Incohesive soil freezing sample preparation equipment

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 testing, and more specifically, relates to a solid cylindrical non-cohesive soil freezing sample preparation equipment and a method for using the equipment. 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. Indoor resonance column The modulus and damping of each strain of the soil can be measured. To study the static and dynamic mechanical properties of non-cohesive soils under various strain levels, one of the most important aspects is the sample preparation in laboratory tests. [0003] The preparation method of the sample has a decisive influence on the test result. Initially, indoor experiments on naturally...

AI Technical Summary

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

Images