Slurry consolidating sample production apparatus and use method thereof

Abstract

The invention discloses a slurry consolidating apparatus and a use method thereof. The slurry consolidating apparatus comprises a power supply system, a sample production platform system and a die system. The method comprises the following steps: mixing fine grained soil with air-free water, pouring the obtained mixture into a container, sealing, storing, and stirring after water is fully absorbed; completing assembling of the die system; fixing the die system to a sample disposing base plate of the sample production platform; pouring a slurry into a sample die through a funnel; adjusting the height of a reaction force crossbeam to make a presser contact with the upper surface of the slurry; starting an inflator, and carrying out grading loading; allowing the sample to be in a sealed state; and applying an axial consolidating pressure, and respectively adding negative pressures with equal size to a top cover and a die pedestal to accelerate consolidation until consolidation is completed. The apparatus and the method effectively reduce the disturbance possibility of the sample, improve the repeatability of the sample, make the sample have uniform water content and particle size distribution, and effectively improve the sample production efficiency and the quality of the sample.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering tests, in particular to a solid cylindrical fine-grained soil mud consolidation sample preparation equipment and its use method Background technique [0002] The indoor static and dynamic triaxial instrument can independently control the dynamic confining pressure and dynamic axial force, and can simulate most stress paths encountered in engineering. It is a necessary equipment for studying the mechanical properties of soil under various stress conditions. In the study of the static and dynamic mechanical properties of fine-grained soil, a very important link is the preparation of samples for laboratory tests. [0003] The method of sample preparation has a decisive influence on the test results. Initially, the undisturbed samples were used for indoor tests on natural sedimentary soils. However, for fine-grained soils, it is difficult to obtain undisturbed samples because the...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the above difficulties and problems, to provide a new slurry consolidation sample preparation equipment and use method, the prepared sample has a uniform water content and particle size distribution, the reproducibility of the prepared samples is high, so that the remolded samples of fine-grained soil have similar mechanical properties and soil structure

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