A time-controlled thermal insulation type remodeling sample preparation device and method

Abstract

The invention discloses a time control type heat preservation remodeling sample preparation device. A soil sample preparation box is connected with a constant-temperature water tank, and thus the purpose of maintaining a constant temperature of the soil sample preparation box in the sample preparation process is achieved; the soil sample preparation box is connected with a vacuum pump, and thus the purpose of controlling the vacuum degree in the soil sample preparation box in real time is achieved; the lower portion of the soil sample preparation box is conical, and thus the purpose of collecting water to the cone vertex under the action of gravity for drainage is achieved; perforated corrugated pipes are adopted in the soil sample preparation box for drainage, and thus the three effects of adapting to consolidation deformation, increasing drainage paths and shortening sample preparation time are achieved. A time control type heat preservation remodeling sample preparation method includes the main steps of preparing slurry, adding water to the heat preservation water tank, assembling the soil sample preparation box, pouring the slurry into the soil sample preparation box, tying an open plastic bag and a plastic film, carrying out heat preservation on the soil sample preparation box, and carrying out vacuumizing. The time control type heat preservation remodeling sample preparation device and method effectively overcome the defects of long sample preparation time and non-uniform sample preparation of a vacuum consolidation method; meanwhile, multiple samples can be prepared at a time, and thus the sample preparation efficiency is improved.

Description

technical field [0001] The invention relates to the field of geotechnical engineering sample preparation, in particular to a time-controlled thermal insulation type remodeling sample preparation device and method. Background technique [0002] In the field of geotechnical engineering technology, in order to obtain the physical and mechanical indicators of soil, it is often necessary to do indoor tests on soil samples. At present, there are two types of samples used in geotechnical engineering laboratory tests: original samples and remodeled samples. The undisturbed sample can get the technical index consistent with the field, which is the most ideal choice for indoor test. However, due to the complex sampling of original samples, inconvenient storage, and high cost, reshaped samples are often used in actual tests. There are two commonly used methods for preparing remolded specimens: compaction and consolidation. The compaction method is to divide the sample into small par...

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