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Traditional rammed wall dehydration rate testing method

A rate measurement and volumetric moisture content technology, applied in measuring devices, instruments, material analysis by electromagnetic means, etc., can solve the problems of large wall disturbance and difficult sampling, and achieve the effect of simple operation and easy installation

Pending Publication Date: 2018-03-02
DUNHUANG ACAD
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Problems solved by technology

[0004] In order to scientifically understand the law of water absorption and water loss in the body of the site, and to overcome the existing defects in wall sampling and measurement of water content, the wall is greatly disturbed, sampling is difficult, and it cannot meet the needs of constantly testing the law of water content changes in different positions of the wall. The purpose of the invention is to provide a method for testing the water loss rate of traditional rammed walls

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Embodiment Construction

[0026] In the process of testing the water loss rate of the rammed wall in the traditional ramming process, the present invention selects the 5TM dielectric soil moisture sensor and the EM50 collector to collect the moisture content of the soil body, which can accurately reflect the water content of the rammed earth body.

[0027] Below in conjunction with accompanying drawing, technical scheme of the present invention is described further:

[0028] A method for testing the water loss rate of a wall body rammed by a traditional ramming process, the steps comprising:

[0029] (1) Calibration. To calibrate the 5TM dielectric soil moisture sensor 1 (hereinafter referred to as the sensor), the soil sample 2 used for calibration must be consistent with the soil of the rammed site, and the density and moisture content of the soil sample should be consistent with the control on the construction site. Through traditional sampling and analysis of the measured mass water content, corre...

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Abstract

The invention relates to a traditional rammed wall dehydration rate testing method. According to the invention, a dielectric soil moisture sensor is embedded in a soil sample of a rammed soil body, based on complete contact of the dielectric soil moisture sensor and the soil sample of the rammed soil body, change of the dielectric constant is continuously measured, by comparing with the dielectricconstant through interior calibration, or through sampling, the water mass fraction is tested, the tested water mass fraction is corrected, and the practical water content of the rammed soil body isobtained. The method has the advantages that the method is simple and practical, a change rule of the water content in the soil body can be continuously monitored, and the method performs active effects for dry-shrinkage due to dehydration, rising of capillary water, rainfall infiltration, water and salt transport research as well as protection and reinforcement engineering of the remains of earthen buildings.

Description

technical field [0001] The invention relates to the field of soil site protection test research and protection reinforcement, and belongs to an important method of soil site protection research, especially in the arid and semi-arid areas of Northwest China. The research on the damage mechanism of the site itself and the migration of water and salt has innovative significance. Background technique [0002] In Xinjiang, Gansu, Ningxia and Shaanxi in Northwest my country, there are many ancient earthen building sites, the Great Wall in the north, the border city and beacon towers on the vast Gobi in the northwest, and the Jiaohe, Gaochang, Loulan and Niya ruins in Xinjiang. Thousands of years, thousands of miles across, all over China. These earthen building sites have a long history, and some have been listed as world cultural heritage, with high cultural relic protection value. Affected by construction techniques and materials, the body of the earth building site is extremel...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/22
CPCG01N27/221
Inventor 裴强强郭青林张博杨善龙尚东娟刘晓颖朱毓赵国靖
Owner DUNHUANG ACAD
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