Simple detection device for porosity of pervious concrete

Abstract

The utility model discloses a simple detection device for the porosity of pervious concrete. The simple detection device comprises a detection device body, and a pressurizing mechanism and a detection sample placing mechanism which are positioned in the detection device body, the pressurizing mechanism comprises an electric push rod, a push rod body is connected to the lower portion of the electric push rod, and a pressing plate is arranged below the push rod body. The device has the beneficial effects that the pressing plate is clung to the water surface through the arranged pressurizing mechanism, then the electric push rod is started to drive the push rod body and the pressing plate to move downwards to pressurize water, and the porosity water seepage test is performed on a pervious concrete sample under the action of enhancing the water pressure, so that test data can be acquired in a relatively short time; according to the arrangement, the problems that most of the existing simple detection devices for the porosity of the pervious concrete are relatively long in water seepage period and cannot permeate the whole body in a short time, or the influence of a small amount of bubbles which are not easy to discharge is directly ignored, so that the measurement result is inaccurate are solved.

Description

Technical Field

[0001] The utility model relates to the field of porosity detection of permeable concrete, in particular to a simple porosity detection device for permeable concrete. Background Art

[0002] Pervious concrete is a new type of building material, and its porosity is one of its most important characteristics. Porosity refers to the ratio of the volume of pores in a material to the total volume. For pervious concrete, the higher the porosity, the better its water permeability. When testing the porosity of pervious concrete, a simple porosity testing device for pervious concrete is required.

[0003] A test device for the connected porosity of permeable cement concrete disclosed in a Chinese utility model (Announcement No.: CN205449726U) discloses a test device for the connected porosity of permeable cement concrete, which includes a water tank, a water inlet and a drain port are provided on the water tank, a heating device is provided in the water tank, a weighing system is provided on the top of the water tank, a hanging basket is hung on the weighing system, and the hanging basket is used to hold the tested permeable cement concrete specimen. The setting of the utility model can realize the saturation process and drying process of the entire test in one instrument, which is more labor-saving, efficient and more accurate than the existing equipment.

[0004] However, most of the existing simple detection devices for the porosity of permeable concrete have a long water seepage period and cannot penetrate the entire concrete in a short time, or directly ignore the influence of a small amount of bubbles that are difficult to discharge, resulting in inaccurate measurement results. Therefore, a simple detection device for the porosity of permeable concrete is now proposed. Utility Model Content

[0005] In order to improve the problem that most of the existing simple detection devices for the porosity of permeable concrete have a long water seepage period and cannot penetrate the entire concrete in a short time, or directly ignore the influence of a small amount of bubbles that are difficult to discharge, resulting in inaccurate measurement results, the utility model provides a simple detection device for the porosity of permeable concrete.

[0006] The utility model provides a simple detection device for the porosity of permeable concrete, which adopts the following technical scheme:

[0007] A simple detection device for porosity of permeable concrete comprises a detection device body, a pressurizing mechanism and a detection sample placing mechanism located inside the detection device body.

[0008] The pressurizing mechanism comprises an electric push rod, a push rod body is connected below the electric push rod, and a pressure plate is arranged below the push rod body.

[0009] By adopting the above technical solution, a pressurizing mechanism is set up, in which the electric push rod cooperates with the push rod body and the pressure plate to pressurize the inside of the cover of the detection device, and the porosity water seepage test of the permeable concrete sample is carried out under the dual action of air pressure and water pressure, which is conducive to obtaining test data in a shorter time. This setting eliminates the problem that most of the existing simple porosity detection devices of permeable concrete have a long water seepage cycle and cannot penetrate the whole in a short time, or directly ignore the influence of a small number of bubbles that are difficult to discharge, resulting in inaccurate measurement results.

[0010] As a further solution of the utility model, the pressing plate is lifted and lowered inside the detection device body through the electric push rod and the push rod body.

[0011] By adopting the above technical solution, the inside of the cover of the detection device can be pressurized, and the porosity water permeability test of the permeable concrete sample can be carried out under the dual action of air pressure and water pressure, which is conducive to obtaining test data in a shorter time.

[0012] As a further solution of the utility model, the detection sample placement mechanism includes a placement plate, a through hole is opened inside the placement plate, a partition is fixed on the surface of the placement plate, a sample placement area is arranged on one side of the partition, and a gravity sensor is arranged above the sample placement area.

[0013] By adopting the above technical solution, the gravity sensor can directly read the permeable concrete samples after being saturated with water and after being dried, without the need to repeatedly take them out for weighing, and the measurement is more convenient.

[0014] As a further solution of the utility model, a screw sleeve is connected below the placement plate, and a screw is connected below the screw sleeve.

