Warm mix asphalt mixture and preparation method thereof

A warm-mix asphalt and mixture technology, applied in the field of petroleum asphalt, can solve the problems of high energy consumption, reduction of mixture mixing, paving, rolling temperature, environmental pollution, etc., to increase the thickness of the oil film, improve the mechanical properties, and prepare The effect of simple method

Active Publication Date: 2021-08-10
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a warm asphalt mixture that effectively reduces the mixing, paving and rolling temperature of the mixture, overcomes the problems of environmental pollution, high energy consumption, aging and decay of asphalt, and good stability; the present invention also provides its Preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Heat 100 parts of base asphalt to a molten state, add 2 parts of paraffin, 3 parts of stearic acid, and 2.5 parts of low-density polyethylene, and stir at a constant temperature of 145°C for 20 minutes to prepare warm mix asphalt.

[0026] Put 95 parts of mineral material at 140°C into the mixing tank, add 5 parts of warm mix asphalt at 130°C, add 1.5 parts of aromatic oil and 0.3 parts of polypropylene fiber, and mix for 25 seconds to prepare warm mix asphalt mixture.

Embodiment 2

[0028] Heat 100 parts of base asphalt to a molten state, add 1.5 parts of paraffin wax, 2 parts of stearic acid, and 2 parts of low-density polyethylene, and stir at a constant temperature of 155 ° C for 20 minutes to prepare warm mix asphalt.

[0029] Put 95 parts of mineral material at 140 °C into the mixing tank, add 5 parts of warm mix asphalt at 130 °C, add 1 part of catalytic cracking oil slurry, 0.6 part of polypropylene fiber, and mix for 20 seconds to prepare warm mix asphalt mixture.

Embodiment 3

[0031] Heat 100 parts of base asphalt to a molten state, add 1 part of oxidized polyethylene wax, 1 part of stearic acid, and 0.5 part of low-density polyethylene, and stir at a constant temperature of 145 ° C for 20 minutes to prepare warm mix asphalt.

[0032] Put 95 parts of mineral material at 145°C into the mixing tank, add 5 parts of warm-mix asphalt at 135°C, add 0.5 part of aromatic oil and 0.05 part of polyester fiber, and mix for 20 seconds to prepare warm-mix asphalt mixture.

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Abstract

The invention belongs to the technical field of petroleum asphalt, and in particular relates to a warm asphalt mixture and a preparation method thereof. The warm-mix asphalt mixture of the present invention is made of the following raw materials in parts by mass: 95 parts of mineral material, 5 parts of warm-mix asphalt, 0.5-2 parts of viscosity-reducing lubricant and 0.05-1 part of fiber. The fiber and the viscosity-reducing lubricant added in the invention swell in the asphalt during wet mixing and transportation to form a gel layer, thereby improving the elastic recovery function and mechanical properties of the asphalt pavement. Fiber exists in three-dimensional dispersed phase in asphalt mixture, just like the steel bar in concrete plays a reinforcing role, and because the oil film thickness is increased, it can effectively avoid oil flooding and rutting on the road surface. The preparation method of the invention is simple and easy to implement.

Description

technical field [0001] The invention belongs to the technical field of petroleum asphalt, and in particular relates to a warm asphalt mixture and a preparation method thereof. Background technique [0002] Traditional hot-mix asphalt mixtures have defects such as high mixing and paving temperatures, high emissions of harmful gases, and easy aging of asphalt mixtures, which have caused many ecological and environmental problems. The warm mix asphalt mixture technology has greatly reduced the energy consumption and smoke emission in the production and construction process due to the lower paving and mixing temperature, and improved the ecological value. [0003] At present, there are three main methods of warm mix asphalt mixture technology: (1) organic viscosity-reducing warm mix technology, which uses organic viscosity-reducing agents to reduce the viscosity of hot asphalt mixing, mainly waxes or esters. The warm mixing technology does not need to modify the original mixing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B24/085C04B24/36C04B24/2611C04B18/12C04B24/08C04B16/0633C04B24/281C04B16/0683Y02A30/30
Inventor 马鹏程高淑美贾丽凤许金山刘爱华毛冬梅
Owner CHINA PETROLEUM & CHEM CORP
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