A flexural toughness testing machine for fiber-reinforced reinforced concrete

Abstract

The invention discloses a bending toughness tester for fiber reinforced concrete. The bending toughness tester is characterized in that a servo motor is fixed on the top of a vertical three-layer support framework; an output shaft of the servo motor is vertically stretched downwards into the framework and connected with the upper end of a screw rod of a ball screw rod nut pair through a speed reducer and a coupler, and the ball screw rod nut pair is vertically arranged in the center of the support framework; the lower end of the screw rod is movably stretched into a hollow inner cavity of a pushing rod; the upper end of the pushing rod is fixed on a nut of the ball screw rod nut pair; the lower end of the pushing rod is locked with an inclined-plane gasket and a spoke type sensor integrally through a stressed stud which penetrates through central thread holes of the pushing rod, the inclined-plane gasket and the spoke type sensor; a jacking head is coaxially mounted at the bottom of the spoke type sensor; three sample supports are symmetrically mounted on a stressed base; four support adjusting gaskets are symmetrically arranged under the stressed base along the center of the support framework. The bending toughness tester for the fiber reinforced concrete takes the servo motor as power, so that the problems of large noise and serious pollution of current hydraulic power are solved; the bending toughness tester for the fiber reinforced concrete is simple and convenient to operate and capable of easily testing the bending toughness tester of the fiber reinforced concrete.

Description

technical field [0001] The invention relates to the technical field of fiber-reinforced reinforced concrete, in particular to a bending toughness testing machine for fiber-reinforced reinforced concrete. Background technique [0002] Adding glass fiber, prestressed carbon fiber or other fibers into reinforced concrete or pasting them layer by layer can effectively improve the structural mechanical properties of reinforced concrete and improve the reinforcement effect. Therefore, in recent years, the research and application of fiber reinforced reinforced concrete has become more and more widely. [0003] At present, there is no clear standard for measuring the flexural toughness of fiber-reinforced reinforced concrete in China, and there is no special testing equipment. Internationally, the flexural toughness test of fiber reinforced concrete adopts the centrally loaded circular plate method, the English name: Standard Test Method for Flexural Toughness of Fiber Reinforced ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a bending toughness testing machine for fiber reinforced reinforced concrete. The testing machine is designed according to the ASTMC1550 test standard, which solves the problem of large noise of similar foreign equipment, has no pollution, and is convenient and easier to use. Determination of Flexural Toughness of Fiber Reinforced Reinforced Concrete

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