Sample preparation device for geotechnical test

Abstract

The invention discloses a sample preparation device for a geotechnical test. The sample preparation device comprises a sample preparation cylinder, a compaction rod is arranged in the sample preparation cylinder, the compaction rod is inverted T-shaped and comprises a horizontal compaction disc and a vertical rod, a test soil sample is held in the sample preparation cylinder, a connection strap isfixedly connected to a top end of the vertical rod, the connection strap is horizontally arranged, one end of the connection strap is fixedly connected with the vertical rod, the other end of the connection strap is fixedly connected with a compaction degree measurement rod, the compaction degree measurement rod is parallel to the vertical rod of the compaction rod, an observation arrow is arranged at a lower end of the compaction degree measurement rod, scale lines are vertically arranged on an outer side wall of the sample preparation cylinder, when the compaction rod is arranged in the sample preparation cylinder, the compaction disc is in contact with the surface of the test soil sample, and the height indicated by the observation arrow is the same as the height where the compaction disc is located. By adopting the sample preparation device disclosed by the invention, in a process when an experimenter compacts the soil sample, the experimenter can conveniently control the compaction degree and the smoothness of each layer of soil sample so as to make adjustment in time.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering test devices, and in particular relates to a sample preparation device for geotechnical tests. Background technique [0002] When studying the mechanical properties of soil by means of experiments, cylindrical reshaped specimens, especially those requiring control of compactness, are often used in various tests, such as: unconfined compression test, static triaxial test, Dynamic triaxial test. In the process of test sample preparation, the layered sample preparation method is generally adopted to ensure the uniformity of the sample density is crucial to the accuracy of the test results. However, in the actual sample preparation process, due to the opacity of the material of the sample preparation film, each The compactness of the layer soil sample and the flatness of the soil sample surface cannot be accurately monitored and controlled, which reduces the quality of the sample. ...

AI Technical Summary

Problems solved by technology

In the process of test sample preparation, the layered sample preparation method is generally adopted to ensure the uniformity of the sample density is crucial to the accuracy of the test results. However, in the actual sample preparation process, due to the opacity of the material of the sample preparation film, each The compactness of the layer soil sample and the flatness of the soil sample surface cannot be accurately monitored and controlled, which reduces the quality of the sample

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