Asphalt pavement testing device

Abstract

The utility model relates to the technical field of environment detection, and discloses an asphalt pavement testing device which comprises a test piece table, a spraying system and a water storage container, the test piece table is used for bearing an asphalt pavement test piece, the spraying system is used for spraying a solution to the asphalt pavement test piece, and the water storage container is used for collecting the solution sprayed to the asphalt pavement test piece; the spraying system comprises a flow adjusting system and a temperature adjusting system, the flow adjusting system is used for adjusting the flow of a spraying solution, and the temperature adjusting system is used for adjusting the temperature of the spraying solution; the test piece table comprises a lifting system which is used for controlling the position of the test piece table. A flow adjusting system is used for simulating the rainfall condition, a temperature adjusting system is used for simulating the environment temperature, spraying water is used for simulating the situation that a pavement is washed by water, a lifting system is used for partially or completely soaking an asphalt pavement test piece in water collected in a water storage container, and the situation that the pavement is soaked by water is simulated. The problem that underground water pollution caused by the asphalt pavement under various conditions cannot be accurately simulated is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental detection, in particular to a testing device for detecting asphalt pavement. Background Art

[0002] Asphalt pavement is a widely used pavement material in modern transportation systems and is widely used in various road construction. However, with the increasing awareness of environmental protection, the pollution of groundwater by asphalt pavement has gradually attracted attention.

[0003] Although the environmental impact of asphalt pavements has gradually been paid attention to, there are few existing test methods for the heavy metal pollution of groundwater by asphalt pavements, making it difficult to accurately simulate the pollution situation under real precipitation conditions.

[0004] At present, although some technologies attempt to evaluate the environmental impact of asphalt pavement, due to the lack of accurate precipitation simulation equipment and testing methods, it is often impossible to fully evaluate the degree of heavy metal pollution of asphalt pavement on the groundwater environment. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the present invention is to provide a test device for detecting asphalt pavement, which can effectively simulate the pollution of groundwater by asphalt pavement in actual precipitation environment.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] An asphalt pavement testing device includes a test piece platform, a spraying system, and a water storage container. The test piece platform is used to carry an asphalt pavement test piece. The spraying system is used to spray a solution on the asphalt pavement test piece. The water storage container is used to collect the solution after spraying the asphalt pavement test piece.

[0008] The spraying system includes a flow regulating system and a temperature regulating system, wherein the flow regulating system is used to regulate the flow of the spraying solution, and the temperature regulating system is used to regulate the temperature of the spraying solution;

[0009] The specimen table includes a lifting system, and the lifting system is used to control the position of the specimen table.

[0010] Specifically, the spray system includes a nozzle, a water pump, a conduit and a bracket. The specimen table is a basin with a plurality of through holes at the bottom. The nozzle is located directly above the specimen table within the vertical projection area. The specimen table is located directly above the water storage container within the vertical projection area. The inlet of the water pump is arranged in the water storage container. The conduit is used to connect the nozzle and the outlet of the water pump. The bracket is fixed in the water storage container. The bracket is used to fix the nozzle, the water pump, the conduit and the specimen table.

[0011] Specifically, the flow regulating system is a flow regulating valve.

[0012] Specifically, the temperature regulation system is arranged on the nozzle, the nozzle is provided with two heat exchange interfaces, a spiral pipe is provided inside the nozzle, and the two heat exchange interfaces are connected through the spiral pipe.

[0013] Specifically, the temperature regulation system is provided in the water storage container, and the temperature regulation system includes a heat exchange tube.

[0014] Specifically, the lifting system is a telescopic rod, one end of the telescopic rod is fixed to the spray system, and the other end of the telescopic rod is installed with a test piece table.

[0015] Preferably, the test piece table, the spray system and the water storage container are made of stainless steel.

[0016] Specifically, the water storage container is a round basin, the bottom diameter of the water storage container is 30-50 cm, the thickness of the water storage container is 2-4 cm, and the thickness of the outer wall of the water storage container is 1-2 cm;

[0017] The specimen table is a round basin, and the bottom diameter of the specimen table is 20-30 cm;

[0018] The nozzle is a round nozzle, and the spray diameter range of the nozzle is 15-25 cm;

[0019] The height of the bracket is 40-50 cm;

[0020] The telescopic length of the telescopic rod is 20-45 cm;

[0021] The water pump and the bracket are fixed in the water storage container.

[0022] The technical solution provided by the utility model may have the following beneficial effects:

[0023] A flow regulation system is used to simulate precipitation conditions, a temperature regulation system is used to simulate ambient temperature, spray water is used to simulate road surface erosion, and a lifting system is used to partially or completely immerse asphalt pavement test pieces in water collected in a water storage container to simulate road surface immersion, thereby solving the problem of the inability to accurately simulate groundwater pollution caused by asphalt pavement under various conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure is a schematic cross-sectional view of a test device for detecting asphalt pavement in an embodiment of the present utility model.

