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A kind of asphalt warm mix agent and its preparation method and application

A technology of warm mix agent and asphalt, which is applied in building insulation materials, climate change adaptation, building components, etc., can solve the problems of less development and research, restrict the popularization and application of types of warm mix agents, etc., and achieve easy availability of raw materials and great practical significance Effects of economy, reduction of surface tension and coefficient of friction

Active Publication Date: 2019-12-10
CHANGAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although road workers at home and abroad have conducted many research projects on this type of asphalt warm mix technology and achieved rich results, most of them are applied research, and there are few researches on the development of its key technology—surfactant-type warm mix agent products, which restricts The further popularization and application of this type of warm mix agent

Method used

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  • A kind of asphalt warm mix agent and its preparation method and application
  • A kind of asphalt warm mix agent and its preparation method and application
  • A kind of asphalt warm mix agent and its preparation method and application

Examples

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Effect test

Embodiment 1

[0023] The components and quality of asphalt warm mix agent are:

[0024]

[0025] The preparation method of asphalt warm mix agent of the present embodiment is divided into three steps:

[0026] The first step is that in a 500mL there-necked flask equipped with a stirrer, reflux condenser, water separator, and tail gas absorption device, the mixed acid of palmitic acid and oleic acid (palmitic acid and oleic acid mass ratio is 1:1), Xylene was sequentially added to the three-neck flask reactor.

[0027] The second step is to fill the three-necked flask with nitrogen, and under the protection of nitrogen, raise the temperature to 100°C. After the acid is completely melted, add triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine and a catalyst, and slowly raise the temperature to 155°C , Keep the temperature reaction for 4.5h.

[0028] The third step is to recover the xylene after the reaction is completely dehydrated to obtain a viscous liquid product, whi...

Embodiment 2

[0031] The components and quality of asphalt warm mix agent are:

[0032]

[0033] In this example, the fatty acid containing 16-18 carbons is palmitic acid. The catalyst is alumina.

[0034] Its preparation method is identical with embodiment 1.

Embodiment 3

[0036] The components and quality of asphalt warm mix agent are:

[0037]

[0038]

[0039] In this example, the fatty acid containing 16-18 carbons is oleic acid. The catalyst is sodium fluoride.

[0040] Its preparation method is identical with embodiment 1.

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Abstract

A warm asphalt mixing agent and its preparation method and application. The following components are weighed in terms of mass percentage: 30-49% of fatty acid containing 16-18 carbons, 20-30% of triethylenetetramine, 15% of tetraethylenepentamine ~25%, pentaethylenehexamine 5~20%, water-carrying agent 10-18%, catalyst 1-2%; add fatty acid containing 16-18 carbons and water-carrying agent into the reactor, heat to contain 16 After the ‑18 carbon fatty acid is melted, add triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine and a catalyst, keep warm at 140°C‑160°C for 4h‑6h, and dehydrate to obtain asphalt warm mix agent. The asphalt warm mix agent of the present invention does not contain water, is added by asphalt internal mixing, has the advantages of low addition amount, lowers the production and construction temperature of asphalt mixture after adding to 30°C to 40°C, is easy to obtain raw materials, and has low product cost. Achieve significant advantages such as energy saving and emission reduction in asphalt pavement construction and maintenance.

Description

technical field [0001] The invention belongs to the technical field of asphalt additives for road construction, in particular to an asphalt warm mix agent and its preparation method and application. Background technique [0002] Warm asphalt mixing technology first originated in Europe. In 1995, SHELL (Shell) and Kolo Veidekke (Norway) first jointly developed warm mix asphalt mixture (WMA); in 1997, the German Asphalt Forum, the first International Asphalt Pavement Conference in Sydney in 2000 and the second Barcelona in 2000 At the European Asphalt Conference, warm mix asphalt mixtures were publicized and introduced on a large scale, and there was a trend of accelerated development; in 2002, the National Asphalt Pavement Association (NAPA) inspected warm mix asphalt in Europe (mainly Germany and Norway) The mixture subsequently aroused great interest in the relevant departments of the US government and the industry. In 2004, NAPA, the US Federal Highway Administration (FH...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/20C08L95/00
CPCC08K5/20C08L95/00Y02A30/30
Inventor 延西利金晓晴
Owner CHANGAN UNIV
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