaches the strength of the use part, and when the high-grade structure part is used, the cushion block still satisfies the higher strength requirement.
The traditional cement cushion block production process mainly adopts high-grade cement mortar for pressing, but the produced cushion block is irregular in shape and small in size, an entity is adopted for carrying out a strength test, no specific conversion coefficient exists, and the actual strength of the cushion block can not be accurately reflected only through the strength calculated by pressure and stress area. That is, the actual strength of the cement mortar cushion block cannot be accurately detected in the prior art. The water cement ratio of the cement mortar is controlled between 0.22 and 0.25 when the cement mortar cushion block is constructed, the mixed cement mortar is in a loose state, and the low-water cement ratio mortar cannot be directly loaded into a test mold without uniform pressure application during strength detection, so that the compactness of the test block cannot be ensured.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cement mortar cushion intensity detects shaping examination mould, compares with prior art, the utility model discloses can accurately test the actual strength of cement mortar cushion to have convenient to use, experimental efficient advantage of testing.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cement mortar cushion intensity detects shaping examination mould, includes: the test die is a test die with a bottom, a clamping strip is arranged on the outer side of the covering film and fixed at the top end of the test die, the pressurizing plate is arranged in the test die, and the pressurizing head is positioned above the pressurizing plate;
the trial mold comprises: the long test mold side plate, the short test mold side plate, the test mold nut, the test mold bolt and the fastening bolt, wherein the test mold can be decomposed and disassembled into the long test mold side plate and the two short test mold side plates, the two short test mold side plates are respectively inserted into the clamping grooves of the long test mold side plates on the two sides, the two ends of the long test mold side plate are fastened through the test mold nut and the test mold bolt, the middle part of the test mold bolt is provided with a hole, the fastening bolt passes through the hole and is fixed with the test mold bottom plate, and the test mold forms a cube with the inner dimension of 70.7mm multiplied by 70.7 mm;
the cover film comprises: the inner size of the covering film is the same as that of the test mold, the height of the covering film is half of that of the test mold, the covering film is divided into two short covering film side plates and two long covering film side plates, the short covering film side plates are respectively inserted into the clamping grooves of the long covering film side plates at two sides, and the two ends of the long covering film side plates 203 are fastened through the covering film nuts and the covering film bolts;
the pressurizing plate includes: the cross section of the pressurizing plate is square, and the gap between the pressurizing plate and the inner size of the test mold is 1 mm; the pressure head is a cylinder, and the total height of the stroke of the pressure plate and the pressure head is 50 mm.
Preferably, two sides of the covering film are respectively provided with a clamping strip, and the covering film is limited above the test mold 1 through the clamping strips.
Preferably, the thickness of the pressing plate is 10 mm.
Preferably, the diameter of the pressure head is 55mm, and the height is 40 mm.
Preferably, the test mold and the mantle film are manufactured by thickened cast steel.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the test mould size and the formed test block meet the requirements of 'standard of basic performance test method of building mortar' (JGJ/T70-2009).
2. The molding working condition of the cement mortar cushion block is completely simulated.
3. The difficulty that the produced cushion block is irregular in shape and the actual strength is difficult to detect is overcome, and the strength of the cement mortar cushion block can be accurately detected.
4. The test method is specific, easy to operate and capable of realizing rapid molding, meets the requirement of sampling at any time and molding test blocks at any time, and is convenient for guiding production.
Drawings
FIG. 1 is a schematic view of the overall structure of the cement mortar cushion block strength detection molding test mold of the present invention;
FIG. 2 is a schematic view of a test mold structure of the cement mortar cushion block strength detection molding test mold of the present invention;
FIG. 3 is a schematic diagram of the film structure of the molding test mold for detecting the strength of the cement mortar cushion block of the present invention;
figure 4 is the utility model discloses cement mortar cushion intensity detects pressure plate structure schematic diagram of shaping examination mould.
