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An efficient and low-loss rubber black treatment method for airport pavement

A treatment method, gum black technology, applied in cleaning methods, road surface cleaning, construction, etc., can solve the problems of difficult to effectively restore the skid resistance of the road surface, incomplete removal of gum black, and low removal efficiency, so as to restore the road surface resistance Sliding performance, pavement damage reduction, and easy-to-break effects

Active Publication Date: 2022-08-05
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 1. The removal efficiency is not high, that is, there are problems such as incomplete removal of glue black in grooves and pores or slow overall removal speed
[0012] 2. It is easy to cause damage to the pavement. Once the micro-texture structure or macro-texture structure is damaged, even if the glue black is removed, the skid resistance of the pavement is difficult to recover effectively

Method used

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  • An efficient and low-loss rubber black treatment method for airport pavement

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] In the present embodiment, a method for processing rubber black on airport pavement is provided, comprising the following steps:

[0077] Step 1: Release liquid nitrogen to the rubber black on the airport pavement. The thickness of the rubber black is 2 mm, and the liquid nitrogen release rate is calculated by formula (1).

[0078] Step 2, through the action of liquid nitrogen, the temperature of the rubber black is lowered, the high elastic state is released, and the glass transition temperature is reached.

[0079] In step 3, the rubber black at the glass transition temperature is treated by a high-pressure water flushing method, wherein the working water pressure of the high-pressure water is 15Mpa.

[0080] Step 4: Recycle the removed rubber black and other impurities.

Embodiment 2

[0082] In the present embodiment, a method for processing rubber black on airport pavement is provided, comprising the following steps:

[0083] Step 1. Release liquid nitrogen to the rubber black on the airport pavement. The thickness of the rubber black is 4 mm. The thickness of the rubber black when calculating the liquid nitrogen release rate is H. 1 =2mm.

[0084] Step 2, through the action of liquid nitrogen, the temperature of the rubber black is lowered, the high elastic state is released, and the brittle temperature is reached.

[0085] In step 3, the rubber black at the brittle temperature is treated by a high-pressure water flushing method, wherein the working water pressure of the high-pressure water is 20 MPa.

[0086] Step 4: Recycle the removed rubber black and other impurities.

[0087] Step 5, repeat steps 1 to 4, the thickness of the rubber black in the second liquid nitrogen release rate calculation is H 2 =2mm.

Embodiment 3

[0089] In the present embodiment, a method for processing rubber black on airport pavement is provided, comprising the following steps:

[0090] Step 1: Release liquid nitrogen to the rubber black on the airport pavement. The thickness of the rubber black is 2 mm, and the liquid nitrogen release rate is calculated by formula (1).

[0091] Step 2, through the action of liquid nitrogen, the temperature of the rubber black is lowered, the high elastic state is released, and the brittle temperature is reached.

[0092] In step 3, the rubber black at the brittle temperature is processed by the shot blasting impact method, and the shot blasting machine travels at a speed of 6m / min.

[0093] Step 4: Recycle the removed rubber black and other impurities.

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Abstract

The invention discloses a high-efficiency and low-loss processing method for rubber black on airport pavement surface, including step 1, releasing a low-temperature medium to the rubber black of the airport runway; state to reach a low temperature state; step 3, processing the rubber black in a low temperature state by a mechanical force removal method; step 4, recycling the removed rubber black. The invention stems from the recognition of the defects of the related technology, and the consideration of the structure, material properties and formation process of the rubber black. By introducing the effect of the low temperature medium, the speed of removing the glue is improved, and the removal of the rubber black in the pores and grooves is reduced. At the same time, it reduces the damage to the pavement when removing the rubber black, so as to better achieve the purpose of removing the glue at the airport: to restore the anti-skid performance of the pavement.

Description

technical field [0001] The invention relates to the technical field of airport pavement maintenance, in particular to an efficient and low-loss rubber black treatment method for airport pavement. Background technique [0002] The airport pavement is an important part of aviation infrastructure, and the anti-skid performance is an important indicator to measure whether the airport pavement can guarantee the safe take-off and landing of aircraft. The anti-skid performance of airport pavement is greatly affected by the texture of the pavement, mainly including the micro-texture and macro-texture of the pavement. [0003] Microtexture structures refer to structures with a wavelength of less than 0.5 mm. The microtexture structure mainly characterizes the surface uneven structure of the aggregate particle itself, which provides the most basic anti-slip force for the pavement. The macroscopic texture structure refers to the structure with a wavelength between 0.5-50mm, which mai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01H1/00E01H1/10
CPCE01H1/001E01H1/101
Inventor 王声乐王国昊江磊梁文顾兴宇
Owner SOUTHEAST UNIV