Stress relaxation corrosion test all-in-one machine and test method

Abstract

The invention discloses a stress relaxation corrosion test all-in-one machine and a test method. The all-in-one machine comprises a base, wherein a mounting frame is fixedly arranged on the base, andthe mounting frame comprises two vertical mounting plates arranged in parallel left and right and a plurality of parallel cross bars connected between the two mounting plates; through holes are formedin the centers of the two mounting plates, and a loading mechanism and an anchorage device are sequentially arranged on the outer side of one mounting plate; a force sensor and an anchorage device are sequentially arranged on the outer side of the other mounting plate; the loading mechanism is fixed with the base, and the force sensor is fixed with the mounting plate; and a corrosion box is arranged in the center of the mounting frame, and sealable mounting holes allowing a to-be-tested steel sample to penetrate through are formed in the left side and the right side of the corrosion box. Thestress relaxation corrosion test all-in-one machine disclosed by the invention can test the stress relaxation performance of the steel under a coupling corrosion condition, so that the stress relaxation corrosion test all-in-one machine has a guiding value for the performance of the steel used in a corrosion environment.

Description

technical field [0001] The invention relates to the field of material performance testing, in particular to a stress relaxation corrosion test integrated machine and a test method. Background technique [0002] In the construction industry, prestressed steel is a very important metal building material with a wide range of applications. At a specified temperature and under specified constraints, the stress of a metallic material decreases with time, a phenomenon known as stress relaxation. For prestressed steel, stress relaxation performance is a key performance index, so in the actual application environment, it is usually necessary to test the stress relaxation performance of prestressed steel to determine whether the prestressed steel meets the corresponding standards and standards. Require. For example, the national standard GB / T 5224-2014 strictly stipulates the stress relaxation performance of "steel strands for prestressed concrete". [0003] Bridge cables are usual...

AI Technical Summary

Problems solved by technology

[0003] Bridge cables are usually made of parallel steel wires or steel strands. Due to the long-term load and exposure to the natural environment, especially in areas with severe air pollution, areas with severe water pollution, coastal and marine environments, corrosion damage is extremely easy to occur, and severe cases may also be damaged. Huge loss of life and property due to collapse

[0004] Existing testing instruments and methods basically test the stress relaxation performance and corrosion performance of steel separately, and there is a lack of instruments and methods for testing the stress relaxation performance of steel in a corroded state.

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