Centering device for concrete sample split test

Abstract

The invention discloses a centering device for a concrete sample split test. The centering device comprises two parts, namely a bottom and an upper part; the centering device is characterized in thatthe upper structures of the bottom are the same; each of the bottom and the upper part comprises a bottom plate, a pair of supporting plates and a pressure head; the bottom plate is rectangular; a rowof springs are respectively arranged on edges of a pair of opposite sides of the bottom plate; the supporting plates are respectively arranged on the springs, and two supporting plates are parallel to each other; and the pressure head is strip-shaped, is arranged on the bottom plate and positioned on a centerline of the bottom plate parallel to the supporting plate. The top surface of the pressure head is arc-shaped. When a split test of concrete samples is performed, after the two parts are aligned on the upper and lower surfaces of the samples, the supporting plates achieve a stabilizing effect, and the upper and lower pressure heads are positioned on the same axis to complete centering, so that follow-up experiments are conveniently conducted. The centering device disclosed by the invention has the characteristics of being simple in structure, light in weight, convenient to operate and capable of avoiding size limitation of the samples, and the concrete split test can be helped tobe rapidly performed.

Description

technical field [0001] The invention relates to an auxiliary device for splitting experiments of concrete specimens, in particular to a centering device for splitting experiments of concrete specimens. Background technique [0002] The concrete splitting test is a necessary experimental method for the determination of the splitting tensile strength of concrete, the determination of the carbonation depth of concrete, the determination of the penetration depth of chloride ions, etc., and has a wide range of applications. The key to the success of the concrete splitting experiment lies in whether the upper and lower surfaces of the concrete specimen can form a linear pressure when the concrete specimen is compressed, and the linear pressure must be aligned up and down, so that the concrete specimen will be damaged by splitting. Otherwise, the misalignment of the upper and lower linear pressures will easily lead to the failure of the concrete splitting experiment. [0003] Acco...

AI Technical Summary

Problems solved by technology

During the experiment, first draw parallel lines on the top and bottom surfaces of the formed concrete test block to determine the position of the splitting surface, but there are human errors in the manual marking in the process, which affects the accuracy of marking, and the subsequent During the operation, it is necessary to manually place the spacer to align with the drawn line. Therefore, the position of the splitting surface is often not guaranteed to be in the center of the specimen, thus affecting the accuracy of the experiment.

Due to the existence of the above problems, the difficulty and error of the experiment are relatively large.

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