Cohesive soil sample preparation device for soil test and use method

Abstract

The invention relates to a cohesive soil sample preparation device for a soil test and a use method, which are mainly used for solving the problem of soil sample preparation failure caused by adhesionof a soil sample to a mold in a cohesive soil sample remodeling preparation process in the soil test. Components required by the device mainly comprise a cohesive soil sample, a preservative film, amold with a pull ring, a mold cover, a base, a sleeve clamp and a tamping rod. The preservative film is laid on the inner side of the mold and used for isolating the mold from the cohesive soil sample, so that the test piece is smoothly demolded under the same condition, the molded cohesive soil sample is maintained, and moisture evaporation of the soil sample is reduced; the mold is mainly used for ensuring that the cohesive soil sample becomes a size required by an experiment; the mold cover is mainly used for fixing the preservative film and eliminating wrinkles inside the preservative film, and completeness and smoothness of the cohesive soil sample are guaranteed. According to the device for solving the problem of sticking of the cohesive soil to the mold in the soil test, the problemof soil sample manufacturing failure caused by sticking of a soil sample to the mold can be solved, and the overall integrity of a clay sample is improved; sample defects caused by the fact that theworkpiece is taken down from the mold in the workpiece manufacturing process can be avoided; meanwhile, the manufacturing efficiency of the three-axis soil sample is greatly improved.

Description

Technical field [0001] The invention belongs to the field of geotechnical engineering tests, and in particular relates to a cohesive soil sample preparation device for geotechnical tests and a method of use. Background technique [0002] Geotechnical testing is the foundation of the development of geotechnical engineering, and the preparation of geotechnical samples is an indispensable link for geotechnical testing. When the traditional geotechnical experiment is remolding the soil sample, the problem of soil sample preparation failure due to the soil sample sticking to the side wall of the mold often occurs, especially for cohesive soil, which greatly affects the integrity of the sample. At the same time, when the traditional geotechnical test remodels the soil samples, the relatively soft and viscous soil samples often increase the difficulty of demoulding operations, which greatly reduces the efficiency of sample production. In view of the above-mentioned problems, the presen...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the difficult problems encountered in the traditional geotechnical test remodeling soil sample making and demoulding process, that is, the failure of making the soil sample due to the sticking of the soil sample on the side wall of the mold and the relative softness of the soil sample. Viscosity increases the difficulty of demoulding operation, optimizes traditional production methods and devices, and improves the efficiency of soil sample production for geotechnical tests

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