Method for manufacturing remolding soil test specimen

Abstract

The invention provides a method for manufacturing a remolding soil test specimen in the technical field of geotechnical tests. A darby tray and a specimen making device are used. The darby tray is a rectangular tray, and an adjustable darby is attached to the upper part of the rectangular tray. The specimen making device consists of a concave press rod, a pad block and a transparent sleeve with scales. By using a one-step feeding mode, the characteristic of uniform loading of the existing servo hydraulic equipment in a laboratory is used; the problems of nonuniform and instable specimen making pressure, easy layering of the soil specimen and upper and lower density difference are solved; the visual scale characteristic of the specimen making device is used; the precise control on the test specimen volume is achieved; and further, the dry density is precisely controlled on the premise of precisely controlling the moisture content. The method is applicable to the preparation of cylindrical remolding soil test specimens, and has the characteristics that the system errors are small; the structure is simple; the laboratory equipment is integrally utilized; the multi-time repeated utilization can be realized, and the like.

Description

technical field [0001] . The invention patent is a method for making remolded soil samples. Background technique [0002] The physical and mechanical test of soil is a basic test for measuring the physical and mechanical properties of soil such as uniaxial compressive strength, triaxial compressive strength and triaxial shear strength. The sources of the test soil samples are: natural undisturbed soil samples and indoor remodeled soil samples. Natural undisturbed soil samples can reflect the original structure of the soil more realistically, but affected by factors such as sampling disturbance, sampling technology, and soil properties, the undisturbed soil test results are highly discrete, and it is difficult to control the factors and reshape the soil. The advantage of greater controllability of the test is a good complement to the undisturbed soil test, and is widely used in comparative test research. The remodeled soil test has also become a test method widely used to de...

AI Technical Summary

Problems solved by technology

[0005] .The patent of the present invention aims at many problems in the prior art, and provides a method of remolding soil samples. Through simple test equipment, it can solve the problems of uneven sample preparation pressure, easy layering of soil samples and differences in density between upper and lower parts. And the dry density can be precisely controlled under the premise of taking into account the moisture content

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