Manufacturing process of soft clay microsection

A production process and soft clay technology, applied in the field of micro-sheet production technology, can solve the problems of small pore size, high void ratio, easy breakage, etc., and achieve the effect of high compressibility and small pore size

Inactive Publication Date: 2013-12-11
TIANJIN URBAN CONSTR COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the existing rock-soil thin section production process that soft clay cannot be effectively impregnated and cemented and that it is easily damaged in later grinding, and to provide a production process for soft clay microscopic slices. Not only can it effectively solve the problem that soft clay cannot be impregnated and cemented due to low permeability, small pore size, and high void ratio, but it can also ensure that the grinding process will not damage the soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] A manufacturing process of soft clay microscopic slices, carried out according to the following steps:

[0014] 1. The soft soil sample was dehydrated by vacuum freeze-drying method. Cut the soft soil into blocky soil samples with length×width×height of 30mm×30mm×30mm~50mm×50mm×50mm using a paper knife or a fine wire saw frozen in liquid nitrogen, in order to prevent the soft clay from grinding in the later stage Damaged and deformed during the process. The process of cutting soil ensures that the blade remains in a low-temperature frozen state, reducing interference to the soil sample profile. Then put the cut soil samples in a low-temperature refrigerator at -40°C for 24 hours and freeze them for 24 hours. After this treatment, the pore water in the soil becomes non-expandable non-crystalline ice. Then put the soil sample into a freeze dryer and vacuumize it at -50°C, generally for 24 to 48 hours. The purpose is to directly sublimate the non-crystalline ice in the s...

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PUM

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Abstract

The invention provides a manufacturing process of a soft clay microsection. The manufacturing process is implemented through the following steps: 1, carrying out dehydration treatment on a soft clay sample by utilizing a vacuum freeze-drying method; 2, soaking and cementing the soft clay sample subjected to dehydration treatment: sequentially carrying out a gluing-drying-rough grinding-drying-gluing process multiple times so that the thickness of the soft clay sample subjected to soaking and cementing is less than 1cm; 3, carrying out fine grinding on the sample subjected to rough grinding until the thickness of the grounded sample is 0.034mm; and 4, directly preparing the sample with the thickness of 0.034mm obtained in the step 3 into the soft clay microsection by utilizing a cover plate or terebenthene. The manufacturing process provided by the invention has the beneficial effects of carrying out effective soaking and cementing on soft clay which is low in intensity, high in water content, high in compressibility, small in pore diameter and high in void ratio, maintaining the original microstructure of the soft clay, and solving the problem that a polarization microscope can not be used for observation due to the limitation of a sampling technology by grinding the soft clay into the microsection with the thickness of 0.034mm.

Description

Technical field: [0001] The invention relates to a process for making a microscopic slice that can be observed by a polarizing microscope or used for image processing software to extract data, in particular to a process for making a microscopic slice of soft clay. Background technique: [0002] Because rocks are hard and loess is loose, porous, easy to glue and easy to grind, they are widely used in the field of microscopic thin section production. The production process includes sample preparation, impregnation and cementation, grinding and forming. Slice several processes. However, soft clay is a soft soil with low strength, high water content, high compressibility, low permeability, small pore size, and high void ratio. It is not easy to seep glue and the soil is easily damaged. It is difficult to grind it into an ideal thin slice of 0.034mm. , it is impossible to effectively observe the microstructure characteristics of soft clay. Therefore, the traditional geotechnical...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01N1/28
Inventor赵建军张彦杜东菊杨爱武郭进京
OwnerTIANJIN URBAN CONSTR COLLEGE