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Construction method for prevention and treatment of reflective cracks in overlay of airport pavement

A technology of reflecting cracks and construction methods, applied in the direction of roads, roads, road repairs, etc., can solve the problem of infiltration into cracks, achieve the effect of increasing interlayer cohesion, avoiding the formation of reflective cracks, and reducing loss

Active Publication Date: 2021-03-16
CHINA HARBOUR ENGINEERING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Finally, if the pavement structure is unfavorable for waterproofing and drainage, water will seep into the cracks and form hydrodynamic forces under load. When the amount of water reaches a certain level, the damage speed will be astonishing.

Method used

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  • Construction method for prevention and treatment of reflective cracks in overlay of airport pavement
  • Construction method for prevention and treatment of reflective cracks in overlay of airport pavement

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the embodiments, so that those skilled in the art can implement it with reference to the description.

[0022] The structure of airport pavement 10 of the present invention is as figure 1 As shown, the present invention provides a kind of construction method of prevention and treatment of airport pavement 10 overlay layer reflective cracks, comprising the following steps:

[0023] Step 1, clean the surface of the airport pavement 10 and the cracks produced on the surface, and open slots 11 along the extension direction of the cracks at the cracks to widen the cracks. The width of the slots 11 is 3cm, and the depth extends to the airport pavement 10 out of 20 for base level;

[0024] Step 2, a plurality of reinforcements are arranged at intervals in the slot 11, such as figure 2 As shown, each reinforcing member includes a pair of support ribs 91, a fixed cone 92, a pair of extension r...

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Abstract

The invention discloses a construction method for preventing and controlling reflection cracks of an airfield pavement overlay. The construction method comprises the following steps: step 1, cleaningthe surface of an airfield pavement and cracks produced on the surface, and forming a slot in the extending direction of the crack at the crack to widen the crack; step 2, arranging multiple stiffeners in the slot at intervals; step 3, pouring rubber-asphalt pouring sealant at a temperature of 225 DEG C into the slot, laying MAC modified asphalt, and laying a layer of glass fiber grid after the MAC modified asphalt cools to room temperature; and step 4, laying a stress absorbing layer on the glass fiber grid, wherein the stress absorbing layer comprises a high viscosity asphalt layer, a stonelayer and a common asphalt layer from bottom to top. According to the construction method for preventing and controlling the reflection cracks of the airfield pavement overlay, load resistance capacity of the airfield pavement is effectively improved, reflection cracks are prevented from being formed upward, and the service life of the airfield pavement is prolonged.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a construction method for preventing and treating reflection cracks in overlay layers of airport pavement. Background technique [0002] Pavement cracks caused by the comprehensive influence of load and environment have become one of the most important structural damage forms of asphalt pavement. The crack itself has little effect on the performance of the asphalt pavement, but its existence destroys the integrity and continuity of the pavement structure, and leads to the weakening of the structural strength to a certain extent. First of all, overloading will inevitably cause irreversible damage to the pavement. When the aircraft load passes through the crack, the asphalt crack at the joint is subjected to a continuous eccentric load shear-positive load bending tension-eccentric load shear stress cycle mode. Under the repeated action of the first mode, the cracks at this place wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C23/09
Inventor 杨佳岩
Owner CHINA HARBOUR ENGINEERING
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