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Comprehensive testing device for crystallization pressure, frost heaving and salt heaving of saline soil

A comprehensive testing, saline soil technology, applied in the direction of measuring device, material crystallization, measuring fluid pressure, etc., can solve the problem of lack of instruments and equipment in crystallization pressure testing

Pending Publication Date: 2019-11-15
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current experimental devices used for saline soil testing can usually only study a single factor in saline soil, such as studying the migration of water and salt in saline soil, or testing the salt expansion rate of saline soil under changing temperature and humidity conditions
However, there is no special equipment for crystallization pressure testing.

Method used

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  • Comprehensive testing device for crystallization pressure, frost heaving and salt heaving of saline soil
  • Comprehensive testing device for crystallization pressure, frost heaving and salt heaving of saline soil
  • Comprehensive testing device for crystallization pressure, frost heaving and salt heaving of saline soil

Examples

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Embodiment 1

[0020] Example 1. As figure 1 As shown, a comprehensive testing device for saline soil crystallization pressure and frost heaving and salt expansion is used to be placed in a humidity temperature control box 1, which includes a bottom plate 2, on which a support rod 3 is arranged, and on the support rod 3 The upper end of the upper end is fixedly provided with top plate 4, is provided with slide plate 5 on support bar 3, is provided with jack 6 between slide plate 5 and base plate 2, is provided with the through hole for support bar 3 passing usefulness on slide plate 5, slide plate 5 The lower surface of the jack is in contact with the upper movable end of the jack 6; a dynamometer 7 is provided on the slide plate 5, a sample platform 8 is provided on the dynamometer 7, and a sample cylinder 9 is provided on the sample platform 8. A soil sample 10 to be measured is housed in the sample cylinder 9; a temperature sensor 11, a PF Meter matrix potential sensor 12, a pore water pr...

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Abstract

The invention discloses a comprehensive testing device for crystallization pressure, frost heaving and salt heaving of saline soil. A jack is arranged between a sliding plate and a bottom plate, a forcemeter is arranged on the sliding plate, a sample table is arranged on the forcemeter, a test tube is arranged on the sample table, and a to-be-tested soil sample is put in the test tube; a temperature sensor, a PF Meter matric potential sensor, a pore water pressure sensor and a Hydra Probe 2 three-parameter sensor are arranged in the soil sample, and all the sensors are connected with a processor through a data acquisition system; a pressure head matched with the sample tube is arranged on a top plate, cold bath devices A and cold bath devices B for alcohol refrigeration are arranged on thepressure head and the sample table respectively; a dial indicator mounting rack is arranged on a support rod, and a dial indicator is arranged on the dial indicator mounting rack. The device can alsostudy the influence relation of environment temperature on multiple factors of the saline soil.

Description

technical field [0001] The invention relates to a comprehensive testing device for saline soil crystallization pressure and frost heaving and salt swelling, belonging to the field of saline soil experiment tools. Background technique [0002] The saline soil is widely distributed in our country, and the engineering projects involved in the saline soil area often bring inconvenience to the engineering construction due to the characteristics of saline frost heaving and salt heaving. Existing experimental devices are dedicated to the study of the influence of ambient temperature and humidity on the migration of water and salt in saline soil and frost heaving and salt heaving, but less research has been done on crystallization pressure. At present, there is no special equipment for testing the crystallization pressure of saline soil. In terms of rock expansion and expansion pressure testing, there are currently many types of rock expansion pressure instruments. The principle is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/14G01N25/16G01L11/00G01K13/00
CPCG01N25/147G01N25/16G01L11/00G01K13/00
Inventor 吴道勇谭仁义任愉黄佑芬
Owner GUIZHOU UNIV
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