Soil sample unconfined compression test device with controllable suction

Abstract

The invention discloses an unconfined compression test device for soil samples with controllable suction, which includes a base and a support. The base and the support are respectively provided with a pressurizing mechanism, a pressurizing head and a pressure bearing platform, and the sample is arranged on the pressurizing head. Between the pressurized plug and the pressure table, a displacement gauge is equipped to measure the pressing distance, the sample is enclosed in a transparent sealed container, the pressurizing mechanism pushes the pressurized plug through the sealed container, and the sealed The container is hermetically sealed, and the solution is stored in the sealed container. The suction-controllable soil sample unconfined compression test device wraps the sample in a sealed container, and does not affect the pressurization mechanism to push the sample to the top. Salt solutions with different relative humidity can be added to the container, and the soil The sample is directly placed in a closed environment with a specific relative humidity. When the vapor pressure of the solution and the suction of the soil sample reach equilibrium, the unconfined compression test can be carried out to obtain the unconfined compression resistance of the soil sample under different suction. strength properties.

Description

technical field [0001] The invention relates to a soil sample unconfined compression test device with controllable suction. Background technique [0002] The traditional soil sample unconfined compression test device includes a base and a support. The base and the support are respectively provided with a pressurization mechanism, a pressurization plug and a pressure platform. The sample is arranged between the pressurization plug and the pressure platform. The pressurized head is equipped with a displacement gauge to measure the pressing distance. However, in the traditional soil sample unconfined compression test device, the sample is exposed to dry air, and it is easy to lose water, which causes a large change in the suction of the soil sample, and the obtained test data cannot truly reflect the soil sample. state. Contents of the invention [0003] In view of the deficiencies in the background technology, the technical problem to be solved by the present invention is ...

AI Technical Summary

Problems solved by technology

However, in the traditional soil sample unconfined compression test device, the sample is exposed to dry air, and it is easy to lose water, which makes the suction in the soil sample change greatly, and the obtained test data cannot truly reflect the soil sample. state

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