[0025] Figure 2The figure is a schematic structural diagram of a test device for detecting asphalt pavement in an embodiment of the present utility model.

[0026] Among them: test piece platform 1, spray system 2, nozzle 21, water pump 22, conduit 23, bracket 24, water storage container 3. DETAILED DESCRIPTION

[0027] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more such features, and are used to distinguish between the described features, without distinction of order or importance.

[0029] In the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] The following combination Figure 1 and Figure 2 , describes a testing device for asphalt pavement in an embodiment of the present utility model.

[0032] An asphalt pavement testing device includes a test bench 1, a spraying system 2, and a water storage container 3. The test bench 1 is used to carry an asphalt pavement test specimen, the spraying system 2 is used to spray a solution on the asphalt pavement test specimen, and the water storage container 3 is used to collect the solution after spraying the asphalt pavement test specimen.

[0033] The spraying system 2 includes a flow regulating system and a temperature regulating system. The flow regulating system is used to regulate the flow of the spraying solution, and the temperature regulating system is used to regulate the temperature of the spraying solution.

[0034] The specimen table 1 includes a lifting system, and the lifting system is used to control the position of the specimen table 1.

[0035] In one embodiment, an asphalt pavement test specimen is placed on a test stand 1, which is adjusted to a suitable position using a lifting system. A spray solution is applied, and its temperature is adjusted using a temperature control system. In a specific embodiment, the solution is water, and the flow rate of the spray water is regulated using a flow control system. The asphalt pavement test specimen is sprayed, and the spray water is collected in a water storage container 3. The asphalt pavement test specimen is flushed and soaked by the spray water, simulating the degree of groundwater contamination caused by the pavement being flushed and soaked. The collected solution is then used for subsequent heavy metal testing. Analysis of the heavy metal content can simulate groundwater contamination data.

[0036] A flow regulation system is used to simulate precipitation conditions, a temperature regulation system is used to simulate ambient temperature, spray water is used to simulate road surface erosion, and a lifting system is used to partially or completely immerse the asphalt pavement test piece in the water collected in the water storage container 3 to simulate the road surface being soaked in water, thereby solving the problem of the inability to accurately simulate groundwater pollution caused by asphalt pavement under various conditions.

[0037] Specifically, the spray system 2 includes a nozzle 21, a water pump 22, a conduit 23 and a bracket 24. The specimen table 1 is a basin with several through holes at the bottom. The nozzle 21 is located directly above the specimen table 1 within the vertical projection area. The specimen table 1 is located directly above the water storage container 3 within the vertical projection area. The inlet of the water pump 22 is arranged in the water storage container 3. The conduit 23 is used to connect the nozzle 21 and the outlet of the water pump 22. The bracket 24 is fixed in the water storage container 3. The bracket 24 is used to fix the nozzle 21, the water pump 22, the conduit 23 and the specimen table 1.

[0038] like Figure 1 In one embodiment, water is contained in a water storage container 3, and a water pump 22 pumps the water through a conduit 23 to a nozzle 21 located above the specimen platform 1, spraying the water onto the asphalt pavement test specimen in the specimen platform 1 below the nozzle 21. After the water flows through the asphalt pavement test specimen, it flows into the water storage container 3 from the through hole of the specimen platform 1. The water in the water storage container 3 is circulated and sprayed onto the asphalt pavement test specimen, simulating a situation where groundwater is repeatedly contaminated by the asphalt pavement.

[0039] Specifically, the flow regulating system is a flow regulating valve.

[0040] In one embodiment, a flow regulating valve is provided on the conduit 23, and the flow rate of the spraying water can be manually adjusted to simulate the situation of flushing the road surface with different flow rates by adjusting the flow rate of the spraying water.

[0041] Specifically, the temperature regulation system is provided in the nozzle 21 . The nozzle 21 is provided with two heat exchange interfaces. A spiral pipe is provided inside the nozzle 21 . The two heat exchange interfaces are connected via the spiral pipe.

[0042] In one embodiment, the temperature regulation system is a nozzle 21 that can perform indirect heat exchange. The nozzle 21 is made of stainless steel and has good heat transfer performance. Two heat exchange interfaces are provided on the side of the nozzle 21. The two heat exchange interfaces are connected by a spiral pipe inside the nozzle 21. Hot water or cooling water is introduced from one heat exchange interface, passes through the spiral pipe inside the nozzle 21, and then flows out from the other heat exchange interface, thereby regulating the temperature of the nozzle 21 and the spray water therein to simulate precipitation conditions under different temperature environments.

[0043] Specifically, the temperature regulation system is provided in the water storage container 3 , and the temperature regulation system includes a heat exchange tube.

[0044] In one embodiment, the temperature regulation system is a heat exchange tube in the water storage container 3. The heat exchange tube is connected to a hot water source or a cold water source. The heat exchange tube is a U-shaped threaded heat exchange tube. By passing hot water or cooling water into the heat exchange tube, the temperature of the solution in the water storage container 3 is changed to simulate immersion conditions at different temperatures.

