A cement mortar curing box

Abstract

This utility model discloses a cement mortar curing box, belonging to the technical field of special tools for cement mortar laboratories. It includes a curing box body, a first positioning component, a second positioning component, and a thermometer monitoring device. The curing box body is formed by enclosing an acrylic sheet, with a liquid level gauge engraved on the outer wall. The first and second positioning components are connected by multiple specimen positioning fixtures to define the position of the specimens within the curing box. The temperature detection device is located on the inner wall of the curing box. The design of the specimen positioning fixtures in this utility model places each specimen in an independent position, ensuring a minimum 5mm gap between specimens and between the specimens and the inner wall of the curing box. The transparent acrylic sheet body, the temperature monitoring device on the inner wall, and the liquid level gauge engraved on the outer wall facilitate convenient and quick monitoring and recording of water temperature and observation of water level.

Description

Technical Field

[0001] This utility model relates to the technical field of special tools for cement mortar testing laboratories, specifically a cement mortar curing box. Background Technology

[0002] The core purpose of the ISO test for cement mortar strength is to determine the flexural and compressive strength of cement to assess its strength grade or verify whether it meets the standard requirements. It also provides a basis for cement quality control, production process optimization, and engineering applications. Currently, the standard method for this test is GB / T 17671-2021, "Test Method for Cement Mortar Strength (ISO Method)". The standard method specifies the use of 40mm×40mm×160mm prism specimens, requiring the specimens to be placed horizontally or vertically in water at 20℃±1℃ for curing, ensuring water contact with all six faces of the specimen. During curing, the interval between specimens or the water depth on the upper surface of the specimen should not be less than 5mm, and the water temperature should be recorded at least once a day.

[0003] Currently, commonly used curing containers include curing boxes that can hold six standard specimens of 40mm×40mm×160mm. When using existing specimen curing boxes for curing, inaccurate control of the placement of the specimens after they are placed in the curing container or displacement of the specimens during transportation can easily lead to the surfaces of the specimens being in close contact or the surface of the specimens being in close contact with the inside of the curing box. This fails to meet the standard requirement that water contact all six sides of the specimens during the curing period or that the interval between specimens should not be less than 5mm, thus affecting the accuracy of cement mortar strength testing. Utility Model Content

[0004] The purpose of this utility model is to provide a cement mortar curing box to solve the problems mentioned in the background art, such as the impact of tight contact between the surfaces of the specimens or tight contact between the surface of the specimens and the inner side of the curing box on the accuracy of cement mortar strength testing.

[0005] To achieve the above objectives, this utility model provides a cement mortar curing box, including a specimen curing box body, a first positioning component, and a temperature monitoring device, wherein the specimen curing box body serves as a container for curing cement mortar specimens. The first positioning component is disposed inside the specimen curing box. The first positioning component includes a specimen positioning fixture, which is used to confine the specimen to be cured to a predetermined position within the specimen curing box. The specimen positioning fixture includes a first positioning part, a second positioning part, a third positioning part, and a fourth positioning part. The first positioning part is located outside the first side of the specimen to be cured and is used to restrict the movement of the specimen to be cured towards the first positioning part. The second positioning part is located outside the second side of the specimen to be cured and is used to restrict the movement of the specimen to be cured towards the second positioning part. The third positioning part is located outside the third side of the specimen to be cured and is used to restrict the movement of the specimen to be cured towards the third positioning part. The fourth positioning part is located outside the fourth side of the specimen to be cured and is used to restrict the movement of the specimen to be cured towards the fourth positioning part. A temperature monitoring device is fixedly installed on the inner wall of the specimen curing box.

[0006] Furthermore, the first positioning part, the second positioning part, and the third positioning part are all elongated acrylic sheets, and the fourth positioning part includes a first end section and a second end section. Both the first end section and the second end section are rectangular acrylic sheets. One end of the first positioning part is fixedly connected to one end of the second positioning part, and the other end of the first positioning part is fixedly connected to one end of the third positioning part. The other end of the second positioning part is fixedly connected to one end of the first end section, and the other end of the third positioning part is fixedly connected to one end of the second end section, so that the other ends of the first end section and the other ends of the second end section are arranged opposite to each other.

[0007] Furthermore, a groove is provided on the first positioning part, the opening of the groove faces the side of the specimen to be cured, the groove is located in the middle of the side of the first positioning part near the specimen to be cured, and the width of the groove is less than the length of the first positioning part plate on the side near the specimen to be cured.

[0008] Furthermore, the specimen positioning fixture also includes an auxiliary strip, which engages with the groove. During the curing period, the auxiliary strip can be removed to increase the contact area between the specimen to be cured and the water.

