Sample preparation tool mold and method for measuring pull-out behavior of fibers in cement matrix

Abstract

The invention relates to the technical field of cement matrixes, and discloses a sample preparation tool mold and method for measuring the pull-out behavior of fibers in a cement matrix, the sample preparation tool mold comprises two symmetrically arranged support plates, the side walls, close to the bottom, of the two support plates are jointly and fixedly connected with a support plate, and a motor is installed on the side wall of the top of the support plate; the output end of the motor is connected with a reciprocating lead screw through a coupler, sliding grooves are symmetrically formedin the opposite side walls of the two supporting plates, sliding blocks are slidably connected into the sliding grooves, and the opposite ends of the two sliding blocks penetrate through groove openings of the corresponding sliding grooves, extend outwards, and are fixedly connected with lifting plates; and the upper ends of the two lifting plates are jointly and fixedly connected with a mold body. According to the sample preparation tool mold and method for measuring the drawing behavior of the fibers in the cement matrix, the interface bonding performance of the plant fibers and the cement matrix can be accurately represented.

Description

technical field [0001] The invention relates to the technical field of cement matrix, in particular to a sample preparation tooling mold and a method for measuring the drawing behavior of fibers in the cement matrix. Background technique [0002] Cement-based materials are currently the most used building materials in the world, but they are brittle and easy to crack. Studies have shown that fibers have a good control effect on the cracking of cement-based materials. Steel fibers and synthetic fibers can improve the toughness of concrete to a certain extent, but increase the cost of concrete. In order to effectively reduce the cost of fiber-doped concrete, researchers began to use plant fibers that are widely distributed in nature, cheap, and easy to obtain materials to replace traditional synthetic fibers. The application of plant fiber to cement-based composite materials can not only improve toughness, but also promote sustainable development, has ecological effects, and...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a sample preparation tooling mold and method for measuring the pulling behavior of fibers in a cement matrix, which has the advantage of being able to accurately characterize the bonding performance of the interface between plant fibers and cement matrix, and solves the problem of existing problems. There are technical problems that cannot accurately characterize the bonding performance of the interface between plant fiber and cement matrix

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