Concrete performance test device under the joint action of constant tensile load and erosive medium

Abstract

The invention discloses a concrete performance test device under the joint action of continuous constant axial tensile stress and erosive medium, relates to the field of concrete durability test, and solves the problem that the existing test device cannot realize the test of concrete under the joint action of constant stress and medium erosion Problems with performance testing. The test device includes: a bottom plate, on which the column is fixedly connected; a connecting seat, fixed in the middle of the bottom plate; a first slider, hinged on the connecting seat and can rotate around the connecting seat; an intermediate pressure plate, passing through the column and fixed on the center of the column The limit point; the upper pressing plate passes through the column; the pull rod passes through the through hole of the middle pressing plate and the upper pressing plate, one end of the pulling rod is connected to the spherical joint, and the second pulling head is connected to the spherical joint; the other end of the pulling rod is screwed with a nut; The disc spring is sleeved on the tie rod and is located between the middle pressing plate and the upper pressing plate; one end of the concrete specimen is connected to the first pulling head, and the other end is connected to the second pulling head; and a medium circulation device.

Description

technical field [0001] The invention belongs to the field of concrete durability testing, and in particular relates to a concrete performance testing device under the joint action of continuous constant axial tensile stress and erosive medium to study the behavior of corrosive gases or ions in concrete under different levels of constant tensile stress Transmission performance and mechanism. Background technique [0002] In the prior art concrete durability test device under the joint action of tensile stress and erosive medium, the device uses the reaction force of the compression spring to apply tensile stress to the concrete clamped between the tensile chucks, and the whole device is placed in chemical corrosion The environmental conditions of medium erosion are simulated in the box, and different water pressures are applied to the concrete specimens through the impermeability meter, but the contact between the tensile chuck of the device and the concrete specimen will dir...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a concrete performance test device under the joint action of continuous constant axial tensile stress and erosive medium. The main purpose is to solve the problem of tensile stress eccentricity, stress relaxation, and The problem that the performance test of concrete under the coupled action of stress and medium erosion cannot be realized

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