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Modified asphalt and preparation method thereof

A technology of modified asphalt and matrix asphalt, used in building components, building insulation materials, buildings, etc., can solve the problems of poor high temperature stability, poor fatigue resistance, weak anti-aging ability, etc., to prevent delamination, improve mechanical Effects of performance, high adhesion and heat resistance

Inactive Publication Date: 2016-12-21
JIANGXI PROVINCIAL TRANSPORTATION ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing modified asphalt still has problems such as poor high temperature stability, poor fatigue resistance and weak anti-aging ability, and the modified asphalt will delaminate during storage, which will affect the paving effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The invention provides a modified asphalt, comprising the following components in parts by weight:

[0039] 75 parts of base asphalt, 10 parts of star-shaped SBS, 1 part of waste rubber powder, 5 parts of waste plastic, 1 part of crosslinking agent, 1.5 parts of compatibilizer, 0.5 parts of diatomaceous earth, 0.8 parts of nylon fiber, 0.3 parts of carbon black, 0.5 part of talcum powder, 0.3 part of stabilizer, 0.1 part of zinc oxide and 0.04 part of ester solvent.

[0040] The particle size of the waste rubber powder is 100 mesh; the waste plastic is plastic particles with a particle size of 105 mesh.

[0041] The stabilizer includes the following components in parts by weight: 30 parts of sulfur, 50 parts of polyoxyethylene and 20 parts of polyethylene glycol. The crosslinking agent is trimethoxysilane aluminum sulfate. The ester solvent is butyl acetate.

Embodiment 2

[0043] The invention provides a modified asphalt, comprising the following components in parts by weight:

[0044] 95 parts of base asphalt, 1 part of star-shaped SBS, 5 parts of waste rubber powder, 1 part of waste plastic, 4 parts of cross-linking agent, 0.8 part of compatibilizer, 1.2 parts of diatomaceous earth, 0.5 parts of nylon fiber, 0.7 parts of carbon black, 0.3 part of talcum powder, 0.3 part of stabilizer, 0.02 part of zinc oxide and 0.01 part of ester solvent.

[0045] The particle size of the waste rubber powder is 150 mesh; the waste plastic is plastic particles with a particle size of 115 mesh.

[0046] The stabilizer includes the following components in parts by weight: 50 parts of sulfur, 30 parts of polyoxyethylene and 30 parts of polyethylene glycol. The crosslinking agent is aluminum isopropoxide and acrylic acid. The ester solvent is ethyl acetate.

Embodiment 3

[0048] The invention provides a modified asphalt, comprising the following components in parts by weight:

[0049] 83 parts of base asphalt, 7 parts of star-shaped SBS, 2.5 parts of waste rubber powder, 2.5 parts of waste plastic, 1.2 parts of crosslinking agent, 1 part of compatibilizer, 0.8 parts of diatomaceous earth, 0.67 parts of nylon fiber, 0.55 parts of carbon black, 0.45 part of talcum powder, 0.25 part of stabilizer, 0.05 part of zinc oxide and 0.03 part of ester solvent.

[0050] The particle size of the waste rubber powder is 130 mesh; the waste plastic is plastic particles with a particle size of 110 mesh.

[0051] The stabilizer includes the following components in parts by weight: 40 parts of sulfur, 40 parts of polyoxyethylene and 25 parts of polyethylene glycol. The crosslinking agent is trimethoxysilane, aluminum isopropoxide and acrylic acid. The ester solvent is butyl acetate.

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Abstract

The invention discloses modified asphalt which comprises the following components in parts by weight: 75-95 parts of matrix asphalt, 1-10 parts of star-shaped SBS, 1-5 parts of waste rubber powder, 1-5 parts of waste plastic, 1-4 parts of a cross-linking agent, 0.8-1.5 parts of a compatilizer, 0.5-1.2 parts of kieselguhr, 0.5-0.8 part of nylon fiber, 0.3-0.7 part of carbon black, 0.3-0.5 part of talcum powder, 0.1-0.3 part of a stabilizer, 0.2-0.1 part of zinc oxide and 0.01-0.04 part of an ester solvent. The invention further provides a preparation method of the modified asphalt. The modified asphalt which is prepared by using the preparation method that different components are matched is good in high-temperature stability, low-temperature anti-cracking property and anti-fatigue property, relatively high in softening point and relatively good in adhesion property.

Description

technical field [0001] The invention relates to the field of asphalt technology, more specifically, the invention relates to a modified asphalt and a preparation method. Background technique [0002] At present, with the continuous increase of traffic volume and the continuous increase of heavy-duty vehicles, some asphalt pavements have various degrees of early damage such as ruts, cracks, and potholes shortly after they are officially opened to traffic, which not only causes great economic losses. Losses have also brought greater hidden dangers to driving comfort and driving safety. Therefore, the development of road traffic puts forward higher requirements on the performance of asphalt pavement, which makes it difficult for ordinary asphalt mixture to meet the requirements of asphalt pavement. [0003] Modified asphalt refers to the asphalt binder made by adding modifiers such as rubber, resin, high molecular polymer, natural asphalt, ground rubber powder or other materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L21/00C08L101/00C08L77/00C08L71/02C08K13/02C08K3/04C08K3/34C08K3/22C08K3/06
CPCC08L95/00C08L2205/035C08L2205/16C08L2555/80C08L2555/84C08L53/02C08L21/00C08L101/00C08L77/00C08L71/02C08K13/02C08K3/04C08K3/34C08K2003/2296C08K3/06
Inventor 董亚伦
Owner JIANGXI PROVINCIAL TRANSPORTATION ENG GRP
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