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Comprehensive tester and method for testing salt expansion and thermal expansion of semi-rigid base layer

A semi-rigid base layer and comprehensive tester technology, which is applied in the preparation of test samples, instruments, measuring devices, etc., can solve the problems of lack of salt expansion and thermal expansion accumulation effect of semi-rigid base layer, high temperature temperature field research of semi-rigid base layer, etc. To achieve the effect of reasonable structural design and improved accuracy

Active Publication Date: 2019-08-06
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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  • Comprehensive tester and method for testing salt expansion and thermal expansion of semi-rigid base layer
  • Comprehensive tester and method for testing salt expansion and thermal expansion of semi-rigid base layer
  • Comprehensive tester and method for testing salt expansion and thermal expansion of semi-rigid base layer

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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, which belongs to the technical field of test equipment, discloses a comprehensive tester and method for testing salt expansion and thermal expansion of a semi-rigid base layer. The tester comprises a temperature and humidity test rod, a test chamber, a refrigeration / heating system and a sample cylinder. A saliferous semi-rigid base layer test sample is installed in the sample cylinder. The refrigeration / heating system inputs a cold / heat medium into a heat transfer cover plate; and the heat transfer cover plate and the saliferous semi-rigid base layer test sample carry out heat transferring to simulate the actual road surface heating condition. A pressure sensor detects the expansibility of the saliferous semi-rigid base layer test sample; and a displacement sensor detects the expansion amount of the saliferous semi-rigid base layer test sample. Meanwhile, with the temperature and humidity test rod, the internal temperature field change, water-salt transferring, thermal expansion and salt expansion characteristics of the saliferous semi-rigid base layer test sample can be tested. The tester based on the reasonable structural design is capable of simulating the actualroad surface condition well, thereby providing the theoretical basis and practical guidance for studying the arch expansion phenomenon of the semi-rigid base layer.

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 Applications(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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