Test block maintenance frame

Abstract

The utility model relates to a test block maintenance frame which comprises a base, baffles and limiting strips, a plurality of baffles and limiting strips are arranged on the base at intervals, and a placing space for placing test blocks is formed between the baffles and the limiting strips. According to the test block curing frame provided by the utility model, cement test blocks with downward side surfaces can be stably placed; meanwhile, the base capable of being supported is arranged at the bottom, so that the operation of placing or taking the test blocks in the constant-temperature box is very convenient, and the safety of the test blocks in the taking and placing process can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of test block curing technology, and in particular to a test block curing rack. Background Technology

[0002] Some national or industry standards for water-based architectural coatings or waterproof coatings include a technical specification for bond strength. This specification includes requirements for bond strength under standard conditions, as well as bond strength after immersion in water or after freeze-thaw cycles. For example... Figure 1 Preparation of bonding strength test specimens: A frame with an outer side length of 70mm and an inner side length of 40mm (different coating standards have different requirements for the thickness of the frame, such as 1mm, 1.5mm, etc.) is placed on a 70mm×70mm×20mm cement mortar specimen block 100. The coating sample to be tested fills the frame, and the surface is smoothed with a scraper. The frame is immediately removed, and the specimen is cured in a standard environment for the specified number of days. A steel pull-out piece 110 is bonded and fixed to the coating sample to be tested using two-component epoxy adhesive or two-component polyurethane adhesive. After the adhesive has completely cured, the specimen is subjected to immersion in water or freeze-thaw cycle treatment. After immersion in water, during freeze-thaw cycle treatment, and after freeze-thaw cycle treatment, the specimen is required to undergo heat treatment curing: with the side of the cement mortar specimen block facing down, it is dried in a constant temperature chamber at a specified temperature (such as 50℃, 60℃) for a specified duration (such as 24h, 48h).

[0003] It can be seen that before immersion or freeze-thaw cycles, the steel pull-out piece 110 was already bonded and fixed to one side of the cement mortar specimen 100. However, the heat treatment curing required the cement mortar specimen 100 to be placed with its side facing down in the constant temperature chamber. At this time, the force on the two sides of the specimen was extremely uneven, and the specimen was very likely to tilt towards the side with the steel pull-out piece 110 bonded to it. When it tilted, it bumped against the partition of the constant temperature chamber, which could easily cause defects such as micro-cracks inside the coating sample and affect the test results. Summary of the Invention

[0004] The purpose of this invention is to provide a test block curing rack to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model discloses a test block curing frame, comprising: a base, baffles and limiting strips, wherein a plurality of baffles and limiting strips are spaced apart on the base, and the test block is placed between the baffles and limiting strips.

[0006] Preferably, the base is rectangular, the baffle is provided along the edge of the long side of the base, and the limiting strip is provided parallel to the long side of the base.

[0007] Preferably, the test block curing rack is made of a high-temperature resistant material.

[0008] Preferably, the test block curing rack is made of at least one material selected from PC, PBT or PTFE.

[0009] Preferably, the distance between adjacent baffles is 41-43 mm. The distance between the limiting strip and the baffle is 21-23 mm.

[0010] Preferably, the baffles on both sides of the base are symmetrical about the center of the base.

[0011] Preferably, the baffle has a height of 50-80mm, a width of 30-40mm, and a thickness of 2-4mm.

[0012] Preferably, the base and the limiting strip are integrally formed; the limiting strip has a semi-circular cross-sectional shape and a radius of 2-3 mm.

[0013] Preferably, the base has dimensions of 280-290mm in length, 70-90mm in width, and 6-10mm in thickness.

[0014] Preferably, at least a portion of the surface of the test block curing frame is coated with a color-changing paint.

[0015] This utility model has the following beneficial effects:

[0016] 1. The test block curing rack provided by this utility model can stably place cement test blocks with their sides facing down; at the same time, the bottom is provided with a support base, which makes it very convenient to place or remove the test blocks in the constant temperature chamber, and can ensure the safety of the test blocks during the placement and removal process.

[0017] 2. Using the test block curing rack provided by this utility model, cement mortar test blocks can be arranged in a centralized and neat manner. On the one hand, within the limited space of the constant temperature chamber, more test blocks and other samples that need heat treatment can be accommodated at the same time, which improves the space utilization rate of the constant temperature chamber. On the other hand, it avoids the random and messy stacking of test blocks, making the laboratory or curing room environment cleaner and more orderly, which is conducive to creating a good working atmosphere, and also facilitates daily cleaning and maintenance.

[0018] 3. The test block curing rack provided by this utility model is made of heat-resistant material with a heat resistance temperature of ≥100℃ and excellent strength and wear resistance. It is suitable for heat treatment curing at 80℃ and below. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the test block;

[0020] Figure 2 This is a schematic diagram of the overall structure of the test block curing rack provided in a specific embodiment of the present utility model;

[0021] Figure 3This is a top view of the test block curing frame provided in a specific embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of a test block installed on a test block curing frame, as shown in a specific embodiment of this utility model.

[0023] Explanation of symbols for main components:

[0024] 100, Test block; 110, Steel drawing part; 200, Base; 210, Baffle; 220, Limiting strip. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] Example 1

[0027] like Figures 2-4 This utility model provides a test block curing rack, including: a base 200, baffles 210, and limiting strips 220. A plurality of baffles 210 and limiting strips 220 are spaced apart on the base 200, and the test block 100 is placed between the baffles 210 and the limiting strips 220. This design provides a stable placement area for the test block 100, allowing it to maintain a relatively fixed position during curing, preventing it from tipping over due to random movement, and effectively solving the problem that uneven stress on the test specimen easily leads to tipping and impact, affecting test results.