In the figure: 1. the method comprises the following steps of testing a mould, 2, coating, 3, a pressurizing plate, 4, a pressurizing head, 101, a long testing mould side plate, 102, a short testing mould side plate, 103, a testing mould nut, 104, a testing mould bolt, 105, a fastening bolt, 201, a clamping strip, 202, a short coating mould side plate, 203, a long coating mould side plate, 204, a coating mould nut, 205, a coating mould bolt, 301, a pressurizing plate surface, 302 and a bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a cement mortar cushion intensity detects shaping examination mould, includes: the test device comprises a test die 1, a covering film 2, a pressurizing plate 3 and a pressurizing head 4, wherein the test die 1 is a test die with a bottom, a clamping strip 201 is arranged on the outer side of the covering film 2 and fixed at the top end of the test die 1, the pressurizing plate 3 is arranged in the test die 1, and the pressurizing head 4 is positioned above the pressurizing plate 3;
the trial mold 1 includes: the long test mold comprises a long test mold side plate 101, a short test mold side plate 102, a test mold nut 103, a test mold bolt 104 and a fastening bolt 105, wherein a test mold 1 can be disassembled into the long test mold side plate 101 and two short test mold side plates 102, the two short test mold side plates 102 are respectively inserted into clamping grooves of the long test mold side plates 101 on two sides, two ends of the long test mold side plate 101 are fastened through the test mold nut 103 and the test mold bolt 104, a hole is formed in the middle of the test mold bolt 104, the fastening bolt 105 passes through the hole and is fixed with a test mold bottom plate, and the test mold 1 forms a cube with the inner size of 70.7mm multiplied by 70.7 mm;
the cover film 2 comprises: the inner size of the covering film 2 is the same as that of the test mold 1, the height of the covering film 2 is half of that of the test mold 1, the covering film 2 is divided into two short covering film side plates 202 and two long covering film side plates 203, the short covering film side plates 202 are respectively inserted into the clamping grooves of the long covering film side plates 203 on two sides, and two ends of the long covering film side plates 203 are fastened through the covering film nuts 204 and the covering film bolts 205;
the pressurizing plate 3 includes: the cross section of the pressurizing plate 3 is square, and the gap between the pressurizing plate and the inner part of the test mold 1 is 1 mm; the pressurizing head 4 is a cylinder, and the total stroke height of the pressurizing plate 3 and the pressurizing head 4 is 50 mm.
Two sides of the covering film 2 are respectively provided with a clamping strip 201, and the covering film 2 is limited above the test mold 1 through the clamping strips 201.
The thickness of the pressing plate 3 was 10 mm.
The diameter of the pressure head 4 is 55mm and the height thereof is 40 mm.
The test die 1 and the mantle 2 are made of thickened cast steel.
Use the utility model provides a detection method of intensity detection shaping examination mould: in order to achieve the purpose of forming the size of a standard test block by applying pressure, the test block is required to be formed in an extrusion state, the test block with the strength to be detected is manufactured according to the compression ratio of a construction cushion block, and meanwhile, the pressure born by the formed test block is the same as the pressure born by an actually produced cushion block and the compactness is the same; the thickness of the cushion block forming die is required to be 1.5 times of that of the actual pressing cushion block, so that the internal dimension of the test die 1 is a cube of 70.7mm × 70.7mm × 70.7mm, the height of the covering film 2 is half of that of the test die 1, and the height of the combined test die 1 and covering film 2 meets the compression ratio of actual production.
