Multifunctional impermeability tester and concrete comprehensive impermeability test system comprising the same

Abstract

The invention relates to a multifunctional impermeability tester. A water seepage resistance test sensor comprises a test electrode unit, an insulating interlayer unit and a thermistor. The test electrode unit is composed of a plurality of annular test electrodes. The insulating interlayer unit comprises a plurality of annular insulating sheets. The annular test electrodes and the annular insulation sheets are arranged at intervals one by one and are in complete contact with each other so that a cylindrical test channel is formed by enclosing the annular test electrodes and the annular insulation sheets together. And the thermistor is arranged in the cylindrical test channel and is kept in a non-contact state with the annular test electrodes and the annular insulation sheets. In an actual test, the water seepage resistance test sensor reflects the descending speed of the water liquid level by utilizing the resistance change of each annular test electrode of the water seepage resistance test sensor, and indirectly obtains the water seepage resistance of the concrete to be tested by utilizing the liquid permeation resistance Darcy law and the ion permeation resistance Fick law. In addition, the invention also relates to a concrete comprehensive impermeability test system.

Description

technical field [0001] The invention relates to the technical field of comprehensive anti-seepage performance testing of concrete, in particular to a multifunctional anti-seepage tester and a comprehensive concrete anti-seepage test system including the same. Background technique [0002] The anti-permeability of concrete is a key parameter that reflects the durability and long-term performance of concrete. It is very necessary to detect and estimate the anti-permeation performance of concrete. The anti-permeability of concrete indicates the ability of concrete to resist the erosion of liquids, gases or harmful ions. After harmful liquids, gases or ions penetrate into the interior of the concrete, it will cause adverse effects such as concrete expansion, cracking, water penetration, and internal steel corrosion. The impermeability of concrete mainly includes the following three types, namely water permeability resistance, air permeability resistance and chloride ion permeabi...

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Problems solved by technology

[0004] For another example, Chinese invention patent CN113310878A discloses a concrete impermeability testing device, including a test bench, a detachable mold arranged on the test bench, and a pressurized liquid pipeline leading to one end of the mold near the ground. The position corresponding to the pressurized liquid pipeline is provided with a liquid inlet hole, which is characterized in that the pressurized liquid leading to the liquid inlet hole from the pressurized liquid pipeline is a contrast liquid. The design structure of the performance testing device is relatively complicated, and it is difficult to ensure that the water pressure is always kept at a constant value during the test process in the test project, which will inevitably affect the accuracy of the test structure, and a lot of manpower and material resources are required before the test work is officially carried out. To detect the state of pressure sources, pipelines and control valves; in addition, the existing concrete impermeability tester is only suitable for testing the impermeability of relatively dense concrete in the natural state, and cannot test the internal damage, with microscopic Impermeability of Cracked Concrete Elements

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