Full-automatic collecting liquid-plastic limit combined measuring system

Abstract

The invention discloses a full-automatic collecting liquid-plastic limit combined measuring system. The full-automatic collecting liquid-plastic limit combined measuring system comprises a liquid-plastic limit combined measuring instrument and a computer, wherein the liquid-plastic limit combined measuring instrument comprises a mounting frame, a cone head, an electromagnet, a displacement transducer, a displacement display screen, a CPU (central processing unit), a communication module, a control switch and a specimen cup; the specimen cup is placed on the mounting frame; the electromagnet, the displacement transducer, the displacement display screen, the CPU, the communication module and the control switch are arranged on the mounting frame; the cone head is arranged above the opening of the specimen cup and is adsorbed on the electromagnet; the displacement transducer is connected with the computer in a signal manner through the CPU and the communication module; and a double logarithmic chart is stored in the computer. The full-automatic collecting liquid-plastic limit combined measuring system provided by the invention can be used for acquiring, measuring and reading data in a full automatic manner and drawing a curve, so that the accuracy of the test data is improved, the work amount of experimenters is reduced, the cost of human resources is reduced, and the test efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of soil liquid-plastic limit measurement in civil engineering, in particular to a fully automatic collection liquid-plastic limit joint measurement system. Background technique [0002] Liquid limit and plastic limit are important physical characteristic indexes of cohesive soil, which reflect the influence of water in soil on soil properties, and are an important basis for estimating the bearing capacity of foundation soil. The liquid limit in the limit water content can use the cone method, and the plastic limit can use the rolling method. The liquid-plastic limit combined determination method is a test method proposed to improve the liquid limit of the disc instrument and the plastic limit of the rolling method. Iron, display screen, control switch and sample cup. During the test, according to the scope of the soil sample in the plastic state, the two parameters of the cone penetration depth h and water...

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Problems solved by technology

[0003] However, in the test process of the liquid-plastic limit joint determination method, manual drawing of the depth and water content curves is prone to human errors, and then manual reading of the data on the curves will inevitably lead to secondary errors, which affects the accuracy of the data ; and this method has many steps of drawing, slow speed, and low efficiency, so that the workload of the experimenters is relatively large, and the cost of human resources is relatively high

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