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Environment-friendly hot mix plant recycled asphalt mixture and preparation method thereof

An asphalt mixture, an environmentally friendly technology, applied in the field of asphalt concrete, can solve the problems of cracking, rutting, affecting the service life of asphalt pavement, poor waterproof ability, etc. Effect

Inactive Publication Date: 2021-09-07
上海繁荣道路建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned environmentally friendly asphalt mixture can meet the minimum standards for engineering use, its water resistance is generally poor. During long-term use, it is prone to cracking and rutting due to water accumulation, which seriously affects the use of asphalt pavement. life

Method used

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  • Environment-friendly hot mix plant recycled asphalt mixture and preparation method thereof
  • Environment-friendly hot mix plant recycled asphalt mixture and preparation method thereof
  • Environment-friendly hot mix plant recycled asphalt mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0053] A kind of modified asphalt, its preparation steps are as follows:

[0054] a. First, heat the asphalt and the modified liquid at a weight ratio of 1:0.2 to 220°C under negative pressure and vacuum, then stir and mix at a speed of 2000r / min for 30 minutes to prepare the asphalt mixture, and keep it warm for later use;

[0055] The modification liquid is composed of hydrogenated terpene resin, phenolic resin and o-cresol novolac epoxy resin in a weight ratio of 1:0.25:2.

[0056]b. Then heat the asphalt mixture, filler and dispersant at a weight ratio of 1:0.1:0.01 to 200°C under negative pressure and vacuum, then stir and mix for 30 minutes at a speed of 1500r / min to obtain modified asphalt , heat preservation spare;

[0057] The dispersant is paraffin, purchased from Jining Sanshi Biotechnology Co., Ltd.;

[0058] The filler is lignin fiber, purchased from Shandong Senhong Engineering Materials Co., Ltd.

preparation example 2

[0060] A modified asphalt, the difference from Preparation Example 1 is that the modified liquid is composed of hydrogenated terpene resin, phenolic resin and o-cresol novolac epoxy resin in a weight ratio of 1:0.5:3.

preparation example 3

[0062] A modified asphalt, the difference from Preparation Example 1 is that the modified liquid is composed of hydrogenated terpene resin, phenolic resin and o-cresol novolac epoxy resin in a weight ratio of 1:0.75:4.

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Abstract

The invention relates to an environment-friendly hot mix plant recycled asphalt mixture and a preparation method thereof. The environment-friendly hot mix plant recycled asphalt mixture consists of the following components in parts by weight: 1500-2000 parts of aggregate; 300-500 parts of a recycled asphalt material; 200-250 parts of mineral powder; 3-5 parts of an anti-stripping agent; 120-150 parts of modified asphalt; the modified asphalt is prepared by the following steps: a, heating and mixing asphalt and modified liquid in vacuum to prepare asphalt mixed liquid, and preserving heat for later use; b, heating and mixing the asphalt mixed solution, a filler and a dispersing agent in vacuum to prepare modified asphalt, and preserving heat for later use; the modified liquid is composed of hydrogenated terpene resin, phenolic resin and o-cresol formaldehyde epoxy resin. The asphalt mixture has the advantages of being green, environment-friendly, waterproof and crack-resistant.

Description

technical field [0001] The application relates to the technical field of asphalt concrete, more specifically, it relates to an environment-friendly factory-mixed heat-recycled asphalt mixture and a preparation method thereof. Background technique [0002] Asphalt concrete is a mixture of artificially selected aggregates and road asphalt under a certain ratio. With the advancement of urbanization road construction, this kind of mixture is widely used due to its excellent characteristics. Moreover, with the continuous iteration of road construction, a large number of waste asphalt pavement materials are produced, and environmentally friendly asphalt mixtures for recycling waste asphalt pavement materials have also emerged as the times require. [0003] The environment-friendly asphalt mixture in the related art is composed of aggregate, mineral powder, asphalt and recycled asphalt material mixed under certain conditions. Among them, the recycled asphalt material is the aspha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B111/27C04B111/34
CPCC04B26/26C04B2201/50C04B2111/343C04B2111/0075C04B2111/27C04B18/141C04B24/288C04B24/2623C04B18/16C04B24/302C04B24/281C04B24/26C04B24/38C04B24/36C04B14/02C04B18/26
Inventor 张利娅陈燕蔡红梅王本财
Owner 上海繁荣道路建设工程有限公司
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