Temperature-controlled unsaturated high-pressure consolidation instrument

Abstract

The invention discloses a temperature-controlled unsaturation high-pressure consolidometer, comprising a pressure chamber, a high-pressure loading device, a suction control device, a temperature control device, a digitization measuring device and a data acquisition device, wherein the pressure chamber is disposed in the high-pressure loading device; the high-pressure loading device is used for applying pressure to the pressure chamber; the temperature control device is covered outside the pressure chamber for controlling the temperature of the pressure chamber; the pressure chamber is also connected to the suction control device for controlling the suction of the pressure chamber; the digitization measuring device monitors the pressure, temperature and displacement of a sample, and transmits the data to the data acquisition device connected to the digitization measuring device for processing. In the invention, the high-pressure loading device, the suction control device and the temperature control device are combined to realize the experimental study of soil body change characteristics under a full suction range, and high temperature and high pressure conditions on the basis of the traditional unsaturation consolidometer. In addition, the digital measuring device and the data acquisition device are combined to realize the automatic acquisition of experimental data.

Description

technical field [0001] The invention relates to a novel geotechnical test equipment in the field of geotechnical engineering test research, in particular to a temperature-controlled high-pressure unsaturated consolidation instrument. Background technique [0002] The unsaturated consolidation instrument is mainly used to study the volume change characteristics of unsaturated soil. The existing unsaturated consolidation instrument can only measure the consolidation characteristics of soil samples at room temperature and low-suction soil materials, and the vertical pressure that can be applied during the test process is relatively small, while for higher temperature, However, there is nothing that can be done for materials that are consolidated under conditions of greater suction and higher pressure. For example, the current research hotspot, high-compacted bentonite, the buffer / backfill material used in the deep geological repository of high-level radioactive waste, needs to...

AI Technical Summary

Problems solved by technology

The existing unsaturated consolidation instrument can only measure the consolidation characteristics of soil samples at room temperature and low-suction soil materials, and the vertical pressure that can be applied during the test process is relatively small, while for higher temperature, It is powerless for materials subjected to consolidation tests under greater suction and higher pressure

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