Concrete sample polishing device for nanometer indentation experiments

Abstract

The invention particularly discloses a concrete sample polishing device for nanometer indentation experiments. By the aid of the concrete sample polishing device, problems of high time and labor consumption and poor polishing precision due to the fact that existing nanometer indentation concrete samples are manually polished can be solved. The concrete sample polishing device is characterized in that an abrasive paper fixing table and a vertical rotary shaft are arranged on a base platform; a rotary arm is arranged at the upper end of the vertical rotary shaft, a polishing rod is arranged at the front end of the rotary arm, a sample box is arranged at the lower end of the polishing rod, a pushing spring sleeves the polishing rod, a locking bolt is arranged on a side wall of the sample box, a horizontal rotary shaft is arranged at the rear of the rotary arm, and a plug pin penetrates the rotary arm; limit levers are arranged on the left side and the right side of the rotary arm, a supporting seat is arranged on one of the left side and the right side of the rotary arm, an alternating-current electromagnet and a rotary spring are arranged on the supporting seat, and the rotary spring is connected with the rotary arm; compression iron rods are arranged on the left side and the right side of the abrasive paper fixing table, the rear ends of the compression iron rods are hinged onto the abrasive paper fixing table, and magnets are inlaid in the abrasive paper fixing table and are positioned between the front ends of the compression iron rods. The concrete sample polishing device has the advantages that the operation efficiency can be greatly improved, and the polishing precision can be guaranteed.

Description

technical field [0001] The invention relates to an auxiliary device for preparing test pieces in civil engineering, in particular to a light-splitting device for concrete test pieces in nano-indentation experiments. Background technique [0002] The traditional indentation technology only considers the plastic deformation part of the material, and does not consider the elastic deformation of the material. The nano-indentation mechanical measurement technology can obtain the microscopic hardness and elastic modulus of the material through the establishment of a mechanical analysis model, which is a cutting-edge test. method. [0003] At present, the research on concrete has gone deep into the microscopic level, and many concretes need to carry out micron and nanoscale experiments, such as nanoindentation and other experiments. However, before conducting the nanoindentation experiment, the surface of the concrete needs to be polished. Since the sample required for the nano-i...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of time-consuming and labor-intensive manual grinding of the existing nano-indentation concrete specimens and poor precision in sectioning, the present invention provides a nano-indentation experiment concrete specimen polishing device

Images