High water content soil and bentonite material penetration test cylinder, device and test method

Abstract

The invention discloses a high-water-content soil and bentonite material penetration test cylinder body. The cylinder body comprises a body and an outer communicating pipe with a valve. Openings are formed in both the top end of the body and the bottom end of the body, a circumferential groove and an axial groove which are communicated with each other are formed in an inner wall face of the body, the outer communicating pipe is fixedly connected on an outer wall face of the body, and the outer communicating pipe is communicated with the circumferential groove or the axial groove. The cylinder body can effectively eliminate disturbance to a tested sample during a testing process, and particularly a sample packaging process. The invention further discloses a device which comprises the high-water-content soil and bentonite material penetration test cylinder body. The device comprises the cylinder body, a latex film, a pressure chamber, and a tested sample cap, upper porous stone, upper filtering paper, the tested sample, lower porous stone and a base seat which are arranged inside the cylinder body from top to bottom sequentially. The device can improve the reliability and precision of a testing result. The invention further provides a testing method of the device, and therefore the disturbance to the tested sample can be reduced during the sample packaging process and testing precision is improved.

Description

Technical field [0001] The invention belongs to the field of testing mechanical properties of soil in environmental geotechnical engineering, and specifically relates to a high-water content soil and bentonite material penetration test cylinder, device and testing method. Background technique [0002] With the continuous acceleration of the urbanization process in my country, the pollution degree of urban industrial sites is also increasing, and the environmental pollution caused by industrial production has attracted more and more attention. In terms of preventing the expansion of underground pollution, the soil and bentonite vertical separation wall is a structure widely used to block groundwater and the horizontal migration of pollutants. The wall material of the separation wall is a mixture of bentonite slurry, in-situ clay and dry bentonite powder, which has the characteristics of high water content and low strength. The function of the separation wall is to block the movem...

AI Technical Summary

Problems solved by technology

For soil similar to the material of the isolation wall, the water content is generally high and the strength is low. During the test, even if the sample can stand on its own, there is no sufficient support protection during installation, consolidation, saturation and infiltration. , the sample will also be greatly disturbed, unable to maintain the original upright state, and oblique deformation occurs

This will greatly affect the accuracy of the test results

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