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Rubber asphalt modifier, modified asphalt, asphalt mixture and its preparation and application

A technology of rubber asphalt and modified asphalt, which is applied to building insulation materials, building components, buildings, etc., can solve the problems of strong odor, serious environmental pollution, and high emission of harmful gases, and achieve low odor and excellent low-temperature bending damage Response, to achieve the effect of environmental protection production

Active Publication Date: 2021-08-31
山东高速材料技术开发集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the present invention provides a rubber asphalt modifier and a rubber asphalt modifier prepared from the rubber asphalt modifier for the disadvantages of high odor, high emissions of harmful gases such as hydrogen sulfide and sulfur dioxide, and serious environmental pollution when producing rubber asphalt. Modified asphalt and asphalt mixture and corresponding preparation method and application

Method used

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  • Rubber asphalt modifier, modified asphalt, asphalt mixture and its preparation and application
  • Rubber asphalt modifier, modified asphalt, asphalt mixture and its preparation and application
  • Rubber asphalt modifier, modified asphalt, asphalt mixture and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. The preparation process of the low-odor rubber asphalt modifier is as follows: first mix various materials in proportion through a solid powder mixer, and the proportion of materials is shown in Table 1:

[0037] Table 1 Low odor rubber modifier material composition ratio

[0038]

[0039] Feed the above-mentioned mixed materials into the twin-screw machine, control the temperature at 220-230°C, and control the plasticizing time of the materials in the screw for 10-15 minutes, so that the reaction of the fatty alcohol is complete, and the modified rubber powder can be obtained. Odor rubber asphalt modifier.

[0040] 2. The low-odor rubber asphalt prepared with the above modifiers is compared with the traditional rubber asphalt prepared with ordinary rubber powder (30 mesh tire rubber powder). The process is shown in Table 2, and the technical indicators are shown in Table 3:

[0041] Table 2 Preparation process and material comparison of different rubber asphalt ...

Embodiment 2

[0061] 1. The preparation process of the low-odor rubber asphalt modifier is as follows: firstly, mix various materials uniformly through a solid powder mixer in proportion, and the proportion of materials is shown in Table 7:

[0062] Table 7 Low odor rubber modifier material composition ratio

[0063]

[0064] Feed the above-mentioned mixed materials into the twin-screw machine, control the temperature at 220-230°C, and control the plasticization time of the materials in the screw for 10-15 minutes, so that the reaction of fatty alcohol is complete, and the modified asphalt rubber with low odor can be obtained. sex agent.

[0065] 2. Prepare low-odor rubber-modified asphalt with the above-mentioned modifier, the composition of which is 25% modifier by weight, 75% is 70# petroleum asphalt, and the preparation temperature is 190°C. The production process can reduce the emission of harmful gases such as hydrogen sulfide and sulfur dioxide, reduce the concentration of odor, ...

Embodiment 3

[0070] 1. The preparation process of the low-odor rubber asphalt modifier is as follows: firstly mix various materials in proportion through a solid powder mixer, and the proportion of materials is shown in Table 8:

[0071] Table 8 Low odor rubber modifier material composition ratio

[0072]

[0073] Feed the above-mentioned mixed materials into the twin-screw machine, control the temperature at 220-230°C, and control the plasticization time of the materials in the screw for 10-15 minutes, so that the reaction of fatty alcohol is complete, and the modified asphalt rubber with low odor can be obtained. sex agent.

[0074] 2. Prepare low-odor rubber-modified asphalt with the above-mentioned modifier, the composition of which is 25% modifier by weight, 75% is 70# petroleum asphalt, and the preparation temperature is 190°C. . The production process can reduce the emission of harmful gases such as hydrogen sulfide and sulfur dioxide, reduce the concentration of odor, and impr...

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Abstract

The invention relates to the field of road engineering, and specifically provides a rubber asphalt modifier, modified asphalt, asphalt mixture and preparation and application thereof. The rubber asphalt modifier includes or consists of the following raw materials: waste tire rubber powder, fatty alcohol, catalyst, adsorbent and plasticizer, wherein the waste tire rubber powder accounts for 65-80wt% of the total raw materials. When using the modifier of the present invention to produce rubber asphalt, the release amount of harmful gases such as hydrogen sulfide and sulfur dioxide can be reduced, and the odor emission concentration can be reduced; and when the modified asphalt of the present invention is used to produce asphalt mixture, the vulcanization can also be effectively reduced. The release of hydrogen and sulfur dioxide can reduce the concentration of odor emissions, so as to realize the environmentally friendly production of rubber-asphalt mixture.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a rubber asphalt modifier, modified asphalt, asphalt mixture and its preparation and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Rubber asphalt processed from waste rubber tire powder and petroleum asphalt has good road performance such as high-temperature anti-rutting, low-temperature anti-cracking, anti-fatigue, anti-aging, etc., which have been proved by a large number of engineering examples at home and abroad, and have been obtained in many countries in the world. Promote apps. Rubber asphalt can not only provide high-quality construction materials for ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L19/00C08L45/02C08K3/24C08K5/12C08K5/05
CPCC08L19/003C08L95/00C08L2201/08C08L2207/24C08L45/02C08K3/24C08K5/12C08K5/05C08L19/00
Inventor 张树文王立志曲恒辉朱辉张圣涛赵品晖徐强任瑞波王鹏耿立涛
Owner 山东高速材料技术开发集团有限公司
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