[0045] Specifically, the lifting system is a telescopic rod, one end of the telescopic rod is fixed to the spray system 2, and the other end of the telescopic rod is installed with the specimen table 1.

[0046] like Figure 2 In one embodiment, the lifting system uses a telescopic rod. The telescopic rod is a cylindrical sleeve manual telescopic rod. It is composed of multiple coaxial hollow round tubes with varying diameters that match each other and nest together. It can be manually lengthened or shortened. The sleeves are fixed by static friction. The ends of the sleeves are respectively provided with constrictions or flares to limit each other and prevent them from falling off. The telescopic rod is welded to the specimen table 1 and is suspended from the spray system 2. When the telescopic rod is not stretched and is at a short length, the specimen table 1 is located above the solution in the water storage container 3. The asphalt pavement test piece is not immersed in the solution in the water storage container 3, simulating the situation where the road surface is not immersed; Figure 1 When the telescopic rod is extended to a longer length, the test piece platform 1 and the asphalt pavement test piece are immersed in the solution in the water storage container 3, simulating the condition of a soaked pavement. By adjusting the length of the telescopic rod, various conditions can be simulated, such as a non-immersed pavement and a fully or partially soaked pavement.

[0047] Preferably, the test piece table 1, the spray system 2 and the water storage container 3 are made of stainless steel.

[0048] Stainless steel is used, which has good corrosion resistance and stability, reducing the impact on subsequent detection.

[0049] Specifically, the water storage container 3 is a round basin, the bottom diameter of the water storage container 3 is 30-50 cm, the thickness of the water storage container 3 is 2-4 cm, and the thickness of the outer wall of the water storage container 3 is 1-2 cm;

[0050] The specimen table 1 is a round basin, and the bottom diameter of the specimen table 1 is 20-30 cm;

[0051] The nozzle 21 is a round nozzle, and the spray diameter of the nozzle 21 is in the range of 15-25 cm;

[0052] The height of the bracket 24 is 40-50 cm;

[0053] The telescopic length of the telescopic rod is 20-45 cm;

[0054] The water pump 22 and the bracket 24 are fixed in the water storage container 3 .

[0055] The entire device is fixed in the basin-shaped structure of the water storage container 3. Due to the above-mentioned size limitation, the structure is more stable and not easy to tip over.

[0056] Other structures and operations of the asphalt pavement testing device according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0057] Throughout this specification, references to terms such as "embodiment" and "example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A testing device for asphalt pavement, characterized by: It includes a test piece platform, a spraying system and a water storage container, wherein the test piece platform is used to carry the asphalt pavement test piece, the spraying system is used to spray the solution on the asphalt pavement test piece, and the water storage container is used to collect the solution after spraying the asphalt pavement test piece; The spraying system includes a flow regulating system and a temperature regulating system, wherein the flow regulating system is used to regulate the flow of the spraying solution, and the temperature regulating system is used to regulate the temperature of the spraying solution; The specimen table includes a lifting system, and the lifting system is used to control the position of the specimen table; The spray system includes a nozzle, a water pump, a conduit and a bracket. The specimen table is a basin with a plurality of through holes at the bottom. The nozzle is located directly above the specimen table within the vertical projection area. The specimen table is located directly above the water storage container within the vertical projection area. The inlet of the water pump is provided in the water storage container. The conduit is used to connect the nozzle and the outlet of the water pump. The bracket is fixed in the water storage container. The bracket is used to fix the nozzle, the water pump, the conduit and the specimen table.

2. The asphalt pavement testing device according to claim 1, characterized in that: The flow regulating system is a flow regulating valve.

3. The asphalt pavement testing device according to claim 1, characterized in that: The temperature regulation system is arranged on the nozzle. The nozzle is provided with two heat exchange interfaces. A spiral pipe is provided inside the nozzle. The two heat exchange interfaces are connected via the spiral pipe.

4. The asphalt pavement testing device according to claim 1, characterized in that: The temperature regulating system is arranged in the water storage container, and the temperature regulating system includes a heat exchange pipe.

5. The asphalt pavement testing device according to claim 1, characterized in that: The lifting system is a telescopic rod, one end of the telescopic rod is fixed to the spray system, and the other end of the telescopic rod is installed with a test piece table.

6. The asphalt pavement testing device according to claim 1, characterized in that: The test piece table, the spray system and the water storage container are made of stainless steel.

7. The asphalt pavement testing device according to claim 5, characterized in that: The water storage container is a round basin, the bottom diameter of the water storage container is 30-50 cm, the thickness of the water storage container is 2-4 cm, and the thickness of the outer wall of the water storage container is 1-2 cm; The specimen table is a round basin, and the bottom diameter of the specimen table is 20-30 cm; The nozzle is a round nozzle, and the spray diameter range of the nozzle is 15-25 cm; The height of the bracket is 40-50 cm; The telescopic length of the telescopic rod is 20-45 cm; The water pump and the bracket are fixed in the water storage container.

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