Temperature control-type high suction unsaturated soil consolidation apparatus

A temperature-controlled, consolidation instrument technology, applied to instruments, scientific instruments, and the use of stable tension/pressure to test the strength of materials, etc., to achieve the effects of shortening the test time, convenient installation and testing, and strong practicability

Active Publication Date: 2016-03-02
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Temperature control-type high suction unsaturated soil consolidation apparatus
  • Temperature control-type high suction unsaturated soil consolidation apparatus
  • Temperature control-type high suction unsaturated soil consolidation apparatus

Examples

Experimental program
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Effect test

Embodiment 1

[0099] Put the prepared sample 00 (undisturbed sample, compacted sample, compacted sample, mud sample) into the pressure chamber 30, according to figure 2 Assemble the pressure chamber 30 according to the base 32, the bottom permeable stone 38, the O-ring 39, the sample 00, the top permeable stone 37, the sample cover 34, the sample chamber 33, the annular cover plate 31, and the piston loading rod 35 in order ; Provide suction of 0 to 1000MPa to the pressure chamber 30 through the suction control device 10, and different suction levels can be set according to needs, and the dry-wet cycle test under constant load conditions and the consolidation test under constant suction conditions are carried out.

Embodiment 2

[0101] Install the sample 00 according to Embodiment 1, control the suction force in the pressure chamber 30 through the suction control device 10, and apply a certain pressure to the sample 00 through the loading device 40. Under certain conditions, a temperature of 25-95°C is supplied to the sample 00 through the temperature control device 20, and different temperature levels can be set according to needs for dry-wet cycle tests and consolidation tests under temperature control conditions.

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Abstract

The invention discloses a temperature control-type high suction unsaturated soil consolidation apparatus, and belongs to the soil test technology in the field of geotechnical engineering. A specimen to be measured (00) is included, and the apparatus is provided with a suction control device (10), a temperature control device (20), a pressure chamber (30) and a loading device (40). The specimen (00) is arranged in the pressure chamber (30); the pressure chamber (30) is placed in the temperature control device (20); the suction control device (10) is connected to the pressure chamber (30) through a pipe, and controls the suction of the pressure chamber (30); and the loading device (40) is connected to the pressure chamber (30), and provides pressure to the specimen (00). The invention adopts a relative humidity control technology to realize suction control in a high suction range; the high pressure loading device is used for the realization of the high pressure loading; and the temperature control device is employed to realize the temperature control. The apparatus has the advantages of simple principle of suction control, easiness to operate, convenience for installation and measurement and strong practicability, and is applicable to unsaturated soil test under the conditions of high pressure and controlled temperature and controlled humidity.

Description

technical field [0001] The invention relates to geotechnical test technology in the field of geotechnical engineering, in particular to a temperature-controlled high-suction unsaturated soil consolidation instrument. [0002] Specifically, according to specific engineering conditions, test the compressibility of unsaturated soil in the high suction section in different temperature environments, and study the deformation characteristics of unsaturated soil in the high suction section under different temperature conditions. Background technique [0003] Unsaturated soil is widely distributed, and will deform during the dry-wet cycle and loading process, which will affect various engineering structures such as slopes and roadbeds. Especially for unsaturated expansive soil, the suction is higher in the unsaturated state, which will have a significant impact on soil deformation. In addition, in recent years, high-compacted bentonite as a buffer material has been affected by high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/02
Inventor 颜荣涛梁维云陈永健杨德欢韦昌富
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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