Cement-based material forming test die for embedding electrode

Abstract

The invention discloses a cement-based material forming test die for embedding an electrode. The cement-based material forming test die comprises a base, a test die main body and a pressing cover. The base is composed of a large cube and four small cubes. The small cubes are arranged at four corners of the large cube, two sides of the base are provided with grooves, and two sides of the base are provided with pin holes penetrating the grooves respectively. A pressing cover main board is provided with an electrode slot, two side wings of the pressing cover are provided with a cube protrusion and a pin hole respectively, the pressing cover is buckled in the groove of the base, the pressing cover and the base are connected to be a whole through a pin, and the test die main body is placed on the base and fixed to the base through the cube protrusion positioned on the pressing cover. The die can prevent the electrode embedded in the vibrating process from being inclined, a formed cement sample is flat in surface, so test results such as electrical conductivity, pressure sensitivity and electrochemical behaviors of the sample are more accurate; during the vibration, the test die main body can be attached the base to reduce slurry leakage, and the cement-based material forming test die is simple in structure, low in manufacturing cost and high in reusing rate.

Description

technical field [0001] The invention relates to a cement sand rubber test mold, in particular to a cement-based material forming test mold for pre-embedding electrodes. Background technique [0002] When studying the conductivity, pressure sensitivity and electrochemical behavior of cement samples, the electrode is the bridge connecting the tested sample and the test instrument. The main method of making cement electrodes is pre-embedding, and the pre-embedded electrodes are mainly copper sheets and stainless steel wire mesh. Using embedded electrodes, whether the tested sample is in good contact with the electrode, whether the sample surface is flat, whether the tested electrode is perpendicular to the bottom surface of the sample, etc. will directly affect the accuracy and authenticity of the test results. [0003] The test mold used to prepare cement-based material samples is generally an open cavity; when using this mold to make a cement sample, first pour the cement mi...

AI Technical Summary

Problems solved by technology

However, the electrode is easy to tilt during the vibration process, especially when the fluidity of the cement mixture is relatively small, the vibration will cause the cement slurry and the electrode to not be tightly bonded, and even cracks will appear at the interface between the two; the insertion of the electrode after vibration is difficult. It is difficult to smooth the surface of the sample, resulting in uneven surface and irregular shape of the sample, so that there will be large errors in the test results of conductivity and electrochemical behavior, and problems such as stress concentration will also appear in the pressure sensitivity experiment.

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