Cement compression resistance clamp for compression testing machine and usage method of clamp

Abstract

The invention discloses a cement compression resistance clamp for a compression testing machine and a usage method of the clamp. The cement compression resistance clamp for the compression testing machine includes a shell body, a telescopic rod, a bearing plate, a sliding block, a test piece position calibrating column, a pressure head and a plurality of springs, wherein an opening is formed in one side surface of the shell body; a through hole is formed in the top of the shell body; the upper end of the telescopic rod is fixedly connected with the bearing plate; the lower end of the telescopic rod penetrates through the through hole and is inserted into the shell body; the upper part of the sliding block is connected with the lower end of the telescopic rod; the pressure head is fixed at the bottom of the sliding block; one end of each spring is connected with the inner side surface at the top of the shell body; the other end of each spring is fixed at the upper part of the sliding block; the bearing plate is mounted on the compression testing machine; the test piece position calibrating column and a cement mortar test piece to be tested are fixed on the inner side at the bottom of the shell body; the cement mortar test piece to be tested is in contact with one side of the test piece position calibrating column; the pressure head is positioned right above the cement mortar test piece to be tested. When the compressive strength of the cement mortar test piece is tested, the cement mortar test piece to be tested can be clamped by the cement compression resistance clamp.

Description

technical field [0001] The invention belongs to the field of simple test equipment for cement mortar test pieces, and relates to a clamp and a using method thereof, in particular to a cement anti-pressure clamp for a pressure testing machine and a using method thereof. Background technique [0002] The strength of a material is the ability of the material to resist failure under stress. Usually, the stress inside the material is mostly caused by the action of external force (or load). As the external force increases, the stress also increases until the stress exceeds the limit that the material's internal particles can resist, that is, the strength limit, and the material is damaged. The strength is divided into tensile strength, compressive strength, flexural strength, shear strength and torsional strength due to different types of external forces. Strength is the most important mechanical property of cement mortar, because the structure of cement mortar specimen is mainly...

AI Technical Summary

Problems solved by technology

However, the test of the compressive strength of the cement mortar specimen cannot be carried out in the existing technology, and the most important reason is that there is no equipment or method to disclose the compressive fixture for the cement mortar specimen, which seriously affects the compressive strength of the cement mortar performance evaluation

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