Efficient testing instrument for water permeability of asphalt pavement
By designing an asphalt pavement permeability testing instrument that includes a base, measuring cylinder, tamping device, and permeability depth testing sensor, the problems of complex operation and low accuracy of existing instruments are solved, enabling rapid and accurate measurement of permeability performance and improving the quality control of road engineering.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-04-03
AI Technical Summary
Existing instruments for testing the permeability of asphalt pavements are complex to operate and have low measurement accuracy, failing to meet the need for rapid and accurate measurements and affecting the quality control of road engineering projects.
A highly efficient testing instrument was designed, comprising a base, measuring cylinder, tamping device, and a seepage depth sensor. It has a simple structure and can quickly and accurately measure the seepage performance of asphalt pavement.
It enables rapid and accurate measurement of the permeability of asphalt pavements, providing scientific and accurate reference data to improve road quality and service levels.
Smart Images

Figure CN224081444U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of road material performance testing equipment, and in particular to a high-efficiency testing instrument for the water permeability performance of asphalt pavement. Background Technology
[0002] The permeability of asphalt pavement refers to its ability to allow water to pass through the pavement material, and it is one of the key indicators for evaluating pavement quality. Good permeability helps the pavement drain water, reduces water accumulation, and thus improves driving safety. Furthermore, good permeability also helps extend the pavement's service life and reduce maintenance costs. However, there are currently some challenges in testing pavement permeability in my country. Although some instruments exist for testing pavement permeability, their operation is complex, and their measurement accuracy is not high, failing to meet the need for rapid and accurate measurements. This poses difficulties for quality control in pavement engineering and hinders the smooth progress of road construction projects.
[0003] Therefore, there is an urgent need for a high-efficiency testing instrument for the water permeability performance of asphalt pavement that can solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide an efficient testing instrument for the water permeability performance of asphalt pavement, which can quickly and accurately measure the water permeability performance of asphalt pavement.
[0005] To achieve the above objectives, this utility model provides the following solution:
[0006] This utility model provides a high-efficiency testing instrument for the water permeability performance of asphalt pavement, comprising:
[0007] The base has an opening at its bottom for contacting and communicating with the asphalt pavement to be tested.
[0008] A measuring cylinder, which is disposed on the upper part of the base, has openings at both the top and bottom for holding water;
[0009] A soil compactor, which is retractably mounted on the base for extending into the asphalt pavement to be tested;
[0010] A seepage depth test sensor is installed on the soil compactor to detect seepage data;
[0011] A data processor display screen is disposed on the side of the measuring cylinder and electrically connected to the seepage depth test sensor, for receiving seepage data, processing it, and displaying it.
[0012] Preferably, the base has a water outlet in the middle, which is connected to the measuring cylinder, and a switch is provided between the two.
[0013] Preferably, a sealing ring is provided at the switch.
[0014] Preferably, the measuring cylinder has a transparent structure.
[0015] Preferably, the volume of the graduated cylinder is 600 ml.
[0016] Preferably, the measuring cylinder has graduations on its side wall, with a graduation range of 100-500ml.
[0017] Preferably, the measuring cylinder has a water inlet at the top.
[0018] Preferably, the measuring cylinder is provided with a counterweight frame on its exterior.
[0019] The present invention achieves the following beneficial technical effects compared to the prior art:
[0020] This utility model provides a high-efficiency testing instrument for the water permeability performance of asphalt pavement, which has the following characteristics:
[0021] 1. It has a simple structure and is easy to operate, enabling it to quickly and accurately measure the water permeability of asphalt pavement.
[0022] 2. It can quickly process and output data to display the water permeability rate of asphalt pavement.
[0023] 3. This instrument has high practicality and economic benefits.
[0024] This utility model provides a high-efficiency testing instrument for the permeability performance of asphalt pavements. Its design emphasizes simplicity, making the structure easy to understand, use, and maintain. Furthermore, its operation is designed to be highly convenient, allowing even non-professionals to quickly learn and use it correctly. In addition, the instrument's greatest advantage is its ability to intuitively and quantitatively reflect the permeability performance of asphalt pavements, avoiding the subjectivity and uncertainty of traditional testing methods. This characteristic makes the instrument an important tool for asphalt pavement design and maintenance, providing scientific and accurate reference data for pavement engineering. Therefore, this instrument has broad application prospects in the field of road engineering and is of great significance for improving road quality and service levels.
[0025] The maximum applicability of this invention is to quickly and accurately measure the permeability of road surfaces.
[0026] The preferred scope of the present invention is mainly applicable to the rapid and accurate measurement of the water permeability of asphalt pavements. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 A schematic diagram of the structure of the high-efficiency testing instrument for the water permeability performance of asphalt pavement provided by this utility model;
[0029] In the diagram: 1. Inlet; 2. Measuring cylinder; 3. Weight frame; 4. Data processor display screen; 5. Seepage depth test sensor; 6. Tamper; 7. Switch; 8. Outlet; 9. Base. Detailed Implementation
[0030] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] The purpose of this invention is to provide an efficient testing instrument for the water permeability performance of asphalt pavement, so as to solve the problems existing in the prior art.
