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Device for testing salt expansion characteristic of salinized soil

A characteristic test and saline soil technology, applied in the direction of measuring devices, material inspection products, thermometers, etc., can solve the problems of reduced work efficiency, large volume of test devices, and inability to measure the temperature of soil samples, etc., to achieve simple measurement Convenience, improve work efficiency, reasonable design effect

Pending Publication Date: 2017-08-18
QINGHAI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, there are following deficiencies in the salt expansion test device in the prior art: (1) the test device volume is too large; (2) the temperature of the soil sample specimen cannot be directly measured, which reduces work efficiency; The temperature of the soil sample is measured continuously in the process, and the measurement stability and validity are low

Method used

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  • Device for testing salt expansion characteristic of salinized soil
  • Device for testing salt expansion characteristic of salinized soil
  • Device for testing salt expansion characteristic of salinized soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] refer to Figure 1 to Figure 5 , a test device for salt expansion characteristics of saline soil, comprising a water tank 1, an upper retaining ring 2, a lower retaining ring 3, a ring knife 4, a fixed ring 5, an upper permeable stone 6, a soil sample 7, a lower permeable stone 8, and a Press upper cover 9, guide groove 10, upper cover line hole 11, upper permeable stone line hole 12, lower permeable stone line hole 13, dial indicator 14, dial indicator guide rod 15, dial indicator support 16, dial indicator Crossbeam 17, adjustment nut 18, temperature sensor 19 on soil sample, temperature sensor 20 below soil sample.

[0033] It is characterized in that a lower permeable stone 8 is placed on the bottom of the water tank 1, a soil sample 7 is placed on the lower permeable stone 8, filter paper is placed on the soil sample 7, an upper permeable stone 6 is placed on the soil sample 7, and the upper permeable A pressurized loam cake 9 is arranged above the stone 6, and on...

Embodiment 2

[0043] refer to Figure 1 to Figure 5 , a test device for salt expansion characteristics of saline soil, comprising a water tank 1, an upper retaining ring 2, a lower retaining ring 3, a ring knife 4, a fixed ring 5, an upper permeable stone 6, a soil sample 7, a lower permeable stone 8, and a Press upper cover 9, guide groove 10, upper cover line hole 11, upper permeable stone line hole 12, lower permeable stone line hole 13, dial indicator 14, dial indicator guide rod 15, dial indicator support 16, dial indicator Crossbeam 17, adjustment nut 18, temperature sensor 19 on soil sample, temperature sensor 20 below soil sample.

[0044] It is characterized in that a lower permeable stone 8 is placed on the bottom of the water tank 1, a soil sample 7 is placed on the lower permeable stone 8, filter paper is placed on the soil sample 7, an upper permeable stone 6 is placed on the soil sample 7, and the upper permeable A pressurized loam cake 9 is arranged above the stone 6, and on...

Embodiment 3

[0054] refer to Figure 1 to Figure 5 , a test device for salt expansion characteristics of saline soil, comprising a water tank 1, an upper retaining ring 2, a lower retaining ring 3, a ring knife 4, a fixed ring 5, an upper permeable stone 6, a soil sample 7, a lower permeable stone 8, and a Press upper cover 9, guide groove 10, upper cover line hole 11, upper permeable stone line hole 12, lower permeable stone line hole 13, dial indicator 14, dial indicator guide rod 15, dial indicator support 16, dial indicator Beam 17, adjusting nut 18, soil sample upper temperature sensor 19, soil sample lower temperature sensor 20;

[0055] It is characterized in that a lower permeable stone 8 is placed on the bottom of the water tank 1, a soil sample 7 is placed on the lower permeable stone 8, filter paper is placed on the soil sample 7, an upper permeable stone 6 is placed on the soil sample 7, and the upper permeable A pressurized upper cover 9 is arranged above the stone 6, and one...

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Abstract

The invention relates to a device for testing the salt expansion characteristic of salinized soil, belonging to the technical field of highway construction; the device is applied to the study for the salt expansion characteristic of the salinized soil. The device comprises a water tank, retaining rings, a ring knife, a fixed ring, water permeable stones, a soil sample, a pressurizing upper cover, a guide slot, an upper cover thread hole, water permeable stone thread holes, a dial indicator and soil sample temperature sensors, wherein the lower water permeable stone is arranged at the bottom of the water tank, the soil sample is arranged on the lower water permeable stone, the upper water permeable stone is arranged on the soil sample, and the pressurizing upper cover is arranged on the upper water permeable stone; the ring knife is arranged at the outer side of the soil sample, and the retaining rings are respectively arranged at the outer sides of the water permeable stones; a lead of the upper soil sample temperature sensor passes through the upper cover thread hole and the upper water permeable stone thread hole and is led into the upper surface of the soil sample, and a lead of the lower soil sample temperature sensor passes through the lower water permeable stone thread hole and is led into the lower bottom surface of the soil sample; the upper soil sample temperature sensor and the lower soil sample temperature sensor are respectively used for measuring the temperatures of the upper part and the lower part of the soil sample. The device for testing the salt expansion characteristic of the salinized soil is reasonable in design and convenient and simple to operate, can directly measure the temperature of the soil sample and realize continuous temperature measurement, and is good in measurement stability and effectiveness and high in working efficiency, thus being convenient to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of road construction, and in particular relates to a test device for salt expansion characteristics of saline soil. Background technique [0002] Saline soils are widely distributed in my country, and most of them are concentrated in the northwest inland basins. The engineering projects involved in saline soil areas have brought many difficulties to engineering construction due to the unique engineering characteristics of saline soils. Salt swelling of saline soil often causes uneven deformation of engineering pavement or foundation, resulting in pavement cracking or roadbed deformation, so the research on the salt swelling performance of saline soil is a problem that cannot be ignored. [0003] According to the research, there are different test schemes and methods for the salt swelling characteristics of saline soil. The existing test methods on the salt expansion characteristics of saline soil under vari...

Claims

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Application Information

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IPC IPC(8): G01N33/42G01K13/00G01B5/30
CPCG01B5/30G01K13/00G01N33/42
Inventor 张文李国荣罗艳珍任秀玲刘昕
Owner QINGHAI UNIVERSITY
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