Apparatus and method for miniature soil-water characteristic curve test suitable for industrial ct scanning

Abstract

The invention discloses a miniature soil-water characteristic curve test device and method suitable for industrial CT scanning, which includes a base, a vertically arranged shell is fixed on the top of the base, the top of the shell is open and is provided with a storage cavity for accommodating test samples Groove, the bottom of the accommodating groove is provided with a water storage chamber, the bottom of the water storage chamber is connected with the height-adjustable burette through the water inlet pipe, and the bottom of the water storage chamber is also connected with the water outlet pipe; the upper part of the shell is provided with a loading plug corresponding to the test sample. The top of the loading plug is connected with the stress loading device; the shell and the loading plug are made of transparent materials. The test device can be placed in an industrial CT scanning room for testing, and CT scanning can be performed immediately during the testing process to obtain soil-water characteristic curves of unsaturated soil under different stress conditions.

Description

technical field [0001] The disclosure belongs to the technical field of unsaturated soil mechanics research, and in particular relates to a miniature soil-water characteristic curve test device and method suitable for industrial CT scanning. Background technique [0002] In the last decade, the application of micro-CT scanning to the study of the mechanical and hydraulic properties of unsaturated soils has attracted much attention. In order to obtain higher resolution when using industrial CT scanning technology. It can be seen from its technical characteristics that on the one hand, the focus size of the ray beam should be reduced, but it will limit the penetration ability of the ray; on the other hand, the size of the soil sample should be controlled to ensure that the soil sample can rotate stably during scanning, but the scanning object will be limited. Dimensions. Such limitations have largely affected the study of the microscopic properties of unsaturated granular ma...

AI Technical Summary

Problems solved by technology

This method will unload the pressure during the process of transferring the soil sample, which will inevitably cause structural disturbance to the soil sample, which will affect the test results, and the test accuracy is low

Whereas for better resolution, unsaturated granular soils or other granular materials such as sand are usually studied (clays have a much smaller particle size, resulting in a more complex microstructure and poorer image resolution), This will result in less accurate images from CT scans

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