Warm mix asphalt additive, warm mix asphalt, preparation method and application

A technology of warm mix asphalt and additives, which is applied in the field of warm mix asphalt additives, warm mix asphalt and warm mix asphalt mixture and its preparation. The risk of damage and low-temperature cracking, the simple preparation process, and the effect of energy saving and emission reduction cost

Inactive Publication Date: 2017-09-15
上海龙孚材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem mainly solved by the present invention is to overcome the defects of high production cost, high energy consumption, limited types, unsatisfactory effect and complicated preparation process of warm mix agent existing in the existing warm mix technology, and provide a warm mix asphalt additive, warm mix Asphalt, warm asphalt mixture and its preparation

Method used

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  • Warm mix asphalt additive, warm mix asphalt, preparation method and application
  • Warm mix asphalt additive, warm mix asphalt, preparation method and application
  • Warm mix asphalt additive, warm mix asphalt, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Preparation of warm-mix asphalt additive: Weigh oleic acid and triethylenetetramine to react, the reaction is a conventional reaction in the field, specifically as follows: oleic acid and triethylenetetramine are mixed in a molar ratio of 1:1 and heated to 260°C , and nitrogen dehydration to obtain fatty imidazoline-based polyamine compound 1A. Take 150g of the reaction product and put it into a 1000mL three-neck flask, heat it up to 40°C with stirring, then add 275g of ethylene oxide adduct ETHODUOMEEN T / 25 of tallow propylenediamine, and finally add 75g of polyethylene Based polyamine ECA-29, stirred for 1 hour to obtain the product, Warm Mix Asphalt Additive 2A.

[0053]

[0054] Preparation of warm-mix asphalt: Take warm-mix asphalt additive 2A with an asphalt quality of 5‰, add it to molten 70# petroleum asphalt, heat to 135°C and stir for 20 minutes to obtain warm-mix asphalt.

[0055] Preparation of warm-mix asphalt mixture: heat the obtained warm-mix asphalt...

Embodiment 2

[0058] Preparation of warm-mix asphalt additive: Weigh oleic acid and tetraethylenepentamine to react, the reaction is a conventional reaction in the field, specifically as follows: mix oleic acid and tetraethylenepentamine in a molar ratio of 1:1, and heat to 180°C , and nitrogen dehydration to obtain fatty amidopolyamine compound 1B. Get reaction product 350g and add in the three-neck flask of 1000mL, be heated to 40 ℃ with stirring, then add the ethylene oxide adduct Rhodoval CR-214 of the tallow propylenediamine of 100g (purchased from France Solvay company), Finally, 50 g of tetraethylenepentamine (purchased from Tosoh Corporation, Japan) was added and stirred for 1 h to obtain the product, Warm Mix Asphalt Additive 2B.

[0059]

[0060] Preparation of warm-mix asphalt: Take warm-mix asphalt additive 2B with an asphalt quality of 5‰, add it to molten 70# petroleum asphalt, heat to 135°C and stir for 20 minutes to obtain warm-mix asphalt.

[0061] Preparation of warm-m...

Embodiment 3

[0064] Preparation of warm-mix asphalt additive: Weigh oleic acid and tetraethylenepentamine to react, the reaction is a conventional reaction in the field, specifically as follows, oleic acid and tetraethylenepentamine are mixed in a molar ratio of 1:1, heated to 260°C, The fatty imidazoline-based polyamine compound 1C was obtained by dehydration under nitrogen gas. Get reaction product 300g and add in the three-necked flask of 1000mL, be accompanied by stirring to 35 ℃, then add the ethylene oxide adduct Rhodoval CR-215 of the tallow propylenediamine of 125g (from France Solvay company), finally add 75g of tetraethylenepentamine (from Japan Tosoh Corporation), stirred for 1 hour to obtain the product Warm Mix Asphalt Additive 2C.

[0065]

[0066]Preparation of warm-mix asphalt: Add warm-mix asphalt additive 2C, which accounts for 4‰ of asphalt mass, into molten 70# petroleum asphalt, heat to 135°C and stir for 20 minutes to obtain warm-mix asphalt.

[0067] Preparation ...

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Abstract

The invention discloses a warm mix asphalt additive, warm mix asphalt, warm mix asphalt mixture, a preparation method and an application. The warm mix asphalt additive comprises 30%-70% of fatty acid amide polyamine or fatty imidazoline polyamine, 20%-55% of aliphatic polyamine ethylene oxide adducts and 10%-15% of vinyl-amine, and the percent is weight percent relative to the total weight of the warm mix asphalt additive. The warm mix asphalt additive can be directly added into the asphalt to prepare the anhydrous warm mix asphalt, the working temperature of the asphalt mixture is effectively reduced, and the warm mix asphalt additive is applicable to different asphalt mixture types. Compared with hot-mixed asphalt mixture of the same type, the temperature can be reduced by 20-50 DEG C, the warm mix asphalt mixture has the advantages of simple process, energy conservation, environmental protection, low cost and the like, the moisture damage resistance of the warm mix asphalt is improved, and the service life of a road is prolonged.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to a warm-mix asphalt additive, warm-mix asphalt and warm-mix asphalt mixture, a preparation method and an application. Background technique [0002] At present, there are two main types of asphalt mixtures used for asphalt pavement construction and maintenance: hot mix asphalt mixture and cold mix (normal temperature) asphalt mixture. Hot mix asphalt mixture refers to the mixture of asphalt and mineral aggregates mixed at high temperature (150°C-185°C); cold mix (normal temperature) asphalt mixture refers to emulsified asphalt or diluted asphalt and aggregates at normal temperature ( 10°C-40°C) Mixed and paved mixture. Hot mix asphalt mixture is the most used, but the problems of harmful gas emissions, excessive energy consumption and thermal aging in the process of mixing, transportation and paving are more prominent; while cold mix asphalt mixture, despite its environme...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08K5/3445C08K5/17C08K5/20C04B24/12C04B24/32
CPCC04B40/0039C08K5/17C08K5/20C08K5/3445C08K2201/014C08L95/00C08L53/02C04B24/124C04B24/128C04B24/32C04B26/26Y02A30/30
Inventor 韩开震陈婷婷
Owner 上海龙孚材料技术有限公司
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