Low-temperature dry and wet circulating erosion device

A dry-wet cycle, low-temperature technology, used in measurement devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problems of low research efficiency and large human error, and achieve simple production and operation, low cost, and improved research. The effect of efficiency and accuracy

Inactive Publication Date: 2008-02-13
TONGJI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

When investigating seawater corrosion in low temperature and dry and wet environments, it is generally used to manually move test blocks in different environments, which has low research efficiency and large human errors

Method used

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  • Low-temperature dry and wet circulating erosion device

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1: Adopt commercially available timing alarm clock 1 and sound-activated delay switch 2, delay time is 2 minutes, load power 20W-200W; Adopt 5cm thick polystyrene board to make sound-proof sealing box 3, adopt commercially available 220L Refrigerated box 4, adopt stainless steel Saijo to make basket 5, adopt transparent plastic box as upper corrosion solution tank 7 and lower corrosion solution tank 8, adopt commercially available electronic valve 9 and water pump 10, water pump head is 5m, power 120W, the above-mentioned The device is assembled as shown in Figure 1. Among them, two sets of timing alarm clocks 1 and voice-activated delay switches 2 are respectively placed in different sound-proof sealed boxes 3, the power supplies of the electronic valve 9 and the water pump 10 are respectively connected to the two voice-activated delay switches 2, and the two baskets 5 respectively placed in the upper erosion solution tank 7 and the lower erosion solution ta...

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PUM

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Abstract

The invention relates to a low temperature dry-wet circulation erosion device, consisting of timing alarm clocks, sound control delay switches, sound insulation seal boxes, a refrigerator, baskets, erosion solution tanks, an electronic valve and a water pump. The top of the refrigerator is equipped with two sound insulation seal boxes. Every sound insulation seal box is equipped with a timing alarm clock and a sound control delay switch inside. An upper erosion solution tank and a lower erosion solution tank are arranged in the refrigerator. Baskets are arranged in the upper erosion solution tank and the lower erosion solution tank. The electronic valve is arranged on the bottom of the upper erosion solution tank. A water inlet of the water pump is arranged on one side of the lower erosion solution tank. A water outlet of the water pump is arranged above one side of the upper erosion solution tank. The powers of the electronic valve and the water pump are respectively connected with two sound control delay switches. The invention makes a sample repeatedly being on the circulation between the dry erosion solution and immersion erosion solution. The device can simulate the erosion effect of the dry-wet circulation on cement based products under the low temperature environment.

Description

technical field [0001] The invention relates to a low-temperature dry-wet cycle erosion device. Background technique [0002] In marine engineering in northern my country, seawater erosion damage to concrete in the tidal range zone is the most serious problem threatening the durability of the project. Crystallization pressure is formed, and finally expansion damage occurs. This kind of crystallization and expansion damage is much more serious in low temperature environment and alternating dry and wet conditions than in higher temperature environment or non-dry and wet alternate conditions. [0003] The solubility change of sulfate is more sensitive to temperature, the lower the temperature, the lower the solubility, the more crystals produced in seawater containing the same concentration of sulfate, the greater the expansion pressure; at the same time, in low temperature and humid environment, sulfate A chemical reaction with concrete may produce a paste-like product without...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00G01N33/38
Inventor 朱洪波王培铭
Owner TONGJI UNIV
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