Bilateral frost-heaving test device for porous materials and testing method

A technique for porous materials and frost heaving tests, applied in measuring devices, analytical materials, thermal analysis of materials, etc.

Active Publication Date: 2015-10-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem in the prior art that the temperature field, moisture field and deformation field of the porous material change during the freezing and melting process, and to evaluate the test device for the ability of the porous material to resist frost heaving, the present invention further provides a kind of Bilateral frost heaving and thawing test device for porous materials

Method used

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  • Bilateral frost-heaving test device for porous materials and testing method
  • Bilateral frost-heaving test device for porous materials and testing method
  • Bilateral frost-heaving test device for porous materials and testing method

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specific Embodiment approach 1

[0021] Specific implementation mode one: combine Figure 1-Figure 9 Description of this embodiment, a bilateral frost heaving test device and test method for porous materials, which includes a press 1, a constant temperature and humidity curing box 3, a reaction force frame top plate 4, a reaction force frame support 5, a first storage Water test tube 6, the second water storage test tube 7, cylinder 8, base 9, frost heaving test piece package assembly 10, pressure head 11, test tube rack 12, LVDT displacement sensor 18, pressure sensor 19, data collector 20 and two cooling The bath circulator 2; the LVDT displacement sensor 18 is installed on the cylinder body of the cylinder 8 close to the piston rod, the top plate 4 of the reaction force frame is fixedly installed on the top of the frame support 5, and the base 9 is fixedly installed on the bottom end of the reaction force frame support 5. The expansion test piece set assembly 10 is fixedly installed on the base 9, the cyli...

specific Embodiment approach 2

[0022] Specific implementation mode two: combination Figure 1-Figure 9 Describe this embodiment, a bilateral frost heave test device and test method for porous materials, the frost heave test piece package assembly 10 includes a first temperature control plate 13, a second temperature control plate 14, a leather sheath 15, two A permeable stone 16, a plurality of temperature sensors and a plurality of heat insulating rings 17; the leather sheath 15 is a cylindrical leather sheath, and a plurality of heat insulating rings 17 are arranged vertically from top to bottom to form a circular sleeve; the second temperature control plate 14, The two permeable stones 16 and the first temperature control plate 13 are sequentially arranged in the circular sleeve from bottom to top, the porous material to be tested is arranged between the two permeable stones 16, and a plurality of temperature sensors are installed on the porous material to be tested. The top of the holster 15 is set on t...

specific Embodiment approach 3

[0023] Specific implementation mode three: combination figure 1 , figure 2 , Figure 4 and Figure 5 Describe this embodiment, a double-sided frost heaving test device and test method for porous materials, the first temperature control plate 13 is a circular plate, and the inside of the circular plate is processed with a first serpentine sealing groove along the radial direction 13-1, the top of the circular plate is processed with the first water bath circulation fluid inlet, the first water bath circulation outlet and the first water supply pipe hole, the first water bath circulation fluid inlet and the first water bath circulation outlet are connected with the first serpentine seal groove 13-1 is connected, the outlet pipe of the first water storage test tube 6 passes through the first water replenishment pipe hole and is arranged at the permeable stone 16 located above, and the first water bath circulation fluid inlet and the first water bath circulation outlet pass thr...

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Abstract

The invention relates to a bilateral frost-heaving test device for porous materials and a testing method. In the prior art, the changes of temperature field, water field, and deformation filed have not been taken into account during the freezing and thawing process of porous materials, thus the frost-heaving resistant performance of porous materials cannot be precisely evaluated, and in order to solve the problem mentioned above, the invention provides the bilateral frost-heaving test device. The test device comprises a pressure machine, a constant-temperature constant-moisture curing box, a reaction frame top tray, a reaction frame support, a first water storage tube, a second water storage tube, a cylinder, a pedestal, a frost-heaving test-piece assembly, a pressure head, a test tube rack, a LVDT displacement sensor, a pressure sensor, a data collector, and two cold-bath circulators. The LVDT displacement sensor is installed on the body of the cylinder and is close to a piston rod. The reaction frame top tray is fixedly arranged on the top end of the reaction frame support. The pedestal is fixedly arranged on the bottom end of the reaction frame support. The frost-heaving test-piece assembly is fixedly arranged on the pedestal. The provided bilateral frost-heaving test device is used to carry out porous material frost-heaving tests.

Description

technical field [0001] The invention relates to a porous material test device, in particular to a bilateral frost heave test device and a test method for porous materials. Background technique [0002] Seasonal freezing in cold regions will cause a series of engineering problems such as frost heave, thawing, and freeze-thaw damage. In order to observe the changes in temperature field, moisture field and deformation field of porous materials during freezing and The ability of porous materials to resist the combined effects of frost heaving, thawing and freeze-thaw cycles, but there is no device that can solve such problems in the prior art. Contents of the invention [0003] In order to solve the problem in the prior art that the temperature field, moisture field and deformation field of the porous material change during the freezing and melting process, and to evaluate the test device for the ability of the porous material to resist frost heaving, the present invention fur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00
Inventor 马宏岩张锋冯德成林波王东升易军艳周长俊
Owner HARBIN INST OF TECH
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