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Intelligent freeze-thaw cycle test device

A freeze-thaw cycle and test device technology, applied in the direction of measuring devices, material inspection products, instruments, etc., can solve the problems that affect the accuracy of test results, increase the error probability, and consume a lot of manpower, so as to avoid human interference factors and improve Quality and efficiency, to achieve the effect of automation

Active Publication Date: 2021-12-07
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the freeze-thaw cycle tests carried out in the laboratory are manually set out and sampled. For some samples with a long freeze-thaw cycle, such as the freeze-thaw cycle It takes a lot of manpower to reach half a year or even longer
At the same time, with the extension of the freeze-thaw cycle, manual sampling and setting out may lead to an increase in the error probability, which affects the accuracy of the test results

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 , figure 2 The shown intelligent freeze-thaw cycle test device includes a freeze-thaw cycle test chamber 1, at least two telescopic sample tray mechanisms arranged side by side in the freeze-thaw cycle test chamber 1 from top to bottom, and a telescopic sample tray mechanism A matching telescopic control system and a combined automatic door arranged on one side of the freeze-thaw cycle test chamber 1 and adapted to the telescopic sample tray mechanism.

[0031] Wherein, in the freeze-thaw cycle test chamber 1, two retractable sample tray mechanisms are arranged side by side one above the other.

[0032] The retractable sample tray mechanism includes a sample tray 2 horizontally arranged in the freeze-thaw cycle test chamber 1 and a telescopic rod 3 arranged at the end of the sample tray 2 , and the telescopic control system is adapted to the telescopic rod 3 . Both sides of the sample tray 2 are provided with rollers 4, such as image 3 As shown, th...

Embodiment 2

[0037] Adopt the device among the embodiment 1 to carry out the freeze-thaw cycle test of concrete, process is as follows:

[0038] First mix the formed concrete. Concrete is the mortar used in construction engineering. It is mainly composed of cementitious materials, coarse aggregate, fine aggregate and water in a certain proportion. The performance of building concrete materials can be adjusted according to building requirements and relevant specifications. The formulation and properties of the concrete are not limited.

[0039] After the concrete is molded and maintained, put it into two sample trays 2 respectively, and set the temperature, cycle time, and cycle times required for the freeze-thaw cycle through the control panel 14 . In this example, the low temperature of sample A is set to -20°C, the high temperature is set to 50°C, the cycle time is set to 6h, and the number of cycles is 500 times; the low temperature of sample B is set to -20°C, and the high temperature...

Embodiment 3

[0044] Adopt the device among the embodiment 1 to carry out the freeze-thaw cycle test of concrete, process is as follows:

[0045] After the concrete is molded and maintained, put it into two sample trays 2 respectively, and set the temperature, cycle time, and cycle times required for the freeze-thaw cycle through the control panel 14 . In this embodiment, samples C and D are set as follows: the low temperature is -20°C, the high temperature is room temperature, the cycle time is 5 hours, and the number of cycles is 500 times.

[0046] In this embodiment, the freeze-thaw cycle test chamber 1 only uses the low-temperature freezing function, and the thawing step is realized at room temperature outside the device.

[0047] (a) After freezing for 5 hours, the time controller 10 controls the upper contact of the electromagnetic relay 11 to contact the upper contact plate 12, the upper telescopic rod 3 starts to stretch out, and the combined automatic door opens automatically, and...

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Abstract

The invention relates to an intelligent freeze-thaw cycle test device. The device comprises a freeze-thaw cycle test box, at least two telescopic sample disc mechanisms arranged in the freeze-thaw cycle test box side by side from top to bottom, a telescopic control system matched with the telescopic sample disc mechanisms, and a combined automatic door which is arranged on one side of the freeze-thaw cycle test box and matched with the telescopic sample disc mechanisms. Compared with the prior art, the device can replace a traditional manual test mode, human interference factors are effectively avoided, the automation of the freeze-thaw cycle test is achieved, and the test quality and efficiency are improved.

Description

technical field [0001] The invention belongs to the technical field of civil engineering and concrete frost resistance evaluation test, and relates to an intelligent freeze-thaw cycle test device. Background technique [0002] Concrete has been widely used in civil and water conservancy projects due to its high cost performance, convenient construction and high durability. However, when used in severe cold and freeze-thaw environments, the mechanical properties of concrete will be reduced, and in severe cases, it will even affect the structural safety. Therefore, the number of freeze-thaw cycles is often used in engineering to evaluate the frost resistance of concrete. [0003] At present, most of the freeze-thaw cycle tests carried out in the laboratory are manually set out and sampled. For some samples with a long freeze-thaw cycle, for example, the freeze-thaw cycle can reach half a year or even longer, which requires a lot of manpower. At the same time, with the extens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00G01N33/38
CPCG01N25/00G01N33/383
Inventor 杨正宏杨燕吴凯于龙徐玲琳顾海涛王顺风
Owner TONGJI UNIV
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