Concrete impermeability test method and test apparatus thereof

Abstract

The invention provides a concrete impermeability test method and a test apparatus thereof. The test method comprises the following steps: fixedly connecting one end of a pre-embedded pressure leading tube with a concrete sample through pouring, connecting the other end of the pre-embedded pressure leading tube with a water tube, allowing pressure water to go through the pre-embedded pressure leading tube and to enter test concrete, and determining the water pressure of the water tube, which is the test pressure, when water infiltrates from the periphery of the concrete sample. The invention also relates to the concrete impermeability test apparatus. The method and the apparatus are adopted to carry out concrete sample impermeability test without sealing the sample, so the problem of difficult sealing between the sample and a frame test mold in the concrete sample impermeability test process is solved, the success rate of impermeability tests is improved, the operating flow is simplified, the test time is shortened, the water seepage path is visually reflected, and the practicality of an impermeability tester in engineering is improved.

Description

technical field [0001] The invention relates to a detection method and a detection device for concrete anti-seepage performance, in particular to a concrete anti-seepage detection method and a detection device. Background technique [0002] Impervious concrete is widely used in hydraulic construction, underwater, underwater, underground and other construction projects with impermeability requirements (such as dam concrete, tunnel support concrete, subway support concrete, etc.). [0003] The structure and working principle of the existing concrete impermeability meter: [0004] For example, the existing HP-4.0 concrete impermeability tester uses the principle of equal pressure in each part of the pipeline system connected to the sealed container (water head is negligible), applies pressure with a water pump, and maintains the pressure at the specified value through an intelligent numerical control meter. The detection device for testing within the range. It is mainly compo...

AI Technical Summary

Problems solved by technology

[0018] 1. Due to the long sealing time between the frame test mold and the sample, the sealing process is complicated, and the sealing is very difficult, so it cannot be guaranteed that the test sample and the frame test mold are completely sealed during the test, so that the pressure water may flow from the sample during the test. The gap between the sealing area and the test mold of the frame seeps out, which leads to the failure of the test or the success of the test, but it is accidental

[0019] 2. Due to the penetration path of pressure water in the sample during the test or after the test is completed (the existing penetrometer does not exclude water from the upper end of the sealing layer close to the top surface of the sample, the false penetration from the weak concrete layer to the concrete surface Phenomenon) observation is difficult, the sample needs to be taken out from the frame test mold, and placed on the press to split the sample evenly in half and then observe the path of pressure water infiltration in the sample. The whole process is complicated to operate, thus It increases the difficulty of the test operation, and the sample is easily damaged in the process of splitting the sample

[0020] 3. Since the test cannot be terminated until water seepage occurs on the end surface of the third sample during the test, the water seepage at the end of the test may be due to the poor intermittent sealing effect between the frame test mold and the sample, forming a water seepage channel and the top surface of the sample Local concrete honeycomb pockmarks and other etiological couplings lead to false water seepage, which leads to distortion of the results of the impermeability test

However, the structure of this device is complex and the sealing reliability is uncertain

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