Method for evaluating repairing effect of steel bridge deck asphalt concrete pavement pit slot repairing interface

Abstract

The invention relates to the technical field of road building materials, and particularly discloses a method for evaluating a repairing effect of a steel bridge deck asphalt concrete pavement pit slot repairing interface. The method comprises the following steps: moulding an asphalt concrete test piece by using a gyratory compactor, cutting the test piece into two halves, and bonding the two halves of the test piece together by using a repairing agent; bonding the repaired test piece onto a steel plate mould; performing a loading test, and recording relevant data in the test process; when the maximum tension in a certain period is reduced to be 25% that in a first period, stopping the loading test; establishing a curvilinear relationship between the load and the displacement in each period to obtain fatigue fracture energy; establishing a relationship between the maximum load and the loading period number in each period, regressing to obtain a coefficient b of a power index fatigue equation. According to the technical scheme, the problem that in the prior art, -a method for pre-evaluating the repairing effect of a steel bridge deck asphalt concrete pavement pit slot repairing material is lacked is solved.

Description

technical field [0001] The invention relates to the technical field of road building materials, in particular to a method for evaluating the repairing effect of the repair interface of asphalt concrete pavement pits on steel bridge decks. Background technique [0002] my country's steel bridge deck pavement has entered a period of large-scale use. However, there is still a lack of systematic research on the maintenance and repair technology of steel bridge deck pavement. Most of them follow the maintenance technology and evaluation methods of high-grade asphalt pavement. Stress deformation and service performance are different from high-grade asphalt pavement, and the lack of maintenance and repair technology has exacerbated the development of diseases to a certain extent. Therefore, it is very urgent and important to study the repair materials, test methods and evaluation systems of steel bridge deck pavement maintenance and repair in depth, and to systematically establish s...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for evaluating the interface repair effect of asphalt concrete pavement pits on steel bridge decks, to overcome the lack of prior evaluation of the repair effect of pits and pits on steel bridge deck asphalt concrete pavement repair materials in the prior art method, it is impossible to preliminarily determine the repair effect of different repair materials after use

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