Process of finishing slits of surface layer of airplane runway

Abstract

A process of finishing silts in the surface layer of a runway involves a first step in which a slit is heated such that the surface of the slit is dry, and that the capillary holes of the slit are opened up. The surface of the slit is then provided with a coating of an asphalt synthetic agent. The coating is subsequently heated to caused th molecules of the asphalt synthetic agent to diffuse into the capillary holes of the slit, thereby preventing water from finding its way into the gradation layer of the runway. The slit is provided with a soft interface capable of preventing the water from finding its way into the slits of the surface layer of the runway. The soft interface is securely attached to the slits.

Description

(1) Technical field: [0001] The invention relates to a construction method for waterproofing all cracks in the surface layer of an airport runway for a newly-built airport runway or an airport runway that has been built and is in use. (two) background technology: [0002] Taking an airstrip with a length of 3,000 meters x a width of 60 meters x a thickness of 30 centimeters as an example, when building runways (including take-off and landing runways, taxiways, aprons and test pads, etc.) in all domestic and foreign airports, the construction The sequential steps are as follows: [0003] A. If figure 1 As shown, above the primary distribution layer A, materials such as cement concrete (PC) or reinforced cement concrete (RC) are used as the surface layer 10 of the airport runway; [0004] B. If figure 2 As shown, along the width of the airstrip, several surface layer units 10A equal in length to the length of the runway are paved in parallel at intervals of 6 meters; [0...

AI Technical Summary

Problems solved by technology

[0015] Its deficiency is: in the old area section 14 of the bottom surface of the surface layer 30' of the new airstrip, the existing secondary construction joints 17 or through cracks 18 are sealed without waterproofing. Under the action of the reaction force of the load and the internal stress generated by thermal expansion and contraction due to weather changes, the secondary construction joint 17 or through crack 18 gradually cracks toward the surface of the new airstrip surface layer 30', resulting in the surface of the new airstrip. After the layer 30' has been used for a period of time, reflection cracks 31 will be produced on its surface (such as Figure 20 shown), so the water W can directly enter the gradation layer A from the reflective crack 31, and gradually produce cavities and fracture subsidence, and then expand the width of the reflective crack 31 and produce falling gravel 19, shortening the new aircraft even more. 30' service life of runway surface

[0016] In view of the fact that the conventional construction methods for treating various cracks in the surface layer of the airport runway cannot effectively prevent water from entering the graded layer, resulting in the formation of many surface layer cracks and debris falling off on the surface layer of the airport runway, shortening the use of the airstrip The service life and harm to the safety of the aircraft, and in severe cases, the airport will be closed for emergency repairs, or the parking lot will be suspended. Moisture enters the gradation layer and prolongs the service life of the surface layer of the airport runway

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