[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0033] Example 1:
[0034] This embodiment provides a high-efficiency testing instrument for the water permeability performance of asphalt pavement, such as... Figure 1 As shown, it includes:
[0035] The base 9 has an opening at its bottom for contacting and communicating with the asphalt pavement to be tested, thus providing stable support for water seepage.
[0036] Measuring cylinder 2 is located on the upper part of the base 9, and has openings at both the top and bottom for holding water;
[0037] The soil compactor 6 is telescopically mounted on the base 9 and is used to extend into the asphalt pavement to be tested. It can be extended when in use and retracted when not in use.
[0038] The seepage depth test sensor 5 is installed on the soil compactor 6 and is used to detect seepage data.
[0039] The data processor display screen 4 is located on the side of the measuring cylinder 2 and is electrically connected to the seepage depth test sensor 5. It is used to receive seepage data, process it, and then display it.
[0040] In one implementation, a water outlet 8 is provided in the middle of the base 9. The water outlet 8 is connected to the measuring cylinder 2, and a switch 7 is provided between the two. By opening the switch 7, the water in the measuring cylinder 2 can seep into the asphalt pavement to be tested through the water outlet 8.
[0041] As one implementation method, a sealing ring is provided at switch 7 to improve the sealing effect.
[0042] As one implementation method, the measuring cylinder 2 adopts a transparent structure, which can be made of plexiglass.
[0043] In one implementation, the volume of graduated cylinder 2 is 600ml.
[0044] As one implementation, the measuring cylinder 2 has graduations on its side wall, with a graduation range of 100-500ml.
[0045] In one embodiment, the top of the measuring cylinder 2 is provided with a water inlet 1 for adding water.
[0046] As one implementation method, the measuring cylinder 2 is provided with a weight frame 3 on the outside, which can be made of stainless steel to ensure stability during the test.
[0047] This utility model provides an efficient testing instrument for the water permeability performance of asphalt pavement. During testing, the test location is first selected using a random point selection method for highway subgrade and pavement field testing, and the surface is cleaned. Then, a thin layer of sealing material is applied along the circle of the base 9 on the pavement, and the base 9 is pressed onto the sealing material circle. The weight frame 3 is then placed on top. Next, the switch 7 is turned off, water is poured into the measuring cylinder above the instrument until it is full, and the tamper 7 is turned on to insert it into the pavement. Then, the switch 7 is quickly turned back on, and the water droplets are observed. Based on the water droplet penetration data transmitted by the water depth testing sensor 5, the data processor display screen 4 can determine the water permeability performance of the asphalt pavement, process the data, and output the pavement permeability rate.
[0048] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A high-efficiency testing instrument for the water permeability performance of asphalt pavement, characterized in that: The utility model relates to a water permeability depth testing device for asphalt pavement, which comprises a base, a measuring cylinder, a soil tamper, a water permeability depth testing sensor and a data processor display screen. The bottom of the base is provided with an opening for contacting and communicating with the asphalt pavement to be tested. The measuring cylinder is arranged on the upper part of the base and is provided with openings at the top and bottom for containing water. The soil tamper is telescopically arranged on the base and is used for extending into the asphalt pavement to be tested. The water permeability depth testing sensor is arranged on the soil tamper and is used for detecting water permeability data. The data processor display screen is arranged on the side of the measuring cylinder and is electrically connected with the water permeability depth testing sensor for receiving and processing water permeability data and displaying the processed data.
2. The high-efficiency test instrument for water permeability of asphalt pavement according to claim 1, characterized in that: A water outlet is formed in the middle of the base and communicates with the measuring cylinder, and a switch is arranged between the water outlet and the measuring cylinder.
3. The high-efficiency test instrument for water permeability of asphalt pavement according to claim 2, characterized in that: A sealing ring is arranged at the switch.
4. The high-efficiency test instrument for water permeability of asphalt pavement according to claim 1, characterized in that: The measuring cylinder is made of transparent material.
5. The high-efficiency test instrument for water permeability of asphalt pavement according to claim 1, characterized in that: The volume of the measuring cylinder is 600ml.
6. The high-efficiency test instrument for water permeability of asphalt pavement according to claim 1, characterized in that: The side wall of the measuring cylinder is provided with a scale ranging from 100ml to 500ml.
7. The high-efficiency test instrument for water permeability of asphalt pavement according to claim 1, characterized in that: The top of the measuring cylinder is provided with a water inlet.
8. The high-efficiency testing instrument for water permeability of asphalt pavement according to any one of claims 1-7, characterized in that: A weight frame is arranged on the outside of the measuring cylinder.