[0009] Furthermore, the first positioning component includes multiple specimen positioning fixtures, the number of which is even. The multiple specimen positioning fixtures are arranged in two rows of equal number. Each specimen positioning fixture in the same row is aligned by the outer edge of its first positioning part, and adjacent specimen positioning fixtures are fixedly connected by their respective second and third positioning parts. The two rows of specimen positioning fixtures are fixedly connected by the outer edge of their respective first positioning parts.

[0010] Furthermore, the number of specimen positioning fixtures is six.

[0011] Furthermore, the cement mortar curing box also includes a second positioning component, the structure of which is the same as that of the first positioning component. The first positioning component is located in the upper region inside the specimen curing box, and the second positioning component is located in the lower region inside the specimen curing box.

[0012] Furthermore, the specimen curing box is formed by enclosing a transparent acrylic sheet. The top of the specimen curing box is an open structure, and the inner sidewall of the specimen curing box is provided with a stepped support structure. The stepped support structure includes an upper support structure and a lower support structure spaced apart along the height direction of the inner sidewall of the specimen curing box. The upper support structure is located in the area near the opening of the specimen curing box, and the lower support structure is located in the area near the bottom of the specimen curing box. The first positioning component is detachably supported and fixed on the upper support structure, and the second positioning component is detachably supported and fixed on the lower support structure.

[0013] Furthermore, a liquid level gauge is engraved on the outer side of the specimen curing box, extending along the depth direction of the specimen curing box.

[0014] This utility model has the following advantages over the prior art:

[0015] 1. This utility model, through the design of the specimen positioning fixture, forcibly fixes the specimens to be cured in an independent space, ensuring that there is always a gap of at least 5mm between the specimens to be cured and between the specimens to be cured and the inner wall of the specimen curing box. This ensures that the requirements of standard GB / T17671-2021 regarding specimen spacing are met during the curing period. At the same time, it can effectively prevent the specimens from shifting, sliding, tilting or colliding with each other during handling, water changing or other operations, avoiding the problem of insufficient spacing caused by specimen damage or position changes.

[0016] 2. This utility model uses a specimen curing box made of transparent acrylic sheet material, and a temperature monitoring device that is directly fixed to the inner side wall of the specimen curing box, which facilitates and quickly monitors and records the water temperature; the outer side of the specimen curing box is engraved with a liquid level gauge extending along the depth direction, which allows for intuitive and quick observation of the water level inside the specimen curing box, ensuring that the standard requirement of "the water depth on the upper surface of the specimen is not less than 5mm" is conveniently and continuously monitored and maintained. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention;

[0018] Figure 2 This is a top sectional view of the present invention;

[0019] Figure 3This is a schematic diagram of the structure of the specimen positioning tool of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1—Specimen curing box body; 11—Stepped support structure; 12—Upper support structure;

[0022] 13—Lower support structure; 14—Liquid level gauge; 2—First positioning component;

[0023] 21—Specimen positioning fixture; 22—First positioning part; 23—Second positioning part;

[0024] 24—Third positioning section; 25—Fourth positioning section; 26—First end section;

[0025] 27—Second end section; 28—Auxiliary strip; 3—Temperature monitoring device;

[0026] 4—Second positioning component. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] like Figures 1 to 3As shown, an embodiment of this utility model provides a cement mortar curing box, including a specimen curing box body 1, a specimen positioning fixture 2, and a temperature monitoring device 3. The specimen curing box body 1 serves as a container for curing cement mortar specimens. The first positioning component 2 is disposed inside the specimen curing box 1. The first positioning component 2 includes a specimen positioning fixture 21, which is used to limit the specimen to be cured to a predetermined position inside the specimen curing box 1. The specimen positioning fixture 21 includes a first positioning part 22, a second positioning part 23, a third positioning part 24, and a fourth positioning part 25. The first positioning part 22 is located outside the first side of the specimen to be cured and is used to restrict the movement of the specimen to be cured toward the first positioning part 22. The second positioning part 23 is located outside the second side of the specimen to be cured and is used to restrict the movement of the specimen to be cured toward the second positioning part 23. The third positioning part 24 is located outside the third side of the specimen to be cured and is used to restrict the movement of the specimen to be cured toward the third positioning part 24. The fourth positioning part 25 is located outside the fourth side of the specimen to be cured and is used to restrict the movement of the specimen to be cured toward the fourth positioning part 25. Temperature monitoring device 3 is fixedly installed on the inner side wall of the specimen curing box 1.

[0029] In this embodiment, the specimen positioning fixture 21 is designed to forcibly fix the specimens to be cured in an independent space, ensuring that there is always a gap of at least 5mm between the specimens and between the specimens and the inner wall of the specimen curing box 1. This meets the requirements of standard GB / T17671-2021 regarding specimen spacing during curing. Simultaneously, it effectively prevents the specimens from shifting, sliding, tilting, or colliding during handling, water changes, or other operations, avoiding potential damage or insufficient spacing caused by positional changes. The specimen curing box 1, made of transparent acrylic sheet, is used in conjunction with a temperature monitoring device 3 directly fixed to the inner wall of the specimen curing box 1, allowing for convenient and quick monitoring and recording of water temperature.

