Consolidation compressor for testing dry-wet cycle characteristics of expansive soil

Abstract

The invention provides a consolidation compressor for testing dry-wet cycle characteristics of expansive soil. The consolidation compressor comprises a test bed, an air blower, a water tank, hydraulicloading equipment, a displacement meter and a camera; the bottom of the water tank is provided with an orifice which can be sealed by a hole cover to prevent the bottom of the water tank from leakingwater; the orifice is positioned in the center of the bottom of the water tank, and a beam strip is arranged at the orifice to play a supporting role; when the compression characteristic of a cuttingring sample in the wet-to-dry process is measured, the air blower is arranged at the orifice and used for drying and blowing air to a lower-layer permeable stone, and the lower-layer permeable stonewhich is gradually dried is used for gradually absorbing water in the cutting ring sample, so that the wet-to-dry process of expansive soil can be simulated. Instrument disturbance caused by manual moving and drying of the cutting ring sample is avoided, so that experimental data are more accurate and reasonable; and wind blown out by the air blower upwards passes through the permeable stone, so that the effect of gradually drying the cutting ring sample is achieved.

Description

technical field [0001] The invention relates to the field of geological soil detection, in particular to a consolidation compressometer for testing the dry-wet cycle characteristics of expansive soil. Background technique [0002] Expansive soil exists widely in various parts of our country. Its engineering characteristics are poor and its properties are complex. Due to its characteristics of drying shrinkage and wet expansion, slopes or roadbeds with expansive soils are prone to damage after repeated rainfall and drying processes. Therefore, it is necessary to study The crack change characteristics and expansion and compression deformation characteristics of thoroughly expansive soil in the process of dry-wet cycle. [0003] In the indoor consolidation compression test of expansive soil, if you want to study its dry-wet cycle characteristics, in the process of changing from wet to dry, the water-soaked ring knife sample is generally placed in an oven for drying treatment. D...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects of the prior art facilities, the present invention proposes an instrument and method for testing the deformation characteristics of expansive soil in the dry-wet cycle process, which has the advantages of simple device and simple operation

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