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Asphalt Additives for Warm Mix and Their Applications

An asphalt additive and warm mixing technology, which is applied in the field of petroleum asphalt warm mixing, can solve the problems of difficult modification of rubber powder, environmental pollution, and high energy consumption, and achieve the goal of improving thermal aging, overcoming environmental pollution, and reducing environmental pollution Effect

Active Publication Date: 2018-03-23
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of asphalt additive for warm mixing, which solves the problems of low ductility of warm mixing asphalt in the prior art, difficulty in modifying rubber powder, and poor storage stability. The present invention also provides its application, adding it When added to asphalt, it can effectively reduce the low-temperature ductility of asphalt and the temperature of mixing, paving, and rolling of the mixture, and overcome the problems of environmental pollution, high energy consumption, and aging of asphalt

Method used

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  • Asphalt Additives for Warm Mix and Their Applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Heat 100 parts of base asphalt to 130°C, add 2 parts of paraffin wax, 0.5 parts of stearic acid amide and 5 parts of styrene-butadiene rubber powder and stir at a constant temperature of 120°C for 20 minutes, then add 0.05 parts of plasticized sulfur and stir at 150°C for 1 hour. (wherein embodiment 1 used paraffin melting point 88 ℃, rubber powder particle size 10 orders, stearamide melting point 110 ℃)

Embodiment 2

[0029] Heat 100 parts of base asphalt to 132°C, add 2.5 parts of paraffin wax, 1.0 part of stearic acid amide and 6 parts of styrene-butadiene rubber powder and stir at a constant temperature of 110°C for 15 minutes, then add 0.15 parts of plasticized sulfur and stir at 140°C for 1.2 hours. (wherein embodiment 2 used paraffin melting point 85 ℃, rubber powder particle size 40 orders, stearamide melting point 105 ℃)

Embodiment 3

[0031] Heat 100 parts of base asphalt to 133°C, add 1 part of paraffin wax, 1.5 parts of stearic acid amide and 15 parts of styrene-butadiene rubber powder and stir at a constant temperature of 130°C for 20 minutes, then add 0.35 parts of plasticized sulfur and stir at 145°C for 0.8 hours. (wherein embodiment 3 used paraffin melting point 85 ℃, rubber powder particle size 50 orders, stearamide melting point 110 ℃)

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Abstract

The invention belongs to the field of petroleum asphalt warm-mixing technology and specifically relates to an asphalt additive for warm mixing. The asphalt additive is composed of the following raw materials (by weight): 1-7 parts of paraffin, 5-15 parts of rubber powder, 0.5-2.5 parts of amide and 0.05-1 part of plasticized sulphur. According to the invention, problems such as low ductility of warm mix asphalt, large modification difficulty of rubber powder, poor storage stability and the like in the prior art are solved. The invention also provides an application of the asphalt additive. By adding the asphalt additive into asphalt, low-temperature ductility of asphalt and blending, paving and rolling temperatures of the mixture can be reduced effectively, and problems of environmental pollution, high energy consumption, ageing and degeneration of asphalt and the like are overcome.

Description

technical field [0001] The invention belongs to the technical field of petroleum asphalt warm mixing, and in particular relates to an asphalt additive for warm mixing and its application. Background technique [0002] Asphalt pavement has the advantages of comfortable driving, low noise, fast construction speed and convenient maintenance. At present, the paving materials of asphalt pavement at home and abroad basically adopt traditional hot-mix asphalt mixture. The hot-mix asphalt process requires high temperature in the process of mixing, transportation and paving, which not only consumes a lot of energy, but also aggravates the aging of asphalt. , and a large amount of smoke and waste gas will be generated during production and construction, which will endanger the health of construction workers, pollute the environment, and increase the greenhouse effect. [0003] How to overcome its existing problems while retaining the good performance of hot mix asphalt mixture has be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L9/06C08K13/02C08K5/01C08K3/06C08K5/20
CPCY02A30/30
Inventor 马鹏程高淑美许金山刘爱华贾丽凤毛冬梅
Owner CHINA PETROLEUM & CHEM CORP
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