Rock asphalt fluid fine grinding, modifying and mixing process

A mixing process, rock asphalt technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of asphalt mixtures such as poor high temperature stability and low temperature crack resistance, poor aging resistance and fatigue resistance, and achieve temperature sensitivity The effect of reducing the resistance, enhancing the aging resistance and fatigue resistance, improving the high temperature stability and low temperature crack resistance

Inactive Publication Date: 2017-11-24
安徽和轩岩沥青科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The asphalt mixture prepared by the prior art has the disadvantages of poor high temperature stability and low temperature crack resistance, poor aging resistance and fatigue resistance

Method used

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  • Rock asphalt fluid fine grinding, modifying and mixing process
  • Rock asphalt fluid fine grinding, modifying and mixing process

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A rock bitumen fluid fine grinding modification mixing process, its components by weight: 38 parts of rock bitumen, 24 parts of base asphalt, 16 parts of diatomite, 15 parts of sodium tetrapolyphosphate, 8 parts of kaolin and 7 parts of surfactant part; its preparation method comprises the following steps:

[0022] a. Mix base asphalt, diatomaceous earth, sodium tetrapolyphosphate, kaolin and surfactant uniformly and pulverize to obtain mixed component A;

[0023] b. Crushing rock asphalt, dehydrating and activating at 120°C, then drying rock asphalt at 100°C until the water content in rock asphalt is less than 2%, and then drying rock asphalt at 162°C, Under the condition of the shearing speed of 2200r / min, the shearing mill is carried out until the fineness is greater than 170 mesh, and the mixed component B is obtained;

[0024] c. Add the mixing component A to the mixing component B, add it to the base asphalt, and stir at a speed of 560r / min, and then glue it at 1...

Embodiment 2

[0026] A rock bitumen fluid fine grinding modification mixing process, its components by weight: 40 parts of rock bitumen, 22 parts of base asphalt, 18 parts of diatomite, 12 parts of sodium tetrapolyphosphate, 11 parts of kaolin and 5 parts of surfactant part; its preparation method comprises the following steps:

[0027] a. Mix base asphalt, diatomaceous earth, sodium tetrapolyphosphate, kaolin and surfactant uniformly and pulverize to obtain mixed component A;

[0028] b. Crushing rock asphalt, dehydrating and activating at 128°C, then drying rock asphalt at 109°C until the water content in rock asphalt is less than 2%, and then drying rock asphalt at 171°C, Under the condition of the shearing speed of 2460r / min, the shearing mill is carried out until the fineness is greater than 170 mesh, and the mixed component B is obtained;

[0029] c. Add the mixing component A to the mixing component B, add it to the base asphalt, and stir at a speed of 560r / min, and then glue it at ...

Embodiment 3

[0031] A rock bitumen fluid fine grinding modification mixing process, its components by weight: 43 parts of rock bitumen, 30 parts of base asphalt, 23 parts of diatomite, 20 parts of sodium tetrapolyphosphate, 13 parts of kaolin and 12 parts of surfactant part; its preparation method comprises the following steps:

[0032] a. Mix base asphalt, diatomaceous earth, sodium tetrapolyphosphate, kaolin and surfactant uniformly and pulverize to obtain mixed component A;

[0033] b. Crushing rock asphalt, dehydrating and activating at 135°C, then drying rock asphalt at 116°C until the water content in rock asphalt is less than 2%, and then drying rock asphalt at 178°C, Under the condition of the shearing speed of 2670r / min, the shearing mill is carried out until the fineness is greater than 170 mesh, and the mixed component B is obtained;

[0034] c. Add the mixing component A to the mixing component B, add it to the base asphalt, and stir at a speed of 560r / min, and then glue it at...

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Abstract

The invention relates to the technical field of pavement construction, and concretely relates to a rock asphalt fluid fine grinding, modifying and mixing process. A rock asphalt fluid is prepared from the following components: 38 to 43 parts of rock asphalt, 22 to 30 parts of matrix asphalt, 16 to 23 parts of kieselguhr, 12 to 20 parts of sodium tetrapolyphosphate, 8 to 15 parts of kaolin, and 5 to 12 parts of surface active agent. According to the rock asphalt fluid fine grinding, modifying and mixing process provided by the invention, the sodium tetrapolyphosphate, the kaolin and the matrix asphalt are used as raw materials for preparing the rock asphalt, and the oil content in the rock asphalt is gradually oxidized and transformed into asphaltene, so that the viscosity of the rock asphalt is increased, and meanwhile, a high temperature performance of the rock asphalt is also improved; through the mixed use of the kieselguhr and the kaolin, the high-temperature stability and the low-temperature cracking resistance of the rock asphalt can be improved, so that a viscoelasticity range of the rock asphalt is increased, the temperature sensibility is reduced, and meanwhile, the ageing resistance and the fatigue resistance of the rock asphalt are improved.

Description

technical field [0001] The invention relates to the technical field of road surface construction, in particular to a process for finely grinding, modifying and mixing rock asphalt fluid. Background technique [0002] Natural rock asphalt is a mixture of asphaltene with a molecular weight of up to 10,000 and other chemical components such as hydrogen, nitrogen, and oxygen. Its chemical composition is as follows: carbon 81.7%, hydrogen 7.5%, oxygen 2.3%, nitrogen 1.95%, sulfur 4.4%, aluminum 1.1%, silicon 0.18% and other metals 0.87%. In these asphaltenes, almost every macromolecule contains polar functional groups composed of the above-mentioned elements, and these polar functional groups make the natural rock asphalt and the rock surface have a very strong adsorption force. [0003] The ability of the polar functional groups in rock asphalt to absorb the surface energy of silicate rock, quartzite, limestone, kaolinite and aluminosilicate is several times higher than that of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K13/02C08K3/34C08K3/32C08K5/41
CPCC08L95/00C08K2003/324C08L2201/08C08L2205/025C08L2555/22C08L2555/50C08K13/02C08K3/346C08K3/34C08K3/32C08K5/41
Inventor 鲍建平
Owner 安徽和轩岩沥青科技有限公司
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