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Rubber modifier, rubber modified asphalt mixture and preparation method of rubber modifier

A rubber modifier and rubber modification technology, applied in building insulation materials, building components, buildings, etc., can solve the problems of affecting popularization and application, non-renewable, high cost, reduce energy consumption, improve water stability, improve The effect of using performance

Active Publication Date: 2015-01-28
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the SBS modifier has problems such as high cost and non-renewability, which to a certain extent affect its further application in modified asphalt mixture.

Method used

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  • Rubber modifier, rubber modified asphalt mixture and preparation method of rubber modifier
  • Rubber modifier, rubber modified asphalt mixture and preparation method of rubber modifier
  • Rubber modifier, rubber modified asphalt mixture and preparation method of rubber modifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A rubber modifier, the mass percent of each component is: rubber powder 65%, matrix asphalt 25%, lime 5%, admixture 5%, and its preparation method comprises the following steps:

[0034] 1) Weighing of each raw material, take base asphalt, rubber powder, lime and admixture according to the above ratio;

[0035] 2) Mixing and granulation of raw materials, first heat the weighed base asphalt to 140°C, add rubber modifier and mix evenly, then add admixture and lime, mix evenly, and use extrusion method to granulate to obtain granular rubber modifier.

Embodiment 2

[0037] A rubber modifier, the mass percent of each component is: rubber powder 75%, matrix asphalt 15%, lime 8%, admixture 2%, and its preparation method comprises the following steps:

[0038] 1) Weighing of each raw material, take base asphalt, rubber powder, lime and admixture according to the above ratio;

[0039] 2) Mixing and granulation of raw materials. First, heat the weighed base asphalt to 135°C, add rubber modifier and mix evenly, then add admixture and lime, mix evenly, and granulate by extrusion to obtain granular rubber modifier.

Embodiment 3

[0041] A rubber modifier, the mass percentage of each component is: rubber powder 70%, matrix asphalt 15%, lime 10%, admixture 5%, and its preparation method comprises the following steps:

[0042] 1) Weighing of each raw material, take base asphalt, rubber powder, lime and admixture according to the above ratio;

[0043] 2) Mixing and granulation of raw materials, first heat the weighed base asphalt to 145°C, add rubber modifier and mix evenly, then add admixture and lime, mix evenly, and use extrusion method to granulate to obtain granular rubber modifier.

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Abstract

The invention discloses a rubber modifier, a rubber modified asphalt mixture and a preparation method of the rubber modifier. The rubber modifier comprises the following raw materials by weight percentage: 65-75% of rubber powder, 15-25% of matrix asphalt, 5-10% of lime and 1-5% of an admixture. The preparation method of the rubber modifier is simple, the various components for preparing the rubber modifier only need to be simply heated, mixed and granulated, the heating temperature involved in the preparation method is relatively low, and the problems of energy consumption in the preparation process and environmental pollution caused by heating of the matrix asphalt to the relatively high temperature are reduced. By applying the rubber modifier to an asphalt mixture, the prepared rubber modified asphalt mixture has good road using performance. Compared with an existing matrix asphalt mixture and an SBS (styrene-butadiene-styrene) modified asphalt mixture, the performances of the rubber modified asphalt mixture are far better than those of the matrix asphalt mixture and are basically consistent with those of the SBS modified asphalt mixture, and the cost is far lower than that of the SBS modified asphalt mixture.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a rubber modifier, a rubber-modified asphalt mixture and a preparation method thereof. Background technique [0002] Due to its good driving safety and comfort, the proportion of asphalt concrete in high-grade highways is increasing, especially in expressways. The proportion of asphalt pavement in expressways in my country has exceeded 95%. In order to meet the needs of large-scale and heavy-duty transportation on high-grade roads in my country, it has become an inevitable trend to replace base asphalt with modified asphalt. Studies have shown that the use of suitable modified asphalt according to regional characteristics and load requirements can not only reduce the early disease of the pavement, but also significantly improve the comprehensive road performance of the pavement and prolong the service life of the pavement. At present, there are many kinds of modifiers for modif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L21/00C08L95/00C08L35/06C08K3/22C04B24/36C04B26/26
Inventor 吴少鹏雷敏肖飞鹏瑟吉.阿迈克翰尼尔陈美祝
Owner WUHAN UNIV OF TECH
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