A non-cohesive soil freezing sample preparation equipment

A technology without cohesive soil and equipment, which is applied in the field of geotechnical engineering tests, can solve the problems of incomplete frozen samples, difficulty in preparing saturated samples, and multiple disturbances of samples, so as to achieve simple and easy sample preparation process and improve production efficiency. The effect of sample efficiency, good uniformity and reproducibility

Active Publication Date: 2020-02-14
HUAZHONG UNIV OF SCI & TECH
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  • Application Information

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Problems solved by technology

Although this freezing sample preparation method can prepare samples in a loose state, it will cause multiple disturbances to the samples, and it is difficult to prepare saturated samples. At the same time, it is difficult to remove the frozen samples from the saturator due to the cementation of ice. resulting in incomplete frozen samples

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  • A non-cohesive soil freezing sample preparation equipment
  • A non-cohesive soil freezing sample preparation equipment
  • A non-cohesive soil freezing sample preparation equipment

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Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0039] Please refer to figure 1 , A non-cohesive soil freezing sample preparation device of the present invention includes: a sample preparation chamber assembly, a control chamber assembly, an axial transmission assembly, a low-temperature circulating bath, a multi-channel signal acquisition and monitoring assembly, and auxiliary equipment assemblies.

[0040](1) Sample preparation chamber com...

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Abstract

The invention discloses incohesive soil freezing sample preparation equipment which includes a sample preparation chamber assembly, a temperature control chamber assembly, an axial transmission assembly, a low temperature circulating bath and signal acquisition monitoring assembly and a vacuum pumping assembly. The sample preparation chamber assembly is internally provided with a sample preparation chamber and used for holding samples and filtering water on the samples, the temperature control chamber assembly is used for low temperature freezing the samples, the sample preparation chamber assembly is located inside the temperature control chamber assembly, the axial transmission assembly is used for pushing out the samples after a test finished, the low temperature circulating bath and signal acquisition monitoring assembly is used for collecting test and monitoring data, and the vacuum pumping assembly is used for vacuumizing inside the temperature control chamber assembly. The sample preparation equipment can be used for directly preparing saturated remolded samples of gravel, gravel soil, sand soil, silty soil and other incohesive soils, the sample preparation process is simpleand easy, operability of the whole equipment is high, the efficiency of sample preparation is improved, and the time is saved.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering tests, and more specifically relates to a solid cylindrical non-cohesive soil freezing sample preparation device and a method for using the device. Background technique [0002] The indoor static and dynamic triaxial instrument can independently control the dynamic confining pressure and dynamic axial force, and can simulate most of the stress paths encountered in engineering. It is a necessary equipment for studying the mechanical properties of soil under various stress conditions. The indoor resonance column It can measure the modulus and damping of soil under various strain levels. To study the static and dynamic mechanical properties of cohesionless soil under various strain levels, a very important link is the sample preparation of laboratory tests. [0003] The method of sample preparation has a decisive influence on the test results. Initially, the undisturbed samples were used for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/42
CPCG01N1/42
Inventor 苗雨阮滨房慧明黄家乐钟逸翟苇航
Owner HUAZHONG UNIV OF SCI & TECH
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