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Concrete gas permeability testing device and method

A gas permeability and testing device technology, which is applied in the direction of measuring devices, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problems of uncontrollable gas volume and sealing, shorten the test cycle and realize real-time Simple and fast effect of conversion and operation

Active Publication Date: 2017-08-18
CHINA THREE GORGES UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a concrete gas permeability test device and method to realize the gas permeability test of concrete and solve the technical problem that the existing instruments cannot control the gas volume and airtightness

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  • Concrete gas permeability testing device and method
  • Concrete gas permeability testing device and method
  • Concrete gas permeability testing device and method

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Embodiment Construction

[0031] Such as Figure 1~2 Among them, a concrete gas permeability testing device includes a piston container 1 and a sample container 5 for placing a sample 6. The upper end of the sample container 5 is connected to the top cover 3, and the piston container 1 is connected to the top cover 3 through a conduit and an air inlet valve 2. It is characterized in that the lower end of the sample container 5 is open, the outer periphery of the sample 6 is covered with a latex film 7, the lower end of the sample container 5 is connected to the air container 8, one side of the air container 8 is connected to the vacuum pump 10 through a conduit, and the gap between the air container 8 and the vacuum pump 10 is A pneumatic valve 9 is provided, and the other side of the gas container 8 is connected to a pressure transmitter 11 , and the pressure transmitter 11 is connected to a computer 12 .

[0032] The sample container 5 and the top cover 3 as well as the sample container 5 and the gas...

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Abstract

The invention provides a concrete gas permeability testing device and method. The device comprises a piston container and a sample container for placement of a sample, the upper end of the sample container is connected with a top cover, the piston container is connected with the top cover through a guide pipe and a gas incoming valve, the lower end of the sample container is open, a latex film sleeves the periphery of the sample, the lower end of the sample container is connected with a gas container, one side of the gas container is connected with a vacuum pump through the guide pipe, a pneumatic valve is arranged between the gas container and the vacuum pump, and the other side of the gas container is connected with a pressure transmitter which is connected with a computer. By utilizing the device, gas permeability of concrete can be tested, and the technical problem that existing instruments cannot control gas volume and sealability is solved.

Description

technical field [0001] The invention relates to the technical field of concrete permeability testing, in particular to a concrete gas permeability testing device and method. Background technique [0002] Concrete is a complex porous material and a permeable body. Many properties of concrete are to some extent related to the pore volume, pore structure and permeability of the concrete. As an important index to evaluate the durability of hydraulic concrete, permeability mainly includes water permeability and air permeability. Water permeability as an aggressive medium (Cl - , SO 4 2- etc.) is the main transmission medium and is the main indicator for evaluating the permeability of concrete. Gas permeability mainly includes CO 2 The carbonation effect of gases such as gas on concrete structures is also an important indicator for evaluating the permeability of concrete. [0003] Numerous studies have shown that for ordinary concrete, rapid permeability tests can be conduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/08
Inventor 刘刚童富果程庆超孟永东薛松
Owner CHINA THREE GORGES UNIV
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