Radon resisting property detecting device and manufacturing method of test sample

Abstract

The invention discloses a radon resisting property detecting device and a manufacturing method of a test sample, belonging to the technical field of building decorative material detection. The device comprises a radon source tank, a test piece clamp, a locking device, a radon detecting instrument and a radium-contained substance. An exhaust valve is arranged at the lower part of the body of the radon source tank; a tank cover of the radon source tank is provided with the test piece clamp connected with a butted joint plate which is provided with an annular groove provided with a sealing ring; the tank cover is also provided with an automatic closing device which is used for realizing the automatic closing at the position of a tank cover connecting plate when the test piece clamp is moved; the radium-contained substance is arranged in the radon source tank; and the radon source tank is connected with the test piece clamp or the radon source tank by a pipeline. The device is simple in structure, low in construction cost and running cost, and the manufacturing method of the test sample is simple in operation and low in labor intensity; and in the invention, the detection is easy to implement, and the detection efficiency is high.

Description

Technical field: [0001] The invention relates to a radon barrier performance detection device and a sample manufacturing method, belonging to the technical field of building decoration materials testing. Background technique: [0002] Radon is an inert gas, and radon and its decay progeny will cause radiation damage to the human body. With the development of science and technology, people are increasingly aware that radon in the environment seriously endangers human health. The International Commission on Radiological Protection estimates that 10% of public lung cancer can be attributed to the exposure of radon and its progeny. Both the World Health Organization and the International Atomic Energy Agency believe that radon in the air is one of the causes of human cancer and the second cause of lung cancer (smoking is the first cause). The International Agency for Research on Cancer classifies radon as a Group I carcinogen. Due to the high radon release rate of building mat...

AI Technical Summary

Problems solved by technology

And such operations often need to be repeated many times), so sample preparation is very time-consuming

Moreover, the test process of the radon exhalation rate of common building materials is relatively long (it is necessary to test the change of radon concentration until it is close to saturation), so it usually takes 15 days to test a radon-proof coating sample.

[0006] 2. It is difficult to operate the closed test piece - since the general reference test piece has 6 planes, as long as one plane is not sealed tightly during the closed operation, the test will fail

[0007] 3. The test piece is easy to be damaged - the test piece is generally an aerated concrete block, and the sealed test piece is easy to bump into the corners when it is transported. Because the outside of the test piece is soft and the inside is hard, it is easy to cause an external sealing film when bumping broken, resulting in test failure

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