A high-grade waterproof asphalt flexibility test sample manufacturing device

Abstract

The utility model discloses a high grade waterproof pitch flexibility test sample production device belongs to building pitch performance test technical field, the utility model is provided with sample preparation subassembly, and its from top to bottom has the sample preparation board and refrigeration bottom plate, is equipped with a plurality of interval arrangement's sample preparation hole on the sample preparation board, the sample preparation hole is placed with the sample mould of sample preparation, be provided with refrigeration spare in the refrigeration bottom plate, is used for providing the cold source for sample mould, the utility model discloses a sample mould sample preparation can be formed once, and the thickness is controllable, and the refrigeration spare provides the cold source for sample mould, avoids the sample surface's pulling, guarantees sample surface level and the accuracy of measurement result.

Description

Technical Field

[0001] This utility model relates to the field of building asphalt performance testing technology, and in particular to a device for preparing high-grade waterproof asphalt flexibility test samples. Background Technology

[0002] With the development of infrastructure, the application of waterproof membranes is becoming increasingly widespread. In recent years, besides road asphalt, asphalt for waterproof materials has become the most widely used type of asphalt. In 2019, the petrochemical industry jointly formulated the SH / T0981-2019 standard, "Asphalt for Waterproof Materials." This standard, based on the original JC / T 2218-2014, further refines the classification of asphalt grades, retaining the traditional low-grade asphalt while adding three high-grade series: F150, F300, and F400. High-grade asphalt has changed the traditional method of adding softening oil when producing modified asphalt waterproof membranes, simplifying the preparation process. Therefore, high-grade waterproof asphalt has become a development trend in waterproof materials and is attracting increasing attention from waterproofing companies. Flexibility is an important indicator reflecting the low-temperature stability of waterproof asphalt, and its quality is directly determined. Therefore, accurate measurement of the flexibility of waterproof asphalt is particularly important. Current standards stipulate that when preparing samples, the asphalt must be spread in a hot state with good fluidity, cooled, and then cut into samples of specific sizes for testing.

[0003] However, in the actual preparation of test samples, the paving thickness is difficult to control, and the softening point of high-grade waterproof asphalt is low, and the viscosity is high at room temperature. When cutting the sample, the pulling on the side can easily damage the flatness of the sample side. In addition, the cutting process uses a ruler and a knife together, and the pressure of the ruler has a significant impact on the sample thickness. The thickness directly affects the result of the flexibility test. The preparation of standard test samples is difficult, resulting in low accuracy of the flexibility test of high-grade waterproof asphalt.

[0004] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a device for preparing high-grade waterproof asphalt flexibility test samples to solve the defects existing in the preparation of high-grade waterproof asphalt flexibility test samples, so as to ensure that the prepared flexibility test samples are standardized and improve the accuracy of high-grade waterproof asphalt flexibility measurement. Utility Model Content

[0005] The purpose of this invention is to provide a high-grade waterproof asphalt flexibility test sample preparation device to solve the problems of uncontrollable sample thickness, easily damaged sample side flatness, complex sample preparation steps, and high production difficulty in the existing technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a device for preparing high-grade waterproof asphalt flexibility test samples, comprising:

[0008] The sample preparation assembly consists of a sample preparation plate and a cooling base plate stacked from top to bottom. The sample preparation plate has several spaced sample preparation holes, and a sample mold for sample preparation is placed in each of the sample preparation holes. The cooling base plate is equipped with a cooling component to provide a cold source for the sample mold.

[0009] Furthermore, the lower surface of the sample preparation plate and the upper surface of the cooling base plate are tightly fitted together. A slot is provided at the edge of the upper surface of the cooling base plate, and a locking block is provided on the lower surface of the sample preparation plate corresponding to the slot. The locking block can engage with the slot.

[0010] Furthermore, handles are fixedly connected to both ends of the upper part of the sample plate.

[0011] Furthermore, the refrigeration component is a circulation pipeline coiled inside the refrigeration base plate. The side wall of the refrigeration base plate is provided with a liquid inlet and a liquid outlet, and the two ends of the circulation pipeline are respectively connected to the liquid inlet and the liquid outlet.

[0012] Furthermore, the coolant used in the refrigeration component has a freezing point below -35°C.

