Asphalt material self-healing performance evaluation device and method

An asphalt material and evaluation device technology, applied in the field of asphalt materials, can solve the problems of complex devices and methods, long test time, short test time, etc., and achieve the effects of easy acquisition, reduced test time, and high superiority

Active Publication Date: 2019-10-01
ZHENGZHOU UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the technical problems that the existing devices and methods for evaluating the self-healing ability of asphalt materials are relatively complicated, costly, and the test time is relatively long, the present invention proposes a device and method for evaluating the self-healing performance of asphalt materials, which utilizes capillary flow Diffusion theory is used to measure the self-healing performance of asphalt materials, with simple structure, low cost and short test time, which is suitable for actual road performance evaluation

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  • Asphalt material self-healing performance evaluation device and method
  • Asphalt material self-healing performance evaluation device and method
  • Asphalt material self-healing performance evaluation device and method

Examples

Experimental program
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Embodiment 1

[0040] Embodiment 1: as figure 1 and figure 2As shown, an asphalt material self-healing performance evaluation device includes an environmental chamber 1, and the environmental chamber 1 is used to provide a stable test environment for asphalt and asphalt test blocks used in the test. The upper part of the environmental box 1 is sealed and connected with the box body through the upper cover to ensure that the temperature in the environmental box maintains the set temperature and does not fluctuate in a large range due to external influences. The environmental chamber 1 is provided with a wetting test mechanism and a diffusion test mechanism. The wetting test mechanism is used to test the wettability of the asphalt test block, and the diffusion test mechanism is used to measure the molecular diffusion capacity of the asphalt test block. The wetting test mechanism includes a petri dish 2, which is provided with a support 3 for placing the asphalt test block in the petri dish 2...

Embodiment 2

[0046] Example 2, such as image 3 As shown, a method for evaluating the self-healing performance of asphalt materials, the steps are as follows:

[0047] Step 1: Clean the petri dish 2 and the support 3, adjust the temperature in the environmental chamber 1 to maintain the test temperature, put the dried petri dish 2 and the support 3 in the environmental chamber 1 for preheating.

[0048] The asphalt used in this example is 70# asphalt, and its three major indicators are shown in Table 1.

[0049] Table 1 Basic indicators of asphalt materials

[0050]

[0051] In the first step, use trichlorethylene or gasoline to clean the asphalt on the petri dish 2 and the support 3; after cleaning, put it in an oven, dry it at 105°C±0.5°C, and put it in the environmental box 1 after drying Preheat at 25°C. Adjust the liquid level and temperature in the environmental chamber 1 to keep the temperature at 25°C, the liquid level is lower than the height of the petri dish 2, and ensure ...

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Abstract

The invention provides an asphalt material self-healing performance evaluation device and method based on a capillary diffusion theory, which is used for solving the problems that an existing asphaltmaterial self-healing performance evaluation device and method is relatively complicated, relatively high in cost and relatively long in test time. The evaluation device comprises an environment box;a wetting testing mechanism and a diffusion testing mechanism are arranged in the environment box; the wetting testing mechanism comprises a culture dish; a support for placing an asphalt test block is arranged in the culture dish; a glass tube used for containing test asphalt is fixed on one side of the support; an open groove which is larger than the side surface of the asphalt test block is formed in one side of the glass tube; a baffle is arranged on the open groove; a handle is arranged at the upper part of the baffle; the diffusion testing mechanism comprises two opposite fixed ends; andthe two fixed ends are fixed on the two sides of the environment box through telescopic rods respectively. The device is simple in structure, low in cost, short in test duration and relatively accurate in test result, can be well used for evaluating the self-healing behavior of the asphalt material and is suitable for various practical materials in road engineering.

Description

technical field [0001] The invention relates to the technical field of asphalt materials, in particular to a device and method for evaluating the self-healing performance of asphalt materials, which are mainly tested for asphalt or asphalt mortar and asphalt mortar. Background technique [0002] In recent years, asphalt pavement has been used in most road designs in my country. With the rapid growth of my country's economic development, the use of asphalt materials has increased year by year, and asphalt has become an indispensable material in road engineering. Nowadays, the evaluation of the road performance of asphalt materials in our country does not take its self-healing performance into consideration, and there is a large margin in the design of roads, resulting in a certain amount of waste. The existing methods for evaluating the self-healing ability of asphalt materials are relatively complicated, there is no unified standard and method, and the cost is high, the requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/42
CPCG01N33/42Y02A30/30
Inventor 李瑞霞吴嘉慧张世兴汪德才齐泽民李佳辉
Owner ZHENGZHOU UNIV
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