Treatment method of cavity beneath road slab of airfield pavement

Abstract

The invention belongs to the technical field of treatment and maintenance of cavities beneath road slabs of an airfield pavement, and especially relates to a treatment method of a cavity beneath a road slab of an airfield pavement. Traditional treatment methods of cavities beneath road slabs of an airfield pavement adopt a cement mud-jacking or slab treating technology, and has the disadvantages of long time and low flexibility. The treatment method of the cavity beneath the road slab of an airfield pavement comprises the following steps: evaluating the load transfer ability of the cavity beneath the road slab of the airfield pavement and a seam based on the detection of the airfield pavement by a heavy falling weight deflectometer, injecting a two-component polymer material to the position of the cavity beneath the road slab of the airfield pavement according to above obtained detection result, and allowing the two-component material to expand in the cavity beneath the road slab of the airfield pavement and cure in a short time in order to fill the cavity and improve the load transfer ability of the seam. The method has the characteristics of fastness in treatment, no maintenance and high flexibility; and compared with traditional methods, the method has the characteristics of fastness, durability, economic property, environmental protection and high flexibility. The method has wide development prospect in the field of the treatment and the maintenance of the cavity.

Description

technical field [0001] The invention belongs to the technical field of emptying treatment and maintenance at the bottom of an airport roadway panel, in particular to a method for treating emptying at the bottom of an airport roadway panel. Background technique [0002] Due to the unreasonable selection of the base material of the airport concrete pavement, the untimely filling of the joints and cracks, the defects of the concrete pavement itself and the drainage system of the pavement, the insufficient compactness of the base, temperature changes and other natural environmental influences, the impact load of the aircraft landing Under the repeated action of the airport concrete pavement, it is easy to produce plastic deformation, which leads to the emptying of the bottom of the concrete slab. The concrete road slab is prone to fracture and damage under the action of heavy load, which poses a huge threat to the take-off and landing of the aircraft. Therefore, the research on ...

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Problems solved by technology

[0004] In order to solve the above-mentioned problems, the present invention discloses a method for treating the emptying of the bottom of the slab of the airport aisle, which aims to solve the problems that the traditional treatment method for the emptying of the slab bottom of the airport aisle requires a long time, low flexibility, and incomplete emptying treatment.

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