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Test apparatus and test method for radon exhalation rate of building bulk material and radon exhalation rate during neutralization

The technology of a radon precipitation rate and a testing device is applied in the field of devices for testing the radon precipitation rate of building blocks and the radon precipitation rate of neutralized building blocks, and can solve problems such as the influence of the radon precipitation rate on the environment that is not involved, and the like, To achieve the effect of simple structure and convenient operation

Pending Publication Date: 2018-11-06
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, people only consider the impact of the radon release rate of building blocks on the environment, and do not involve the impact of the radon release rate of building blocks on the environment after neutralization

Method used

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  • Test apparatus and test method for radon exhalation rate of building bulk material and radon exhalation rate during neutralization
  • Test apparatus and test method for radon exhalation rate of building bulk material and radon exhalation rate during neutralization
  • Test apparatus and test method for radon exhalation rate of building bulk material and radon exhalation rate during neutralization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, testing device for radon exhalation rate of building blocks and neutral radon exhalation rate, including building block material holding box 1, box cover 2, sealing plate 3, sample support 4, radon measuring instrument 5, drying tube 6 and hose 8.

[0030] The building block holding box 1 is a rectangular box with one side opening, the bottom of which is provided with a valved drain pipe 1-2, and the liquid inlet on the box wall is provided with a valved liquid inlet pipe 1 -1, the liquid inlet pipe 1-1 is threadedly connected to the liquid inlet on the tank wall, one end of the liquid inlet pipe 1-1 extends into the building block storage box 1, and the height of the liquid inlet on the tank wall should be higher The surface height of the radon precipitation surface 9-1 of the building block material 9 to be measured is placed in the building block material holding box 1.

[0031] Described case cover 2 is provided with air outlet pipe 2-1 and air inlet ...

Embodiment 2

[0037] Embodiment two, when adopting building block material radon exhalation rate and neutralization radon exhalation rate testing device to test the radon exhalation rate of building block material, sample support 4 is put into building block material holding box 1, will wait for The test building blocks 9 are placed on the sample support 4, then cover the box cover 2, and press it tightly with screws, close the valve to ensure sealing, the building block storage box 1, the drying tube 6 and the radon measuring instrument 5 form a closed loop cycle.

[0038] During the test, the radon atoms in the building block 9 to be tested escape the surface of the building block 9 to be tested and enter the building block storage box 1 under the action of diffusion and seepage. The radon in the block holding box 1 is pumped into the measuring room of the radon measuring instrument 5 through the drying pipe 6 for measurement, and the radon exhalation rate of the building block 9 to be me...

Embodiment 3

[0039] Embodiment 3, when using the radon exhalation rate of building blocks and the neutral radon exhalation rate testing device to test the radon exhalation rate of neutralized building blocks, put the sample holder 4 into the building block holding box 1 , the building blocks 9 to be tested are placed on the sample support 4, the sealing plate 3 is placed on the building blocks 9 to be tested, and the surrounding area of ​​the sealing plate 3 and the wall of the building block storage box 1 are sealed. The contact surface between the periphery of the plate 3 rectangular cavity 3-1 and the building block 9 to be tested is sealed with a sealant, one end of the hose 8 is connected to the liquid inlet pipe 1-1, and the other end of the hose 8 is connected to the inlet on the sealing plate 3. Connect the liquid joint 3-2, then cover the box cover 2, and press it tightly with screws, close the valve to ensure sealing, and the cavity on the sealing plate 3 in the building block hol...

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Abstract

A test apparatus and a test method for radon exhalation rate of building bulk material and radon exhalation rate during neutralization. The test apparatus includes a building bulk material box, a boxcover, a seal board, a test sample holder, a radon detector, a drying pipe, and a hose. The box cover covers the building bulk material box. A gas inlet of the drying pipe is connected to a gas outletpipe on the box cover and a gas outlet of same is connected to the inlet of the radon detector; the gas outlet of the radon detector is connected to the gas inlet pipe on the box cover. During radonexhalation rate test, the building bulk material is placed on the test sample holder in the box and the radon detector detects radon entering a test chamber; according to a radon concentration increase curve, radon exhalation rate of the building bulk material in different time sections is obtained; during radon exhalation rate during neutralization, the seal board is placed on the building bulk material and is sealed with sealant; then a NaHCO3 saturated solution is added and the radon detector detects radon entering the test chamber; according to the radon concentration increase curve, the radon exhalation rate of the building bulk material in different time sections during the neutralization.

Description

technical field [0001] The invention relates to the technical field of building materials detection, in particular to a device and a testing method for testing the radon exhalation rate of building blocks and the radon exudation rate of neutralized building blocks. Background technique [0002] At present, due to the application of a large number of industrial waste residues in new building blocks, the content of natural radionuclides has increased significantly, resulting in high or even excessive indoor radon concentrations. In addition, with the impact of the environment and climate, building blocks will inevitably have durability problems such as neutralization, which will cause changes in the internal pore structure of the material, and the pore structure is the direct and most fundamental factor affecting radon precipitation. [0003] The building blocks are autoclaved aerated concrete blocks, fly ash bricks, coal gangue bricks, etc. The average level of radon release ...

Claims

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Application Information

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IPC IPC(8): G01N15/00
CPCG01N15/00G01N2015/0011Y02A50/20
Inventor 杨蓉张晓文王科
Owner NANHUA UNIV
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