[0015] By adopting the above technical solution, the screw rod sleeve and the placement plate can be driven to move upward by rotating the screw rod.

[0016] As a further solution of the utility model, drying fans are arranged on both the left and right sides of the detection device body, and a heating wire is installed on the other side of the drying fan.

[0017] By adopting the above technical solution, the heating wire is energized, and the drying fan is started to blow hot air to the permeable concrete samples to dry them, which can save detection time.

[0018] As a further solution of the utility model, a detection device cover is installed on the top of the detection device body, an observation window is installed on the surface of the detection device body, and a base is provided on the bottom of the detection device body.

[0019] By adopting the above technical solution, the observation window helps the inspector to observe the situation inside the detection device body in time.

[0020] As a further solution of the utility model, the placement plate is lifted and lowered inside the detection device body through a screw sleeve and a screw.

[0021] By adopting the above technical solution, it is convenient to move the test samples out of the water surface and inside the detection device body, which reduces the workload of the staff and helps to improve the efficiency of the detection.

[0022] As a further solution of the utility model, the through hole runs through the interior of the placement plate.

[0023] By adopting the above technical solution, water will not be brought out of the detection device body when the placement tray is moved out.

[0024] In summary, the utility model has the following beneficial effects:

[0025] 1. The utility model sets a pressurizing mechanism to make the pressing plate close to the water surface, then starts the electric push rod to drive the push rod body and the pressing plate to move downward to pressurize the water, and conducts a porosity water seepage test on the permeable concrete sample under the action of enhanced water pressure, which is conducive to obtaining test data in a relatively short time. This setting eliminates the problem that most of the existing simple porosity detection devices for permeable concrete have a long water seepage cycle and cannot penetrate the whole in a short time, or directly ignore the influence of a small amount of bubbles that are difficult to discharge, resulting in inaccurate measurement results;

[0026] 2. The utility model has a detection sample placement mechanism, in which the partition can be divided into 4 sample placement areas, and the porosity of 4 groups of permeable concrete samples can be tested at the same time. The detection efficiency is high. The gravity sensor can directly read the permeable concrete samples after saturation and drying, without the need to repeatedly take them out for weighing, and the measurement is more convenient. This setting can make the entire experimental process simpler and the detection time shorter, which is very practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the main structure of the detection device of the utility model.

[0028] Figure 2 It is a schematic diagram of the internal structure of the detection device body of the utility model.

[0029] Figure 3 It is a schematic diagram of the structure of the placement plate of the utility model.

[0030] Description of reference numerals:

[0031] 1. Detection device body; 2. Observation window; 3. Base; 4. Pressurizing mechanism; 401. Electric push rod; 402. Push rod body; 403. Pressing plate; 5. Detection sample placement mechanism; 501. Placement plate; 502. Screw sleeve; 503. Screw; 504. Partition; 505. Through hole; 506. Gravity sensor; 507. Sample placement area; 6. Detection device cover; 7. Heating wire; 8. Drying fan. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-Figure 3 This application is described in further detail.

[0033] Please refer to Figure 1 and Figure 2 A simple detection device for porosity of permeable concrete includes a detection device body 1, a pressurizing mechanism 4 and a detection sample placing mechanism 5 located inside the detection device body 1, a drying fan 8 is arranged on the left and right sides of the detection device body 1, and a heating wire 7 is installed on the other side of the drying fan 8. Through the arranged heating wire 7 and the drying fan 8, the heating wire 7 is energized, and the drying fan 8 is started to blow hot air to 4 groups of permeable concrete samples to dry them, which can save detection time. A detection device cover 6 is installed on the top of the detection device body 1, an observation window 2 is installed on the surface of the detection device body 1, and a base 3 is arranged at the bottom of the detection device body 1.

[0034] Reference Figure 2 The pressurizing mechanism 4 includes an electric push rod 401, a push rod body 402 is connected to the lower part of the electric push rod 401, a pressure plate 403 is arranged under the push rod body 402, and the pressure plate 403 is lifted and lowered inside the detection device body 1 through the electric push rod 401 and the push rod body 402. The pressure mechanism 4 is set to make the pressure plate 403 close to the water surface, and then the electric push rod 401 is started to drive the push rod body 402 and the pressure plate 403 to move downward to pressurize the water. Under the action of enhanced water pressure, the porosity water seepage test is carried out on the permeable concrete sample, which is conducive to obtaining test data in a shorter time. This setting eliminates the problem that most of the existing simple porosity detection devices of permeable concrete have a long water seepage period and cannot penetrate the whole in a short time, or directly ignore the influence of a small amount of bubbles that are difficult to discharge, resulting in inaccurate measurement results.

