Device for accelerating uniform water diffusion of unsaturated soil sample

Abstract

The invention discloses a device for accelerating uniform water diffusion of an unsaturated soil sample. A soil sample sealing device (2) is fixedly arranged on a vibrating platform (3); the soil sample sealing device (2) is covered by a temperature controlled heat-insulating box (4); a heating device acting on the soil sample sealing device (2) is arranged on the temperature controlled heat-insulating box (4); a cold air inlet (6) and a cold air outlet (7) are formed in the temperature controlled heat-insulating box (4); a water sample (1) is sealed by the soil sample sealing device (2) and is fixedly arranged on the vibrating platform (3); and the vibrating platform is arranged in the temperature controlled heat-insulating box (4) in a covering manner. By virtue of the microwave heating function of the heat-insulating box, the soil sample is heated to 60-70 DEG C, the vibrating platform is started and then is turned off after vibrating for a certain time, after a certain time interval, the soil sample is cooled to 0-10 DEG C by virtue of the cooling function of the heat-insulating box and then the soil sample is kept for a certain time interval. The device disclosed by the invention is used for making an unsaturated soil test piece which is uniform in moisture content in an unsaturated soil test, and the test piece making time can be greatly shorted.

Description

technical field [0001] The invention relates to a soil sample moisture diffusion device, in particular to a device for accelerating the uniform diffusion of unsaturated soil sample moisture. Background technique [0002] The engineering properties such as shear strength and permeability coefficient of soil are closely related to the water content of the soil. In the laboratory study of soil, it is often necessary to prepare a variety of soil samples with different water contents for various engineering property tests. The commonly used preparation method of the test piece is: take a certain quality of soil, add a certain quality of water, make a good test piece after fully stirring, seal it and wait for the moisture in the soil to diffuse and distribute evenly. The commonly used sealing method is to put the soil sample in a plastic bag, tie up the plastic bag and seal it (such as figure 1 shown). If the soil sample is tested before the moisture distribution is uniform, th...

AI Technical Summary

Problems solved by technology

If the permeability coefficient of the soil itself is very low, the waiting time may be very long, greatly affecting the progress of the test

The permeability coefficient of unsaturated soil is generally relatively low, so it often takes a long time to prepare unsaturated soil specimens with uniform water distribution.

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