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A comprehensive tester and method for testing salt expansion and temperature expansion of semi-rigid base

A technology of semi-rigid base and comprehensive tester, which is applied in the preparation of test samples, instruments, measuring devices, etc., can solve the problems of the lack of research on the high-temperature temperature field of the semi-rigid base due to the cumulative effect of salt expansion and temperature expansion on the semi-rigid base, Achieve reasonable structure design, reduce energy loss and improve accuracy

Active Publication Date: 2021-11-23
CHANGAN UNIV
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Problems solved by technology

There is a lack of research on the cumulative effect of salt expansion and temperature expansion on semi-rigid bases and the high-temperature temperature field of semi-rigid bases

Method used

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  • A comprehensive tester and method for testing salt expansion and temperature expansion of semi-rigid base
  • A comprehensive tester and method for testing salt expansion and temperature expansion of semi-rigid base
  • A comprehensive tester and method for testing salt expansion and temperature expansion of semi-rigid base

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment, and its content is explanation of the present invention rather than limitation:

[0033] A kind of comprehensive tester for testing semi-rigid base layer salt expansion and temperature expansion of the present invention, such as figure 1 , including temperature and humidity test bar 2, test chamber 4, refrigeration / heating system 8 and sample cylinder 11; The disassembled connection has a heat transfer cover plate 12, such as figure 2 , the heat transfer cover 12 is a hollow structure, and the heat transfer cover 12 is provided with a level, a temperature and humidity test through hole 14, an expansion test through hole 15-1, an expansion force test through hole 15-2, and an output pipe interface 16- 1 and the return pipe interface 16-2, the output pipe interface 16-1 and the return pipe interface 16-2 communicate with the inner cavity of t...

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Abstract

The invention discloses a comprehensive tester and method for testing the salt expansion and temperature expansion of a semi-rigid base, belonging to the technical field of test equipment. Including temperature and humidity test rod, test chamber, refrigeration / heating system and sample cylinder; the salt-containing semi-rigid base layer sample is installed in the sample cylinder, and the cold / heat medium is input into the heat transfer cover plate through the refrigeration / heating system, and the heat transfer Heat transfer occurs between the thermal cover plate and the salt-containing semi-rigid base sample to simulate the actual road surface heating. The pressure sensor detects the expansion force of the salt-containing semi-rigid base sample, and the displacement sensor detects the salt-containing semi-rigid base sample. At the same time, through the temperature and humidity test rod, the internal temperature field change, water and salt migration, temperature expansion and salt expansion characteristics of the salt-containing semi-rigid base can be tested. The structure design of the device is reasonable, can better simulate the actual road conditions, and provide theoretical basis and practical guidance for the study of the arching phenomenon of the semi-rigid base.

Description

technical field [0001] The invention belongs to the technical field of test equipment, and in particular relates to a comprehensive tester and a method for testing salt expansion and temperature expansion of a semi-rigid base. Background technique [0002] In many arid desert areas in recent years, the phenomenon of bulging and cracking of high-grade semi-rigid base asphalt pavement has appeared one after another. Its disease arches along the full section of the cross-section of the road surface, and its arching height can reach 6-10cm, which has a strong impact on driving safety and the service life of the road. The study found that the arch expansion of the semi-rigid base asphalt pavement is mainly caused by the cumulative effect of salt expansion and temperature expansion of the semi-rigid base. Therefore, the research on the characteristics of salt expansion and temperature expansion of semi-rigid base materials is a problem that cannot be ignored. [0003] According ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/16G01N1/28
CPCG01N1/286G01N25/16
Inventor 吴旺杰王选仓赵伦卢小庆张梦媛叶宏宇房娜仁樊振阳丁龙亭赵静张潇月周鼎淇宋亮田秋林陆军张守林朱世煜胡士清
Owner CHANGAN UNIV
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