[0013] Furthermore, the sample preparation hole is a through hole, the inner surface of the sample preparation hole is in contact with the outer surface of the sample mold, and the lower surface of the sample mold is in contact with the cooling base plate.

[0014] Furthermore, the height of the sample preparation hole is equal to the height of the sample mold.

[0015] Furthermore, both the sample preparation plate and the cooling base plate are made of stainless steel.

[0016] Furthermore, the cooling base plate is provided with an insulation layer, but the top wall inside the cooling base plate is not provided with an insulation layer.

[0017] Furthermore, the thickness of the insulation layer is not less than 1 cm.

[0018] In the above technical solution, the present invention provides a sample preparation device for high-grade waterproof asphalt flexibility test. Compared with the prior art, the sample preparation plate has a sample preparation hole in which a sample mold is placed. The sample can be formed in one step through the sample mold, and the thickness can be controlled. There is no need to use a knife and ruler to cut the sample, avoiding damage to the sample caused by cutting and pressing. In addition, the cooling base plate is equipped with a cooling component to provide a cold source for the sample mold, avoiding the pulling of the sample surface and sides, ensuring the flatness of the sample surface and sides, and making the measurement results more accurate. Multiple test samples can be prepared at one time without secondary freezing, saving time and effort, and is simple and fast. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of a high-grade waterproof asphalt flexibility test sample preparation device disclosed in this utility model;

[0021] Figure 2 This utility model discloses a schematic diagram of the cooling control system for a high-grade waterproof asphalt flexibility test sample preparation device;

[0022] Figure 3 This is a schematic diagram of the sample preparation component and the cooling base plate in the separated state of a high-grade waterproof asphalt flexibility test sample preparation device disclosed in this utility model.

[0023] Figure 4 This is a schematic diagram of the sample mold structure of a high-grade waterproof asphalt flexibility test sample preparation device disclosed in this utility model.

[0024] Figure 5 This is a schematic diagram of the lower surface structure of a sample preparation device for a high-grade waterproof asphalt flexibility test sample preparation device disclosed in this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Sample preparation hole; 2. Sample preparation plate; 3. Cooling base plate; 4. Liquid inlet; 5. Liquid outlet; 6. Handle; 7. Cooling control system; 8. Slot; 9. Locking block. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] See Figure 1-5 As shown;

[0029] A utility model discloses a sample preparation device for a high-grade waterproof asphalt flexibility test, comprising: a sample preparation component;

[0030] The sample preparation assembly includes a sample mold, a sample preparation plate 2 stacked from top to bottom, and a cooling base plate 3, with a cooling component installed inside the cooling base plate 3;

[0031] The sample preparation plate 2 has multiple sample preparation holes 1, which are through holes. The multiple sample preparation holes 1 are arranged at intervals. A sample mold that can be separated from the sample preparation hole 1 is installed in the sample preparation hole 1. The inner surface of the sample preparation hole 1 is in contact with the outer surface of the sample mold. The height of the sample preparation hole 1 is equal to the height of the sample mold. The lower surface of the sample mold is in contact with the cooling base plate 3.

[0032] The lower surface of the sample plate 2 and the upper surface of the cooling base plate 3 are tightly fitted together. A slot 8 is provided at the edge of the upper surface of the cooling base plate 3. A block 9 is provided on the lower surface of the sample plate 2 corresponding to the slot 8. The block 9 can engage with the slot 8. Handles 6 are fixedly connected to both ends of the upper part of the sample plate 2 for easy disassembly.

[0033] See Figure 2 , 3 As shown:

[0034] The refrigeration component is a circulation pipe located inside the refrigeration base plate 3. The side wall of the refrigeration base plate 3 has an inlet 4 and an outlet 5. The two ends of the circulation pipe are connected to the inlet 4 and the outlet 5 respectively, and the inlet 4 and the outlet 5 are connected to the external cooling control system 7. Specifically, the inlet 4 is connected to the outlet of the liquid storage tank of the cooling control system 7, and the outlet 5 is connected to the inlet of the liquid storage tank. The liquid storage tank is equipped with a cooling coil, and the cooling coil is equipped with refrigerant. The inlet of the cooling coil is connected to the refrigerant outlet of the condenser, and the outlet of the cooling coil is connected to the refrigerant inlet of the condenser. The cooling liquid used by the cooling control system 7 has a freezing point below -35℃.