[0030] The first positioning part 22, the second positioning part 23, and the third positioning part 24 are all elongated acrylic sheets. The fourth positioning part 25 includes a first end section 26 and a second end section 27. Both the first end section 26 and the second end section 27 are rectangular acrylic sheets. One end of the first positioning part 22 is fixedly connected to one end of the second positioning part 23, and the other end of the first positioning part 22 is fixedly connected to one end of the third positioning part 24. The other end of the second positioning part 23 is fixedly connected to one end of the first end section 26, and the other end of the third positioning part 24 is fixedly connected to one end of the second end section 27, so that the other ends of the first end section 26 and the other ends of the second end section 27 are arranged opposite to each other. In this embodiment, the design of the specimen positioning fixture 21 formed by the first positioning part 22, the second positioning part 23, the third positioning part 24, the first end section 26, and the second end section 27 allows the specimen to be cured to be located in an independent space, preventing the side of the specimen from being in close contact with the wall of the specimen curing box 1, and providing protection for the side of the specimen close to the specimen curing box 1 to come into contact with water.

[0031] like Figure 2 As shown, a groove is provided on the first positioning part 22, with the groove opening facing the side of the specimen to be cured. The groove is located in the middle of the first positioning part 22 near the specimen to be cured, and the width of the groove is less than the length of the first positioning part 22 plate near the specimen to be cured. The specimen positioning fixture 21 also includes an auxiliary strip 28, which engages with the groove. In this embodiment, before placing the specimen to be cured into the specimen curing box 1, the auxiliary strip 23 can be engaged in the groove on the first positioning part 22, thereby enhancing the stability of the specimen positioning fixture 21 structure and preventing bending at narrow points of the specimen positioning fixture 21. The auxiliary strip 28 can be bound with thin thread or iron wire, so that it can be removed during specimen curing to increase the contact area between the specimen and water.

[0032] The first positioning component 2 includes multiple specimen positioning fixtures 21, the number of which is even. These fixtures are arranged in two rows, with each row containing the same number of fixtures. Fixtures 21 in the same row are aligned by the outer edge of their first positioning portion 22, and adjacent fixtures 21 are fixedly connected by their respective second positioning portions 23 and third positioning portions 24. The two rows of fixtures 21 are also fixedly connected by the outer edge of their respective first positioning portions 22. In this embodiment, there are six specimen positioning fixtures 21. By splicing two sets of fixtures 21, a first positioning component 2 with a symmetrical structure is formed. This design avoids the need to distinguish between the front and back when installing the first positioning component 2 into the specimen preservation box 1, simplifying the installation process. Furthermore, it allows six standard-sized specimens to be accommodated within the same specimen preservation box 1 using the specimen positioning fixtures 2, with each specimen meeting the required standard spacing.

[0033] The cement mortar curing box also includes a second positioning component 4. The structure of the second positioning component 4 is the same as that of the first positioning component 2. The first positioning component 2 is located in the upper region inside the specimen curing box body 1, and the second positioning component 4 is located in the lower region inside the specimen curing box body 1. In this embodiment, the upper and lower positioning components 2 and 4 effectively limit the displacement and swaying of the specimen within the specimen curing box body 1. This avoids the situation where, with only one first positioning component 2, the specimen tilts during handling or water changing, leading to contact between specimens or between the specimens and the inner wall of the specimen curing box body 1.

[0034] The specimen curing box 1 is formed by enclosing a transparent acrylic sheet. The top of the specimen curing box 1 is open. The inner sidewall of the specimen curing box 1 is provided with a stepped support structure 11. The stepped support structure 11 includes an upper support structure 12 and a lower support structure 13 spaced apart along the height direction of the inner sidewall of the specimen curing box 1. The upper support structure 12 is located in the area near the opening of the specimen curing box 1, and the lower support structure 13 is located in the area near the bottom of the specimen curing box 1. In this embodiment, the first positioning component 2 is detachably supported and fixed on the upper support structure 12, and the second positioning component 4 is detachably supported and fixed on the lower support structure 13. The detachable structural design facilitates daily cleaning of the specimen curing box 1 and replacement of the first positioning component 2 and the second positioning component 4 when damaged.

[0035] A liquid level gauge 14 is engraved on the outer surface of the specimen curing box 1, extending along the depth direction of the specimen curing box 1. In this embodiment, by engraving the liquid level gauge 14 on the outer surface of the specimen curing box 1, which is made of transparent acrylic sheet, the operator can better observe the water level inside the specimen curing box 1 during specimen curing, so as to add water in time when the water level is low, and maintain the curing condition that the water depth on the upper surface of the specimen is not less than 5mm during the curing period.

