Multi-medium coupling variable-temperature pressure corrosion test device and test method
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A test device and multi-media technology, applied in the field of multi-media coupling variable temperature pressure dissolution test device, can solve problems such as temperature fluctuation of pressure water, and achieve the effects of accurate evaluation, strong operability and clear principle
Pending Publication Date: 2022-06-03
NANJING BOTE BUILDING MATERIALS CO LTD +2
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Problems solved by technology
[0005] However, almost all hydraulic concrete structures in actual engineering are affected by water pressure, and the temperature of the pressure water fluctuates within a certain range with changes in seasons, etc.
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Embodiment 1
[0068] A multi-medium coupling variable temperature pressure corrosion test device, which includes the following components:
[0069] Including pressure control system, temperature control system, pressure supply valve, pressure relief valve, medium tank, drive motor, pressure pump, condenser, connecting pipe, sample cylinder, graduated cylinder, frame I and frame II;
[0070] Pressure control system: the pressure control range is 0~8MPa, and the accuracy is ±0.2%;
[0071] Temperature control system: the temperature control range is 5 to 80°C, and the accuracy is ±1°C;
[0072] The medium box, sample cylinder and connecting pipe are made of 316 stainless steel, which can hold various acid, alkali and salt solutions;
[0073] The size of the sample tube is ф150mm*150mm, and the accuracy is ±4mm, with a total of 6 pieces.
[0074] The corrosion resistance test and evaluation of the concrete specimens of a certain project are carried out, and they are sealed with paraffin wax....
Embodiment 2
[0077] A multi-medium coupling variable temperature pressure corrosion test device, which includes the following components:
[0078] Including pressure control system, temperature control system, pressure supply valve, pressure relief valve, medium tank, drive motor, pressure pump, condenser, connecting pipe, sample cylinder, graduated cylinder, frame I and frame II;
[0079] Pressure control system: the pressure control range is 0~10MPa, and the accuracy is ±0.2%;
[0080] Temperature control system: the temperature control range is -5 to 100°C, and the accuracy is ±1°C;
[0081] The medium box, sample cylinder and connecting pipe are made of 304 stainless steel, which can hold most acid, alkali and salt solutions;
[0082] The size of the sample tube is ф100mm*100mm, and the accuracy is ±4mm, with a total of 6 pieces.
[0083] The corrosion resistance test and evaluation of the concrete specimens of a certain project are carried out, and the asphalt is sealed. The sample ...
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Abstract
The invention discloses a multi-medium coupling variable-temperature pressure corrosion test device and a test method. The device mainly comprises a pressure control system, a temperature control system, a medium box, a driving motor, a pressure pump, a condenser, a pressure gauge, a connecting pipe, a sample cylinder, a measuring cylinder and a frame, a medium box, a driving motor, a pressure pump and a pressure gauge in the frame I are connected in sequence, and the pressure pump and the pressure gauge are connected with a pressure control system; the temperature control system is connected with the heating wire, the temperature sensor and the condenser in the medium box at the same time; the water inlet interface on the sample cylinder in the frame II is connected with the medium box through a connecting pipe; and the measuring cylinder is positioned below the water outlet interface below the sample cylinder. According to the device, the type, temperature and pressure of a corrosion medium can be regulated and controlled at the same time; the 316 stainless steel solution device can be used for containing various erosion media such as acid, alkali and salt, so that the simulation experiment range is enlarged; the device can be used for rapidly and accurately evaluating the corrosion resistance of the concrete.
Description
technical field [0001] The invention relates to the technical field of concrete durability performance test and evaluation, in particular to a multi-medium coupling variable temperature pressure corrosion test device and a test method. Background technique [0002] Dissolution is a common durability problem of concrete, which often occurs in hydraulic concrete projects such as groundwater and marine engineering, which seriously affects the durability of concrete structures. Concrete corrosion has different corrosion mechanisms according to different environmental conditions. [0003] The traditional method for corrosion evaluation of concrete is to form a large number of concrete specimens and immerse them in ultrapure water or ammonium nitrate solution for acceleration. The former has limited acceleration efficiency, while the latter will change the corrosion mechanism of concrete. The ultra-pure water immersion method requires a lot of energy, and the ammonium nitrate imm...
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