Self-healing type bituminous concrete and preparation method thereof

A kind of asphalt concrete, self-healing technology, applied in the field of self-healing asphalt concrete and its preparation, can solve the problems that cannot fundamentally solve road diseases, consume a lot of manpower, material resources, financial resources, etc., and achieve saving maintenance and repair costs, economic and social benefits Good, evenly graded results

Inactive Publication Date: 2015-12-30
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The main maintenance methods for rutting and cracking of asphalt pavement on high-grade roads in my country are laying a layer of slurry seal, micro-surface overlay or partial repair of the pavement, but this can only temporarily alleviate the damage of the

Method used

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  • Self-healing type bituminous concrete and preparation method thereof
  • Self-healing type bituminous concrete and preparation method thereof
  • Self-healing type bituminous concrete and preparation method thereof

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Experimental program
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Embodiment 1

[0043] Embodiment 1, preparation of self-healing asphalt concrete and its performance test:

[0044] One, the preparation method of self-healing asphalt concrete, specifically comprises the following steps:

[0045] 1) Mix 76.9 parts of crushed stones of 10-15mm, 100 parts of crushed stones of 5-10mm, 25.6 parts of crushed stones of 3-5mm, 35.6 parts of stone chips not larger than 3mm and 18.2 parts of mineral powder to obtain mineral materials , the gradation composition of the mineral aggregate is shown in the following table 4, then, prepare 100 parts of mineral aggregate, 5.6 parts of SBS modified asphalt and 2.2 parts of steel wool by mass parts respectively,

[0046] Table 4. Gradation composition

[0047]

[0048] 2) Put 100 parts of ore in a pan and preheat to 180°C in an oven; then preheat SBS modified asphalt to 150°C to make it liquid; preheat steel wool to 120°C ℃;

[0049] 3) Pour the mineral material into the mixing pot, then mix the steel wool into the min...

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Abstract

The invention discloses self-healing type bituminous concrete and a preparation method thereof. The self-healing type bituminous concrete is prepared from, by mass, 100 parts of mineral material, 5-6 parts of SBS modified bitumen and 1.5-2.5 parts of magnetic metal. The preparation method includes the following steps of firstly, preheating mineral material, modified bitumen and magnetic metal to obtain preheated mineral material, preheated modified bitumen and preheated magnetic metal respectively; secondly, mixing and stirring preheated mineral material, preheated modified bitumen and preheated magnetic metal to obtain a mixture; thirdly, forming the mixture to obtain the self-healing type bituminous concrete. The self-healing type bituminous concrete is more uniform in grade distribution, and the surface contact of concrete and steel wool is tighter; due to the steel wool, the rigidity of the bituminous concrete is enhanced, the bituminous concrete is prevented from cracking; by heating the steel wool through electromagnetic waves, bitumen is softened, and a bituminous pavement is healed again. The service life of the bituminous pavement is prolonged, traffic delay time is shortened, maintenance expenses are saved, and economic and social benefits are good.

Description

technical field [0001] The invention belongs to the field of asphalt concrete preparation, and in particular relates to a self-healing asphalt concrete and a preparation method thereof. Background technique [0002] At present, the early diseases of the asphalt pavement of expressway in our country are rutting and cracking as the main form, especially on the expressway with heavy load and channelized traffic, rutting and cracking are more common, and the road surface milling and resurfacing caused by rutting and cracking Maintenance and repair costs are increasing year by year at a high rate. [0003] The main maintenance methods for rutting and cracking of asphalt pavement on high-grade roads in my country are laying a layer of slurry seal, micro-surface overlay or partial pavement repair, but this can only temporarily alleviate the damage of the pavement, and cannot fundamentally solve the road disease. If the pavement is severely damaged, the entire pavement needs to be ...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B14/48C04B14/28C04B20/00
Inventor 裴晓光李福起甘为民胡金龙
Owner CHINA NAT OFFSHORE OIL CORP
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