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Asphalt concrete modifier and application thereof

An asphalt concrete and modifier technology, applied in the field of asphalt concrete modifiers, can solve the problems of complex modification process, asphalt aging, and high engineering cost, and achieve the advantages of improving adsorption function, improving use environment problems, and good storage stability. Effect

Active Publication Date: 2015-04-08
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects and deficiencies in the prior art, the present invention solves the problem that although the polymer modifier in the prior art can improve the road performance of asphalt pavement to a certain extent, the modification process is complicated, and the asphalt needs to be heated during the modification process. to a higher temperature, causing part of the asphalt to age, and the problem of higher project cost

Method used

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  • Asphalt concrete modifier and application thereof
  • Asphalt concrete modifier and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The modified asphalt concrete in this embodiment is made of the following raw materials according to mass percentage: 94.5% of aggregate, 4.43% of asphalt, 0.55% of willemite, 0.25% of willemite, 0.22% of zoltite, 0.01% of sodium polyacrylate, JL -G02FX type amino-terminated polyol ester 0.02%, cetyltrimethylammonium chloride 0.02%;

[0027] The surface modification solution is made by mixing sodium polyacrylate, JL-G02FX type amino-terminated polyol ester, cetyltrimethylammonium chloride and ethanol at a mass ratio of 0.5︰1︰1︰5;

[0028] The preparation method of the modified asphalt concrete of the present embodiment comprises the following steps:

[0029] Step 1, drying, pulverizing and sieving the zinc ore, willemite and zeolite to obtain 60-80nm zinc ore powder, willemite and zeolite powder;

[0030] Step 2, adding the zinc ore powder, willemite powder and zeolite powder of step 1 into the surface modification solution and stirring, and then placing in a drying bo...

Embodiment 2

[0033] The modified asphalt concrete of the present embodiment is made by the following raw materials by mass percentage: 93.7% of aggregate, 4.6% of asphalt, 0.89% of willemite, 0.43% of willemite, 0.31% of zoltite, 0.03% of sodium polyacrylate, JL-G02FX type amino-terminated polyol ester 0.02%, cetyltrimethylammonium chloride 0.02%;

[0034] The surface modification solution is made by mixing sodium polyacrylate, JL-G02FX type amino-terminated polyol ester, cetyltrimethylammonium chloride and ethanol at a mass ratio of 1.5︰1︰1︰5;

[0035] The preparation method of the present embodiment modified asphalt concrete comprises the following steps:

[0036] The difference from Example 1 is that step 1, after drying, crushing and sieving 60-100nm zincite powder, willemite powder and zeolite powder;

Embodiment 3

[0038] The modified bituminous concrete of the present embodiment is made by mass percentage of following raw materials: aggregate 94.1%, asphalt 4.2%, willemite 1.07%, willemite 0.36%, zoltite 0.1%, sodium polyacrylate 0.06%, JL-G02FX type amino-terminated polyol ester 0.05%, cetyltrimethylammonium chloride 0.06%;

[0039] The surface modification solution is made by mixing sodium polyacrylate, JL-G02FX type amino-terminated polyol ester, cetyltrimethylammonium chloride and ethanol at a mass ratio of 1.2:1:1:6;

[0040] The preparation method of the modified asphalt concrete of the present embodiment comprises the following steps:

[0041] The difference from Example 1 is that step 1, after drying, pulverizing and sieving the willemite, willemite and zeolite, obtains 10-50nm zincite powder, willemite powder and zeolite powder;

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Abstract

The invention relates to an asphalt concrete modifier and its application. The modifier contains willemite. The asphalt concrete modifier also contains zincite and stannite. The zincite is nanoscale zincite powder. The stannite is nanoscale stannite powder. It shows through researches that willemite can be used as a modifier which can be used to enhance pavement performance during paving of an asphalt mixture. It shows through further researches that zincite and stannite can obviously raise adsorption function of the asphalt mixture and can adsorb harmful gas in automobile exhaust. Meanwhile, compatibility between zincite, willemite and stannite and the asphalt concrete can be raised after JL-G02FX amino-terminated polyol ester is added into a surface modifier of the asphalt concrete, and ultrafine inorganic powder modified asphalt has good storage stability.

Description

technical field [0001] The invention belongs to the technical field of road materials, and in particular relates to an asphalt concrete modifier and its application. Background technique [0002] With the development of highway transportation, the traffic volume is increasing day by day, the proportion of large-scale vehicles, heavy-loaded and overloaded vehicles is gradually increasing, and the requirements for road surfaces are getting higher and higher. my country has a vast territory and large climate differences. Ordinary asphalt has been difficult to meet the requirements of road use. The rutting and moving permanent deformation of the asphalt pavement under the action of vehicle load in hot season, the reflection of low temperature cracking and semi-rigid base cracking in winter Water damage such as cracks, potholes and looseness formed during the rainy season and spring melt season often occurs in new roads. In order to further improve the road performance of asphalt...

Claims

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Application Information

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IPC IPC(8): C04B22/00C04B24/12
Inventor 王朝辉孙晓龙冯炜王新岐侯明业葛娟陈姣范巧娟狄升贯
Owner CHANGAN UNIV
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