Forming mold for testing inter-layer bonding properties of concrete and test method thereof

Abstract

The invention relates to a forming mold for testing inter-layer bonding properties of concrete and a test method thereof and belongs to the technical field of highway engineering. The mold comprises acylindrical mold, a rectangular base, a measuring ruler and a troweling plate, wherein a fixed clamping groove is formed in the rectangular base, and the bottom end of the cylindrical mold is clampedin the fixed clamping groove; a plurality of leveling bolts are arranged around the rectangular base; the cylindrical mold comprises a left semi-circular shell and a right semi-circular shell, and one side of the left semi-circular shell is hinged with one side of the right semi-circular shell; the other side of the left semi-circular shell is detachably connected with the other side of the rightsemi-circular shell; and the measuring ruler is vertically arranged, and the bottom end of the measuring ruler is fixed on the troweling plate which is horizontally arranged. The mold provided by theinvention is used for integrated formation of an inter-layer binder and a concrete structure layer, can accurately control the dosage and the thickness of the binder, is convenient for fixing and disassembling test specimens, and avoids the disturbance to the inter-layer bonding properties caused by human factors to the maximum limit, thereby achieving the purpose of accurately evaluating the properties of the inter-layer binder.

Description

technical field [0001] The invention belongs to the technical field of highway engineering in traffic and transportation engineering, and in particular relates to a forming mold for testing interlayer bonding performance of concrete and a testing method thereof. Background technique [0002] The pavement structure is a multi-layer composite structure composed of different materials. Due to the difference in the interlayer binder itself, the bonding ability between different structural layers is significantly different. Under the action of driving load, different interlayer bonding will It directly affects the ability of the pavement structure to transfer loads, and at the same time affects the stress and strain levels inside the pavement structure, especially the interlayer joints, and even seriously affects the normal performance and service life of the pavement structure. At this stage, in the indoor test of the bonding ability of the interlayer binder, the concrete struct...

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Problems solved by technology

[0002] The pavement structure is a multi-layer composite structure composed of different materials. Due to the difference in the interlayer binder itself, the bonding ability between different structural layers is significantly different. Under the action of driving load, different interlayer bonding will It directly affects the ability of the pavement structure to transfer loads, and at the same time affects the stress and strain levels inside the pavement structure, especially the interlayer joints, and even seriously affects the normal performance and service life of the pavement structure

At this stage, in the indoor test of the bonding ability of the interlayer binder, the concrete structure layer is generally prepared and cured separately and then the interlayer binder is applied. There is no good integrated molding tool, which is different from the interlayer binder and the concrete structure. The actual project of simultaneous paving and maintenance of layers does not conform to the actual engineering, ignoring the influence of the interpenetration of the interlayer binder and the concrete structure layer in the process of preparation and maintenance, and it is also difficult to accurately control the application amount and thickness of the binder, so that Evaluation results affecting the bonding ability of interlayer binders

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