Loading test device and system for testing chloride ion permeation law in concrete test piece

A technology for loading test devices and concrete specimens, which is used in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc. And other issues

Pending Publication Date: 2020-12-18
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of the prior art that the concrete loading test device has complex structure, many parts, cumbersome operation and not suitable for chloride io

Method used

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  • Loading test device and system for testing chloride ion permeation law in concrete test piece
  • Loading test device and system for testing chloride ion permeation law in concrete test piece
  • Loading test device and system for testing chloride ion permeation law in concrete test piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A loading test device for testing the law of chloride ion penetration in concrete specimens, used to apply compressive stress to concrete specimens 5, such as figure 1 and figure 2 As shown, it includes an outer retaining ring 1, an inner pressure ring 2, a tapered pressure sleeve 3, a wedge-shaped pressing block 4 and a pressing device.

[0038] Wherein, the outer retaining ring 1 is a rigid component, such as aluminum or steel, which wraps around the concrete specimen 5 so that the concrete specimen 5 is confined within the area surrounded by the outer retaining ring 1 .

[0039] The inner pressure ring 3 is placed inside the outer retaining ring 1, and the two are usually coaxially arranged and located in the same plane, while the above-mentioned concrete specimen 5 is placed between the inner pressure ring 3 and the outer retaining ring 1, and passed through the following The components are fastened therein. In this embodiment, the configured inner pressure ring ...

Embodiment 2

[0048] The difference from Embodiment 1 is that in this embodiment, the taper angle of the conical gland 3 is 10°, which is relatively large, which makes the conical gland 3 only need a small stroke to work. Applying a predetermined pressure to the concrete test piece 5 further reduces operational requirements.

Embodiment 3

[0050] The difference from Embodiment 1 is that in this embodiment, the conical angle of the conical gland 3 is 7°, which is between the conical angles of the conical gland 3 in Embodiment 1 and Embodiment 2. Therefore, when operating under the cone angle, the lock nut 8 can not only have an observable movement stroke, but also provide the predetermined pressure required by the concrete test piece 5 .

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Abstract

The invention discloses a loading test device and a loading test system for testing a chloride ion permeation law in a concrete test piece, and belongs to the field of concrete tests, the loading testdevice comprises an outer check ring, an inner pressing ring, a conical pressing sleeve, a plurality of wedge-shaped pressing blocks and a pressing device;the inner pressing ring has elasticity, a concrete test piece is fastened between the inner pressing ring and the outer check ring to restrain the permeation direction of a chloride ion solution, the conical pressing sleeve coaxially penetratesthrough the inner pressing ring, an axial through hole is formed in the conical pressing sleeve, and the multiple wedge-shaped pressing blocks are evenly distributed between the inner pressing ring and the conical pressing sleeve in the circumferential direction. A pressure-bearing taper hole defined by the wedge-shaped side walls of the multiple wedge-shaped pressing blocks is matched with the conical pressing sleeve, and the pressing device is used for pressing the conical pressing sleeve into the pressure-bearing taper hole so as to apply a radial load; the loading test system further comprises a strain gauge and a signal test analysis system. The device is simple in structure, the concrete test piece can be pressurized through simple operation, and the test of the chloride ion permeation law in the concrete test piece is facilitated.

Description

technical field [0001] The invention relates to the field of concrete tests, in particular to a loading test device and a system for testing the penetration law of chloride ions in concrete test pieces. Background technique [0002] The loading of concrete is the basis of its research and evaluation. In the prior art, in order to ensure the loading effect and accuracy, the concrete loading device usually uses jacks, hydraulic pipes, hydraulic pumps, hydraulic cylinders and other devices to apply tensile-compressive stress to the concrete specimen. [0003] However, the above concrete loading devices have the disadvantages of complex structure, many parts, and insufficient operation steps, and these concrete loading devices cannot restrict the direction of chloride ion penetration in the concrete specimen. Contents of the invention [0004] Aiming at the problems of the prior art that the concrete loading test device has complex structure, many parts, cumbersome operation ...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/08G01N15/0806
Inventor 祝文君于中旭许玉德周宇杨新文
Owner TONGJI UNIV
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