Sample preparing and demoulding integrated instrument

Abstract

The invention discloses a sample preparing and demoulding integrated instrument. The integrated instrument at least comprises a driving mechanism, a transmission mechanism, a base and a material loading die which is arranged on the base, wherein an upper pressure plate is arranged above the material loading die; a lower pressure plate is arranged below the material loading die; and both the upperpressure plate and the lower pressure plate are connected with the transmission mechanism. The integrated instrument has the advantages of capability of preparing a plurality of test pieces at the same time, and realizing a mode of bidirectional vertical pressurization, simple operation and using, certain automation degree, convenient maintaining, capability of preparing geotechnical samples withhigher density and uniform water content, and high efficiency of sample preparation.

Description

technical field [0001] The invention relates to a combined sample preparation and demoulding instrument, which is a remolded soil sample preparation instrument. Background technique [0002] Since K. Terzaghi put forward the effective stress principle in 1923, modern soil mechanics has made great progress. In 1963, Roscoe proposed the famous Cambridge model for clay, which pushed the research of soil mechanics to a new climax and opened the door of modern soil mechanics research. The emergence and development of soil mechanics are actually based on experiments, especially the early laboratory experiments laid a solid foundation for the subsequent theoretical research on soil mechanics. The indoor test must first solve the sample preparation problem: uniform density, moisture content, flat test piece. The layered compaction method and the one-way static pressure method, because the stress state of the soil sample is not uniform, fundamentally speaking, it is impossible to m...

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Problems solved by technology

The layered compaction method and the one-way static pressure method, because the stress state of the soil sample is not uniform, fundamentally speaking, it is impossible to make a uniform soil sample

[0003] The deficiencies in the existing methods are summarized as follows: (1) density and water content are uneven and uneven; (2) compaction noise pollution is serious, and vibration affects other people's normal work; (3) automatic demoulding is impossible; (4) It takes a long time and the efficiency is low; (5) manual operation cannot guarantee the accuracy, resulting in great differences in test results; (6) the consistency of physical and mechanical indicators of parallel test pieces cannot be guaranteed; (7) the degree of automation is very low , relying entirely on manual work; (8) One set of machines for one type of sample preparation, resulting in extreme waste; (9) After sample preparation, there is a lot of human disturbance before the physical and mechanical index test; (10) The test results are poor in comparability and repeatability

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