[0035] Reference Figure 2 and Figure 3The detection sample placement mechanism 5 includes a placement plate 501, a through hole 505 is opened inside the placement plate 501, a partition 504 is fixed on the surface of the placement plate 501, a sample placement area 507 is arranged on one side of the partition 504, a gravity sensor 506 is arranged above the sample placement area 507, a screw sleeve 502 is connected below the placement plate 501, and a screw 503 is connected below the screw sleeve 502. The screw sleeve 502 and the placement plate 501 are driven to move upward by rotating the screw 503, and the water inside the detection device body 1 is discharged through the drain port. The arrangement facilitates the removal of the test sample from the water surface and the interior of the test device body 1, reduces the workload of the staff, and helps to improve the efficiency of the test. Through the set test sample placement mechanism 5, the partition 504 can be divided into four sample placement areas 507, and the porosity of four groups of permeable concrete samples can be tested at the same time, with high detection efficiency. The gravity sensor 506 can directly read the permeable concrete samples after saturation and drying, without repeatedly taking them out for weighing, and the measurement is more convenient. This arrangement can make the entire experimental process simpler, the detection time is shorter, and it is very practical.

[0036] The implementation principle of the utility model is as follows: when using the detection device body 1, first, four groups of permeable concrete samples to be tested are placed in the sample placement area 507 respectively, then the detection device cover 6 is opened to completely cover the placement plate 501 with water to saturate the permeable concrete samples, and the pressure mechanism 4 is set to make the pressure plate 403 close to the water surface, and then the electric push rod 401 is started to drive the push rod body 402 and the pressure plate 403 to move downward to pressurize the water, and the porosity water seepage test is performed on the permeable concrete sample under the action of the enhanced water pressure, which is conducive to obtaining test data in a shorter time. This setting eliminates the problem that most of the existing simple detection devices for the porosity of permeable concrete have a long water seepage period. The problem is that the saturated water is too long to penetrate the whole in a short time, or the influence of a small amount of bubbles that are difficult to discharge is directly ignored, resulting in inaccurate measurement results. After the saturation is completed, the screw sleeve 502 and the placement plate 501 are driven to move upward by rotating the screw 503, and the water inside the detection device body 1 is discharged through the drain port. The weight of the 4 groups of permeable concrete samples after saturation is detected by the gravity sensor 506, and then the heating wire 7 is energized, and the drying fan 8 is started to blow hot air to the 4 groups of permeable concrete samples to dry them. After drying, the 4 groups of permeable concrete samples are weighed by the gravity sensor 506, and the recorded data is input according to the porosity calculation formula to obtain the porosity value of the permeable concrete.

[0037] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A simple detection device for porosity of permeable concrete, characterized in that: It comprises a detection device body (1), and a pressurizing mechanism (4) and a detection sample placement mechanism (5) located inside the detection device body (1); The pressurizing mechanism (4) comprises an electric push rod (401), a push rod body (402) is connected below the electric push rod (401), and a pressure plate (403) is provided below the push rod body (402).

2. A simple detection device for porosity of permeable concrete according to claim 1, characterized in that: The pressing plate (403) is lifted and lowered inside the detection device body (1) by means of an electric push rod (401) and a push rod body (402).

3. A simple detection device for porosity of permeable concrete according to claim 1, characterized in that: The detection sample placement mechanism (5) comprises a placement plate (501), a through hole (505) is provided inside the placement plate (501), a partition (504) is fixed on the surface of the placement plate (501), a sample placement area (507) is provided on one side of the partition (504), and a gravity sensor (506) is provided above the sample placement area (507).

4. A simple detection device for porosity of permeable concrete according to claim 3, characterized in that: A screw sleeve (502) is connected below the placement plate (501), and a screw (503) is connected below the screw sleeve (502).

5. A simple detection device for porosity of permeable concrete according to claim 1, characterized in that: Drying fans (8) are provided on both the left and right sides of the detection device body (1), and a heating wire (7) is installed on the other side of the drying fan (8).

6. A simple detection device for porosity of permeable concrete according to claim 1, characterized in that: A detection device cover (6) is installed on the top of the detection device body (1), an observation window (2) is installed on the surface of the detection device body (1), and a base (3) is provided at the bottom of the detection device body (1).

7. A simple detection device for porosity of permeable concrete according to claim 3, characterized in that: The placement plate (501) is lifted and lowered inside the detection device body (1) via a screw sleeve (502) and a screw (503).

8. A simple detection device for porosity of permeable concrete according to claim 3, characterized in that: The through hole (505) penetrates the interior of the placement plate (501).

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