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A kind of asphalt viscosity reducer and asphalt composition

A technology of asphalt composition and viscosity reducer, which is applied in building structure, building components, climate change adaptation, etc. It can solve the problem of low temperature tensile and brittle crack resistance of asphalt mixture, and reduce the viscosity of modified asphalt at 175°C , reduce asphalt high temperature viscosity and other problems, to achieve the effect of reducing anti-rutting performance, good lubricity, low high temperature viscosity

Active Publication Date: 2017-02-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The viscosity reducer can reduce the viscosity of modified asphalt at 175°C; the synthetic paraffin in the viscosity reducer is a non-elastic material, which is easy to be brittle under low temperature conditions, resulting in a decrease in the low temperature tensile and brittle crack resistance of the asphalt mixture , and most of the low-melting organic waxes reduce the viscosity of asphalt at high temperature, and also reduce the viscosity at 60°C, reducing the anti-rutting performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The mass percent of the asphalt viscosity reducer raw material is:

[0041] Polyethylene wax: 6.5wt%;

[0042] Amino resin: 2wt%;

[0043] Carolamide: 3.7wt%;

[0044] Coconut fatty acid diethanolamide: 87.8wt%;

[0045] Add polyethylene wax, amino resin, carolamine and coconut oil fatty acid diethanolamide to the reaction vessel respectively according to the proportion, stir and heat up to 105°C, and stir for 30 minutes to make an asphalt viscosity reducer; by weight percentage, by matrix 0.5wt% of asphalt was added to the base asphalt, the mixing temperature was 147°C, and the stirring time was 50min to obtain an asphalt composition.

Embodiment 2

[0047] The mass percent of the asphalt viscosity reducer raw material is:

[0048] Microcrystalline wax: 14.2wt%;

[0049] Polyacrylate: 3.6wt%;

[0050] Carolamide: 1.5wt%;

[0051] Fatty acid polyoxyethylene ester: 80.7wt%;

[0052] Add microcrystalline wax, polyacrylate, carolamine and polyoxyethylene fatty acid ester to the reaction vessel respectively according to the proportion, stir and heat up to 85°C, and stir for 20 minutes to make an asphalt viscosity reducer; by weight percentage, by matrix 3wt% of the asphalt was added to the base asphalt, the mixing temperature was 140°C, and the stirring time was 45min to obtain an asphalt composition.

Embodiment 3

[0054] The mass percent of the asphalt viscosity reducer raw material is:

[0055] Stearic acid: 26wt%;

[0056] Phenolic resin: 4.3wt%;

[0057] Carolamide: 2.5wt%;

[0058] Alkylphenol polyoxyethylene ether: 67.2wt%;

[0059] Add stearic acid, phenolic resin, carolamine and alkylphenol polyoxyethylene ether into the reaction vessel respectively according to the proportion, stir and heat up to 100°C, and stir for 25 minutes to make asphalt viscosity reducer; in weight percentage, press 4.5wt% of the base asphalt was added to the base asphalt, the mixing temperature was 135°C, and the stirring time was 35min to obtain an asphalt composition.

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PUM

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Abstract

The invention discloses asphalt viscosity reducer and asphalt composition. The asphalt viscosity reducer comprises the following components in percentage by weight: 5-30% of an additive A, 1-10% of an additive B, 1-10% of kaloamine and 50-93% of an additive C. The components are uniformly mixed in a proportion, then the asphalt viscosity reducer is obtained, and the asphalt viscosity reducer is mixed with matrix asphalt to obtain the asphalt composition. The asphalt viscosity reducer has a good viscosity reduction function on asphalt, and the asphalt composition with the asphalt viscosity reducer has low high-temperature viscosity, good lubrication performance and good viscosity and ductility at 60 DEG C, meanwhile has the needle penetration and softening point the same as those of the base asphalt, and has the advantages of low production cost, simple and convenient preparation method, wide application range and the like.

Description

technical field [0001] The invention relates to an asphalt viscosity reducer and an asphalt composition using the viscosity reducer. Background technique [0002] Asphalt mixtures currently used in road engineering are generally divided into two types according to the mixing construction temperature: cold mix asphalt mixture CMA (Cold Mix Asphalt) and hot mix asphalt mixture HMA (Hot Mix Asphalt). Cold-mix asphalt mixture is generally mixed and paved with emulsified asphalt or liquid asphalt and aggregate at room temperature, without heating the aggregate and binder, which can save a lot of energy. However, the initial road performance of cold-mix asphalt mixture is poor, and it is difficult to meet the requirements of important projects such as expressways and heavy-duty traffic roads. Hot mix asphalt mixture is the most widely used mixture with the best road performance. However, in the production process of hot mix asphalt mixture, asphalt and stone materials need to be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L23/06C08L61/20C08L71/00C08L91/06C08L33/04C08L61/06C08K5/17C08K5/20C08K5/09C04B26/26
CPCY02A30/30
Inventor 陈闯陈保莲张静范思远宁爱民李志军
Owner CHINA PETROLEUM & CHEM CORP
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