A kind of asphalt mixture anti-bending electromagnetic self-healing experiment without demoulding experimental fixture

Abstract

The invention discloses an asphalt mixture anti-bending electromagnetic self-healing experiment without demoulding test fixture, which includes a lower bounding box and an upper bounding box, and is characterized in that: the inner side of the upper bounding box is slidably connected with an auxiliary upper bounding box through a chute. A bounding box, the inner side of the lower bounding box is slidably connected with an auxiliary lower bounding box through a chute, upper spring mounting plates are arranged on both sides of the upper bounding box and the auxiliary upper bounding box, and the lower bounding box and the auxiliary lower bounding box Both sides of the bounding box are provided with a lower spring mounting plate, a closed clamping spring is connected between the upper spring mounting plate and the lower spring mounting plate, and a transverse spring mounting plate is installed on both sides of the auxiliary lower bounding box, The present invention is used in the flexural test and self-healing experiment of asphalt mixture specimens. The upper and lower shells of the clamp are closed by spring pulling, which can automatically close and collect the specimen materials, improve the accuracy of the experiment, and can perform cyclic experiments without demoulding until Specimen failure improves experimental efficiency.

Description

technical field [0001] The invention belongs to the technical field of performance testing of asphalt mixture specimens, and in particular relates to an asphalt mixture anti-bending electromagnetic self-healing experiment without demoulding experimental fixture. Background technique [0002] Many previous studies have proved that after the asphalt material has been damaged to a certain degree, the strength and stiffness of the asphalt will be partially recovered after an intermission period is given. This is the self-repair behavior of asphalt material. Healing, but the speed is very slow, and it is required that there is no cyclic effect of traffic load. When the binder in the asphalt mixture is subjected to high temperature in the intermittent period, the repair rate of asphalt will increase. Asphalt healing will repair the asphalt concrete pavement caused by low temperature, fatigue It can improve the service life of the asphalt concrete pavement, reduce the maintenance a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an asphalt mixture anti-bending electromagnetic self-healing experiment without demoulding experimental fixture, to solve the problem of material loss caused by manual collection of test pieces during the anti-bending self-healing experiment, and to solve the problem of performing anti-bending During the self-healing test, it is difficult for the anti-bending self-healing test fixture to automatically collect the fragments of the bending test, and it is difficult to carry out the test without demoulding the test piece

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