[0035] The main structures of the sample plate 2 and the cooling base plate 3 are both made of stainless steel. The cooling base plate 3 has an insulation layer with a thickness of 1cm. Specifically, the bottom wall and side wall of the cooling base plate 3 are equipped with insulation layers, while the top wall inside the cooling base plate 3 is not equipped with an insulation layer, so as to ensure the cold transfer between the upper surface of the cooling base plate 3 and the lower surface of the sample plate 2 and realize the exchange of cold and heat.

[0036] Preferably, the inner length of the sample mold is 15cm, the inner width is 2.5cm, and the height is 3mm;

[0037] In the above technical solution, the present invention provides a device for preparing high-grade waterproof asphalt flexibility test samples, and the method of use is as follows:

[0038] First, turn on the external cooling control system 7 and adjust the coolant temperature of the cooling control system 7 to -20℃. When the set temperature is reached, apply a release agent around the sample preparation hole 1 of the sample preparation plate 2 and on the surface that the sample material can contact. Place the sample mold into the sample preparation hole 1 and apply a release agent around the sample mold as well.

[0039] High-grade waterproof asphalt heated to a fluid state is poured into the sample mold while maintaining good fluidity, with the liquid level slightly higher than the upper surface of the sample mold. Excess asphalt is scraped away with a hot scraper to ensure a smooth upper surface of the sample. After cooling in an environment of -20℃ for 60 minutes, the sample preparation plate 2 is separated from the cooling base plate 3 using handle 6. The sample mold and flexibility sample are then removed in sequence. The resulting flexibility sample is full, flat, and of uniform thickness, formed in one step.

[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for preparing high-grade waterproof asphalt flexibility test samples, characterized in that, include: The sample preparation assembly consists of a sample preparation plate (2) and a cooling base plate (3) stacked from top to bottom. The sample preparation plate (2) has several spaced sample preparation holes (1) and a sample mold for sample preparation is placed in the sample preparation holes (1). The cooling base plate (3) is equipped with a cooling component to provide a cold source for the sample mold.

2. The apparatus for preparing high-grade waterproof asphalt flexibility test samples according to claim 1, characterized in that: The lower surface of the sample plate (2) and the upper surface of the cooling base plate (3) are closely fitted together. A slot (8) is provided at the edge of the upper surface of the cooling base plate (3). A locking block (9) is provided on the lower surface of the sample plate (2) corresponding to the slot (8). The locking block (9) can engage with the slot (8).

3. The apparatus for preparing high-grade waterproof asphalt flexibility test samples according to claim 1 or 2, characterized in that: The sample board (2) has handles (6) fixedly connected to both ends of the upper part.

4. The apparatus for preparing high-grade waterproof asphalt flexibility test samples according to claim 1 or 2, characterized in that: The refrigeration component is a circulation pipeline coiled inside the refrigeration base plate (3). The side wall of the refrigeration base plate (3) is provided with a liquid inlet (4) and a liquid outlet (5). The two ends of the circulation pipeline are respectively connected to the liquid inlet (4) and the liquid outlet (5).

5. The apparatus for preparing high-grade waterproof asphalt flexibility test samples according to claim 4, characterized in that: The coolant used in the refrigeration component has a freezing point below -35°C.

6. The apparatus for preparing high-grade waterproof asphalt flexibility test samples according to claim 1, characterized in that: The sample preparation hole (1) is a through hole, the inner surface of the sample preparation hole (1) is in contact with the outer surface of the sample mold, and the lower surface of the sample mold is in contact with the cooling base plate (3).

7. The apparatus for preparing high-grade waterproof asphalt flexibility test samples according to claim 1 or 6, characterized in that: The height of the sample preparation hole (1) is equal to the height of the sample mold.

8. The apparatus for preparing high-grade waterproof asphalt flexibility test samples according to claim 1, characterized in that: Both the sample preparation plate (2) and the cooling base plate (3) are made of stainless steel.

9. The apparatus for preparing high-grade waterproof asphalt flexibility test samples according to claim 1, characterized in that: The cooling base plate (3) is provided with an insulation layer, wherein the top wall inside the cooling base plate (3) is not provided with an insulation layer.

10. The apparatus for preparing high-grade waterproof asphalt flexibility test samples according to claim 9, characterized in that: The thickness of the insulation layer is not less than 1 cm.

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