Concrete freezing and thawing test device under coupling action of multiple environmental factors

A test device, concrete technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems such as a single concrete frost resistance test, and achieve the effect of convenient device movement and easy operation

Pending Publication Date: 2022-05-24
NORTHEAST FORESTRY UNIVERSITY
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Problems solved by technology

[0002] Freeze-thaw damage is one of the main factors affecting the durability of concrete structures. The existing test equipment can only achieve a single concrete frost resistance test, and the marine concrete structure in the

Method used

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  • Concrete freezing and thawing test device under coupling action of multiple environmental factors
  • Concrete freezing and thawing test device under coupling action of multiple environmental factors
  • Concrete freezing and thawing test device under coupling action of multiple environmental factors

Examples

Experimental program
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Embodiment

[0026] Example: Freeze-thaw test of concrete chloride salt under the coupling action of various environmental factors

[0027] Step 1: Determine the size of the test box according to the concrete size required for the test. The concrete specimen (this test uses 100mm×100mm×400mm) except one 100mm×400mm surface is reserved, and the other five surfaces are sealed with epoxy resin. Before the test, the specimen is pre-soaked to make it saturated. water.

[0028] Step 2: Fill the water tank with the required salt solution (3.5% NaCl solution is used this time), and select the gas / water port to connect CO 2 For the gas cylinder, open the door cover through the handle, and put the 100mm × 100mm × 400mm concrete specimen after standard curing for 28 days into the test box.

[0029] Step 3: The power switch, the temperature and humidity system, and the gas concentration monitoring system have been debugged with reference to the specific embodiments I, II, and III, respectively. Ope...

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Abstract

The invention discloses a concrete freezing and thawing test device under the coupling action of multiple environmental factors, which can simulate the environmental characteristics of an ocean underwater zone, a tidal zone, a splash zone and a salt mist zone in order to truly reflect the service state of a concrete structure in an ocean environment. The concrete durability test device under the multi-factor coupling action of dry-wet cycle, carbonization, salt mist and freeze-thaw cycle is realized, the structure is simple, the operation is convenient, the movement is flexible and convenient, and basic equipment is provided for systematically and comprehensively carrying out concrete durability research under the multi-environmental factor coupling action of the freeze-thaw cycle and the multi-environmental factor coupling action.

Description

technical field [0001] The invention relates to a concrete freeze-thaw test device under the coupling action of multiple environmental factors. Background technique [0002] Freeze-thaw damage is one of the main factors affecting the durability of concrete structures. The existing test device can only realize a single concrete frost resistance test, while the marine concrete structure in the actual marine environment is affected by multiple environmental factors. The existing research The simple superposition rather than coupling of multiple influencing factors based on multiple experimental devices is far from the actual situation. Therefore, the development of a concrete freeze-thaw test device under the coupling action of multiple environmental factors is an urgent problem to be solved. SUMMARY OF THE INVENTION [0003] Based on the above technical problems, the present invention proposes a concrete freeze-thaw test device under the coupling action of multiple environm...

Claims

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Application Information

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IPC IPC(8): G01N17/00
CPCG01N17/00G01N17/002
Inventor 张茂花马大男刘大志田泽农崔继印许荣华
Owner NORTHEAST FORESTRY UNIVERSITY
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