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Thermal-resistant ceramsite coating used for asphalt pavements and preparation method thereof

A technology for asphalt pavement and coating, which is applied in the field of asphalt pavement to achieve the effects of complicated operation procedures, reduced heat absorption and convenient construction

Inactive Publication Date: 2013-10-09
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, measures such as modified asphalt, use of high-quality aggregates, skeleton embedded extrusion grading, and addition of anti-rutting agents are widely used in the road material industry to improve the high-temperature performance of asphalt pavement. However, due to the temperature-sensitive nature of asphalt materials, these measures are still The problem of high temperature rutting on asphalt pavement has not been fundamentally solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A heat-resistant ceramsite coating for asphalt pavement, in terms of mass percentage, the coating consists of 58.4% shale ceramsite with a particle size of 2.36mm, 29.2% epoxy resin 6101, and 2.9% alumina Powder, 7.3% polyamide polyamine curing agent YS-650 and 2.2% acetone are stirred evenly; among them, the refractive index of alumina powder is 2.8, and the particle size is ≤2um.

[0027] The above-mentioned preparation method of the thermal resistance type ceramsite coating for asphalt pavement comprises the following steps,

[0028] 1) Pour epoxy resin 6101, alumina powder, polyamide polyamine curing agent YS-650 and acetone into a mortar and stir evenly;

[0029] 2) Add shale ceramsite with a particle size of 2.36㎜ into the mortar of step 1) and stir evenly to obtain a mixture, wherein the sum of the stirring time of step 1) and step 2) is 9 minutes;

[0030] 3) Apply the mixture to the pavement structure within 30 minutes by coating, and the application dose is 0...

Embodiment 2

[0032] A heat-resistant ceramsite coating for asphalt pavement, in terms of mass percentage, the coating consists of 56% shale ceramsite with a particle size of 2.36mm, 30% epoxy resin 6101, and 3% alumina Powder, 7.5% polyamide polyamine curing agent YS-650 and 3.5% benzyl alcohol are stirred evenly; among them, the refractive index of alumina powder is 2.8, and the particle size is ≤2um.

[0033] The above-mentioned preparation method of the thermal resistance type ceramsite coating for asphalt pavement comprises the following steps,

[0034] 1) Pour epoxy resin 6101, alumina powder, polyamide polyamine curing agent YS-650 and acetone into a mortar and stir evenly;

[0035] 2) Add shale ceramsite with a particle size of 2.36㎜ into the mortar of step 1) and stir evenly to obtain a mixture, wherein the sum of the stirring time of step 1) and step 2) is 8 minutes;

[0036] 3) Apply the mixture to the pavement structure within 30 minutes by coating, and the application dose is ...

Embodiment 3

[0038] A heat-resistant ceramsite coating for asphalt pavement, in terms of mass percentage, the coating consists of 59% shale ceramsite with a particle size of 2.36mm, 27% epoxy resin 6101, and 3% alumina Powder, 7.5% polyamide polyamine curing agent YS-650 and 3.5% benzyl alcohol are stirred evenly; among them, the refractive index of alumina powder is 2.8, and the particle size is ≤2um.

[0039] The above-mentioned preparation method of the thermal resistance type ceramsite coating for asphalt pavement comprises the following steps,

[0040] 1) Pour epoxy resin 6101, alumina powder, polyamide polyamine curing agent YS-650 and acetone into a mortar and stir evenly;

[0041] 2) Add shale ceramsite with a particle size of 2.36㎜ into the mortar of step 1) and stir evenly to obtain a mixture, wherein the sum of the stirring time of step 1) and step 2) is less than 7 minutes;

[0042] 3) Apply the mixture to the pavement structure within 30 minutes by coating, and the applicatio...

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Abstract

The invention discloses a thermal-resistant ceramsite coating used for asphalt pavements and a preparation method thereof. The coating is prepared by uniformly stirring the following components, by mass percent, 56-59 % of shale ceramsite, 27-30 % of binding materials, 1-3 % of filling materials, 4.5-7.5 % of a curing agent and 2-3.5 % of a diluent. Due to use of the shale ceramsite with porous inside, the coating is good in heat insulation and thus can reduce a temperature of an asphalt pavement surface for more than 6 DEG C under a maximum temperature in the summer, thereby substantially reducing rut harms of the asphalt pavements and prolonging a service life of the asphalt pavements. According to the invention, the coating is low in cost which is obviously lower than that of coatings of prior art, and a result of an application test for the coating shows that skid resistance of the pavement satisfies technical requirements. The coating can substantially reduce heat absorption capacity of the asphalt pavements, greatly reduces temperature of the asphalt pavements, meanwhile is simple in formula, convenient to construct, and does not influence the skid resistance of the asphalt pavements.

Description

technical field [0001] The invention belongs to the technical field of asphalt pavement, and relates to an asphalt pavement coating, in particular to a thermal resistance ceramsite coating for asphalt pavement and a preparation method thereof. Background technique [0002] As a heat-absorbing material, asphalt mixture has a heat absorption rate of 0.85 to 0.95. The high absorption rate of asphalt pavement to sunlight is the main reason for the high temperature of asphalt pavement. In most parts of our country, the highest temperature in summer can reach 35°C-40°C. Under continuous sunlight, a large amount of heat is absorbed by the asphalt pavement and accumulated in the asphalt pavement, and the temperature of the asphalt pavement can reach 63°C-68°C. And make the asphalt pavement produce rutting. Rutting diseases on asphalt pavement mainly include: ① excessive deformation of the pavement surface reduces the flatness of the pavement; ② the thickness of the asphalt layer at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/50C04B26/10
Inventor 申爱琴郭寅川赵秋华马宝富
Owner CHANGAN UNIV