[0028] The test block curing rack provided in this embodiment is equipped with not only baffles 210 but also limiting strips 220. The cement mortar test block 100 is placed with its side facing down between the baffles 210 and the limiting strips 220, with the side of the steel pull-out member 110 bonded to it facing the vertical baffles 210 between the two vertical baffles 210. In this way, the cement mortar test block 100 with its side facing down is placed stably. At the same time, a support base 200 is provided at the bottom, which makes it very convenient to place or remove the test block in the constant temperature chamber, and can ensure the safety of the test block 100 during the placement and removal process.

[0029] The upper surface of the base 200 is rectangular, and the base 200 has dimensions of 286mm in length, 80mm in width, and 8mm in thickness. A baffle 210 is positioned along the edge of the long side of the base 200, and a limiting strip 220 is parallel to the long side of the base 200. The baffles 210 on both sides of the base 200 are symmetrical about its center. This arrangement ensures the symmetry and stability of the entire curing frame structure, resulting in more even stress distribution on the test block 100 when placed on the curing frame.

[0030] The distance between adjacent baffles 210 is 42mm. The paint sample to be tested needs to fill the 40mm inner side frame set on the test block 100, meaning the size of the paint sample to be tested is 40mm × 40mm. The 42mm distance between the two baffles 210 is just right for installing the paint sample to be tested. At the same time, ensuring a certain gap between the test blocks 100 facilitates air circulation, prevents the test blocks 100 from being squeezed together, and also helps the test blocks 100 to be heated evenly during curing, while also facilitating the placement and removal of the test blocks 100.

[0031] The baffle 210 has a height of 70mm, a width of 35mm, and a thickness of 3mm. The 70mm height matches the size of the test block 100 (e.g., a 70mm×70mm×20mm cement mortar test block 100), effectively preventing the test block 100 from tipping over in the height direction; the 35mm width provides sufficient support area to ensure the stability of the baffle 210; and the 3mm thickness ensures the strength of the baffle 210 without increasing the weight and cost of the curing frame due to excessive thickness.

[0032] The distance between the limiting strip 220 and the baffle 210 is 33mm. The base 200 and the limiting strip 220 are integrally formed; the limiting strip 220 has a semi-circular cross-sectional shape with a radius of 2mm. The semi-circular cross-section of the limiting strip 220 can reduce wear on the edge of the test block 100. Compared with sharp edges, the arc shape is softer and less likely to scratch the test block 100 when placing and removing it; the 2mm radius ensures that the limiting strip 220 has a certain support and limiting capacity, while not occupying too much placement space due to an excessively large radius.

[0033] The test block curing rack provided in this embodiment allows cement mortar test blocks 100 to be neatly arranged in a centralized manner. On the one hand, it can accommodate more test blocks 100 and other samples that require heat treatment within the limited space of the constant temperature chamber, thus improving the space utilization rate of the constant temperature chamber. On the other hand, it avoids the random and messy stacking of test blocks 100, making the environment of the laboratory or curing room more tidy and orderly, which is conducive to creating a good working atmosphere and also facilitates daily cleaning and maintenance.

[0034] The test block curing frame is made of a high-temperature resistant material. Specifically, it is made of at least one of PC (polycarbonate), PBT (polybutylene terephthalate), or PTFE (polytetrafluoroethylene). Since test block 100 needs to be treated in a constant-temperature chamber at a specified temperature during the curing process, the high-temperature resistant material ensures that the curing frame does not deform or age under these conditions, guaranteeing its long-term stable use and ensuring the accuracy and reliability of the curing process for test block 100.

[0035] Example 2

[0036] The difference between this embodiment and Embodiment 1 is that at least a portion of the surface of the test block curing rack is coated with a color-changing paint. This color-changing paint can serve as a direct indicator of temperature or environmental conditions. For example, when the temperature inside the constant temperature chamber is abnormal or the environment changes, the paint will change color, alerting operators to promptly identify the problem and preventing the abnormal environment from affecting the test results of the test block 100, thus improving the monitorability and safety of the curing process.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A test block curing rack, characterized in that, include: The base (200), baffles (210) and limiting strips (220) are provided on the base (200) at intervals, and the test block (100) is placed between the baffles (210) and the limiting strips (220).

2. The test block curing rack according to claim 1, characterized in that: The base (200) is rectangular, the baffle (210) is provided along the edge of the long side of the base (200), and the limiting strip (220) is provided parallel to the long side of the base (200).

3. The test block curing rack according to claim 2, characterized in that: The test block curing frame is made of high-temperature resistant material.

4. A test block curing rack according to claim 3, characterized in that: The test block curing frame is made of at least one material selected from PC, PBT or PTFE.

5. A test block curing rack according to claim 1, characterized in that: The distance between adjacent baffles (210) is 41-43 mm; the distance between the limiting strip (220) and the baffle (210) is 21-23 mm.

6. A test block curing rack according to claim 1, characterized in that: The baffles (210) on both sides of the base (200) are symmetrical about the center of the base (200).

7. A test block curing rack according to claim 1, characterized in that: The baffle (210) has a height of 50-80mm, a width of 30-40mm, and a thickness of 2-4mm.

8. A test block curing rack according to claim 1, characterized in that: The base (200) and the limiting strip (220) are integrally formed; the cross-sectional shape of the limiting strip (220) is semi-circular and the radius is 2-3mm.

9. A test block curing rack according to claim 1, characterized in that: The base (200) has dimensions of 280-290mm in length, 70-90mm in width, and 6-10mm in thickness.

10. A test block curing rack according to claim 1, characterized in that: At least a portion of the surface of the test block curing frame is coated with a color-changing paint.

Images