[0036] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "upper" and "lower" and "top" and "bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0037] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0038] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A cement mortar curing box for holding a specimen to be cured, wherein the specimen is a quadrangular prism structure with a square base, characterized in that, include: Test specimen preservation box body (1); A first positioning component (2) is disposed inside the specimen preservation box body (1). The first positioning component (2) includes a specimen positioning fixture (21), which is used to limit the specimen to be preserved to a predetermined position inside the specimen preservation box body (1). The specimen positioning fixture (21) includes a first positioning part (22), a second positioning part (23), a third positioning part (24), and a fourth positioning part (25). The first positioning part (22) is located outside the first side of the specimen to be preserved, and the first positioning part (22) is used to restrict the specimen to be preserved from moving towards the first side. The movement of the first positioning part (22) is restricted by the second positioning part (23) located on the outside of the second side of the specimen to be cured, and the second positioning part (23) is used to restrict the movement of the specimen to be cured in the direction of the second positioning part (23). The third positioning part (24) is located on the outside of the third side of the specimen to be cured, and the third positioning part (24) is used to restrict the movement of the specimen to be cured in the direction of the third positioning part (24). The fourth positioning part (25) is located on the outside of the fourth side of the specimen to be cured, and the fourth positioning part (25) is used to restrict the movement of the specimen to be cured in the direction of the fourth positioning part (25). A temperature monitoring device (3) is fixedly installed on the inner side wall of the specimen preservation box (1).

2. A curing box for cement mortar according to claim 1, characterized in that: The first positioning part (22), the second positioning part (23) and the third positioning part (24) are all long strip acrylic plates. The fourth positioning part (25) includes a first end section (26) and a second end section (27). The first end section (26) and the second end section (27) are both rectangular acrylic plates. One end of the first positioning part (22) is fixedly connected to one end of the second positioning part (23). The other end of the first positioning part (22) is fixedly connected to one end of the third positioning part (24). The other end of the second positioning part (23) is fixedly connected to one end of the first end section (26). The other end of the third positioning part (24) is fixedly connected to one end of the second end section (27), so that the other ends of the first end section (26) and the other ends of the second end section (27) are arranged opposite to each other.

3. A curing box for cement mortar according to claim 1, characterized in that: The first positioning part (22) has a groove, the opening of the groove faces the side of the specimen to be cured, the groove is located in the middle of the first positioning part (22) near the specimen to be cured, and the width of the groove is less than the length of the first positioning part (22) plate near the specimen to be cured.

4. A cement paste curing box according to claim 3, characterized in that: The specimen positioning fixture (21) also includes an auxiliary strip (28), which engages with the groove. The auxiliary strip (28) is removed during curing to increase the contact area between the specimen to be cured and water.

5. A curing box for cement mortar according to claim 2, characterized in that: The first positioning component (2) includes a plurality of specimen positioning fixtures (21), the number of which is even. The plurality of specimen positioning fixtures (21) are arranged in two rows, and the number of specimen positioning fixtures (21) in the two rows is equal. Each specimen positioning fixture (21) in the same row is aligned by the outer edge of its first positioning part (22), and adjacent specimen positioning fixtures (21) are fixedly connected by their respective second positioning parts (23) and third positioning parts (24). The two rows of specimen positioning fixtures (21) are fixedly connected by the outer edge of their respective first positioning parts (22).

6. A cement paste curing box according to claim 5, characterized in that: The number of the specimen positioning fixtures (21) is six.

7. A curing box for cement mortar according to claim 1, characterized in that: The cement mortar curing box also includes a second positioning component (4), the structure of which is the same as that of the first positioning component (2). The first positioning component (2) is located in the upper region inside the body (1) of the specimen curing box, and the second positioning component (4) is located in the lower region inside the body (1) of the specimen curing box.

8. A cement paste curing box according to claim 7, characterized in that: The specimen preservation box body (1) is formed by enclosing a transparent acrylic sheet. The top of the specimen preservation box body (1) is an open structure. The inner sidewall of the specimen preservation box body (1) is provided with a stepped support structure (11). The stepped support structure (11) includes an upper support structure (12) and a lower support structure (13) spaced apart along the height direction of the inner sidewall of the specimen preservation box body (1). The upper support structure (12) is located in the area near the opening of the specimen preservation box body (1), and the lower support structure (13) is located in the area near the bottom of the specimen preservation box body (1). The first positioning component (2) is detachably supported and fixed on the upper support structure (12), and the second positioning component (4) is detachably supported and fixed on the lower support structure (13).

9. A curing box for cement mortar according to claim 1, characterized in that: The outer surface of the specimen preservation box (1) is engraved with a liquid level gauge (14), which extends along the depth direction of the specimen preservation box (1).

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