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Environment-friendly rubber asphalt and preparation method thereof

An environmentally friendly rubber and asphalt technology, applied in building insulation materials, building components, buildings, etc., can solve the problems of complex process, high cost of rubber asphalt, strict requirements, etc., to reduce environmental pollution, reduce production costs, and improve high temperature performance Effect

Inactive Publication Date: 2016-02-24
GUANGDONG PROVINCIAL ACAD OF BUILDING RES GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although the superiority of rubber asphalt is very prominent, due to the complicated activation of waste rubber powder and the large amount of asphalt, rubber asphalt has problems such as high cost, complicated process, and strict requirements.

Method used

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  • Environment-friendly rubber asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The environment-friendly rubber modifier provided by the present embodiment comprises components by mass percentage: base asphalt 72%, waste tire rubber powder and modifier 28% (wherein 20 mesh waste tire rubber powder 92%, 2% activator, 2% binder, 2% activator, 1% vulcanizing agent, 1% antioxidant), heat the base asphalt, the heating temperature is 185 °C, after the base asphalt is melted, waste rubber powder and modifier Mix evenly, pour it into the base asphalt, and manually stir for 10 minutes to mix the waste rubber powder and modifier into the base asphalt, use a high-speed shearer, stir at a speed of 1200 rpm for 12 minutes, and then use a 3500 rpm Stir at a speed of 12 minutes, and finally adjust to a speed of 5500 rpm and stir for 25 minutes, and carry out 60 minutes of stability development treatment to obtain environmentally friendly rubber asphalt.

[0033] Among them, the base asphalt is 70# base asphalt, which is better produced in China.

[0034] Waste t...

Embodiment 2

[0041] The environment-friendly rubber modifier provided by the present embodiment comprises components by mass percentage: 75% of matrix asphalt, waste tire rubber powder and 25% of modifier (wherein 40 mesh waste tire rubber powder 88%, 3% activator, 3% binder, 3% activator, 2% vulcanizing agent, 1% antioxidant), heat the base asphalt at 180°C, after the base asphalt is melted, mix waste rubber powder and modifier Mix evenly, pour it into the base asphalt, and manually stir for 10 minutes to mix the waste rubber powder and modifier into the base asphalt, use a high-speed shearer, stir at a speed of 1000 rpm for 15 minutes, and then use a 3000 rpm Stir at a speed of 15 minutes, and finally adjust to a speed of 5000 rpm and stir for 30 minutes, and carry out 80 minutes of stability development treatment to obtain environmentally friendly rubber asphalt.

[0042] Among them, the base asphalt is 90# base asphalt, which is better produced in China.

[0043] Waste tire rubber pow...

Embodiment 3

[0050] The environment-friendly rubber modifier provided by the present embodiment comprises components by mass percentage: base asphalt 78%, waste tire rubber powder and modifier 22% (wherein 40 mesh waste tire rubber powder 82%, 4% activator, 5% binder, 4% activator, 3% vulcanizing agent, 2% antioxidant), heat the base asphalt, the heating temperature is 175 °C, after the base asphalt is melted, waste rubber powder and modifier Mix evenly, pour it into the base asphalt, and manually stir for 10 minutes to mix the waste rubber powder and modifier into the base asphalt, use a high-speed shearer, stir at a speed of 800 rpm for 18 minutes, and then use a 2500 rpm Stir at a speed of 18 minutes, and finally adjust to a speed of 4500 rpm and stir for 35 minutes, and carry out 90 minutes of stability development treatment to obtain a new type of environmentally friendly rubber asphalt.

[0051] Among them, the base asphalt is 50# base asphalt, which is better produced in China.

[...

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Abstract

The invention discloses environment-friendly rubber asphalt. The environment-friendly rubber asphalt is prepared from, by mass, 72-78% of matrix asphalt and 22-28% of waste tire rubber powder and modifier. The waste tire rubber powder and modifier is mainly prepared from, by mass, 82-92% of waste tire rubber powder, 2-4% of an activating agent, 2-5% of a binding agent, 2-4% of an active agent, 1-3% of a vulcanizing agent and 1-2% of an antioxidant. According to the environment-friendly rubber asphalt, the waste tire rubber powder, waste oil and other waste materials can be recycled, and the use performance of the asphalt can be improved. The invention further discloses a preparation method of the environment-friendly rubber asphalt. According to the preparation method, the mode of activating the waste tire rubber powder is simple, cost is low, and the process is simple.

Description

technical field [0001] The invention belongs to the technical field of asphalt, and in particular relates to an environment-friendly rubber asphalt and a preparation method thereof. Background technique [0002] Asphalt is a temperature-sensitive material. In summer, the strength of asphalt mixture will decrease with the increase of temperature, which will soften the road surface. In winter, asphalt mixture will easily produce shrinkage cracks, which will cause cracks in the road surface. Therefore, it is necessary to Modification of asphalt to improve its performance at high and low temperatures. Modifiers for asphalt are mainly thermoplastic elastomeric polymers, such as polyisoprene, random or block copolymers of styrene and conjugated diene, and butyl rubber, etc., through modification, the asphalt has Excellent mechanical properties and dynamic properties, especially very good viscoelasticity, but due to the high price and large amount of modifiers, the cost of modifie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L21/00C08L23/06C08L23/12C08K3/22C08K5/43C08K5/09C08K3/06
Inventor 李晓琛梁楚张丽娟李建新林百岑张永健王元光李明覃钰卓泽昌
Owner GUANGDONG PROVINCIAL ACAD OF BUILDING RES GRP CO LTD
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