The method specifically comprises the following steps:
accurately weighing the weights of 15-20 actual production cushion blocks, calculating the unit volume weight of the cushion blocks by taking the average value, and taking the calculated result as the reference unit volume weight of the controlled quantity of the material loaded into the test mold 1;
uniformly coating grease on the test mold 1, the covering film 2 and the pressurizing plate 3, assembling and molding the test mold 1 and the covering film 2, and fixing the covering film 2 at the top end of the test mold 1;
taking materials on site, taking mortar according to twice the volume weight of the number of the test blocks to be pressed, accurately weighing the sampled mortar according to the weight of each test block, and discarding the rest;
the weighed mortar is loaded into a test mold 1 and a sleeve mold 2 in two layers, a pressurizing plate can be used for lightly pressing in the mold loading process to ensure that the weighed mortar is completely injected into the mold, the pressurizing plate 3 and a pressurizing head 4 are installed at the top, and the pressurizing head 4 is placed at the center of the test mold 1;
placing the whole set of device with the mixed mortar on a press machine, starting the press machine to pressurize at uniform speed, ensuring that the mortar in the mantle 2 is uniformly extruded into a test mold, and finally enabling the size of the test block to reach the size of a test block with standard mortar strength detection after holding the load;
and (3) dismantling all components of the test mold 1, avoiding collision in the operation process, placing the formed test block in a standard maintenance box for standard maintenance, and detecting the strength when the test block reaches the end of the life.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a cement mortar cushion intensity detects shaping examination mould, includes: the test device comprises a test die (1), a covering film (2), a pressurizing plate (3) and a pressurizing head (4), and is characterized in that the test die (1) is a test die with a bottom, a clamping strip (201) is arranged on the outer side of the covering film (2) and fixed at the top end of the test die (1), the pressurizing plate (3) is arranged inside the test die (1), and the pressurizing head (4) is positioned above the pressurizing plate (3);
the trial mold (1) comprises: the long test mold comprises a long test mold side plate (101), a short test mold side plate (102), a test mold nut (103), a test mold bolt (104) and a fastening bolt (105), wherein a test mold (1) can be disassembled into the long test mold side plate (101) and two short test mold side plates (102), the two short test mold side plates (102) are respectively inserted into clamping grooves of the long test mold side plates (101) on two sides, two ends of the long test mold side plate (101) are fastened through the test mold nut (103) and the test mold bolt (104), a hole is formed in the middle of the test mold bolt (104), the fastening bolt (105) passes through the hole and is fixed with a test mold bottom plate, and a cube with the internal dimension of 70.7mm multiplied by 70.7mm is formed by the test mold (1);
the cover film (2) comprises: the test device comprises a clamping strip (201), short film sleeving side plates (202), long film sleeving side plates (203), film sleeving nuts (204) and film sleeving bolts (205), wherein the inner size of a film sleeving (2) is the same as that of a test mold (1), the height of the film sleeving (2) is half of that of the test mold (1), the film sleeving (2) is divided into two short film sleeving side plates (202) and two long film sleeving side plates (203), the short film sleeving side plates (202) are respectively inserted into clamping grooves of the long film sleeving side plates (203) on two sides, and two ends of each long film sleeving side plate (203) are fastened through the film sleeving nuts (204) and the film sleeving bolts (205);
the pressing plate (3) includes: the cross section of the pressurizing plate (3) is square, and the gap between the pressurizing plate and the inner size of the test mold (1) is 1 mm; the pressurizing head (4) is a cylinder, and the total stroke height of the pressurizing plate (3) and the pressurizing head (4) is 50 mm.
2. The cement mortar cushion block strength detection forming test mold as claimed in claim 1, characterized in that: the two sides of the covering film (2) are respectively provided with a clamping strip (201), and the covering film (2) is limited above the test mold (1) through the clamping strips (201).
3. The cement mortar cushion block strength detection forming test mold as claimed in claim 1, characterized in that: the thickness of the pressure plate (3) is 10 mm.
4. The cement mortar cushion block strength detection forming test mold as claimed in claim 1, characterized in that: the diameter of the pressurizing head (4) is 55mm, and the height of the pressurizing head is 40 mm.
5. The cement mortar cushion block strength detection forming test mold as claimed in claim 1, characterized in that: the test die (1) and the sleeve film (2) are processed and manufactured by thickened cast steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120669846.XU CN215065660U (en) | 2021-04-01 | 2021-04-01 | Cement mortar cushion block strength detection forming test mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120669846.XU CN215065660U (en) | 2021-04-01 | 2021-04-01 | Cement mortar cushion block strength detection forming test mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215065660U true CN215065660U (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120669846.XU Active CN215065660U (en) | 2021-04-01 | 2021-04-01 | Cement mortar cushion block strength detection forming test mold |
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| CN (1) | CN215065660U (en) |
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2021
- 2021-04-01 CN CN202120669846.XU patent/CN215065660U/en active Active
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