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A kind of asphalt additive, asphalt composition containing the additive and its preparation method

An asphalt additive and asphalt composition technology, which is applied in the field of asphalt additives, can solve the problems of low temperature modulus rise of asphalt binder, difficult to obtain, complex structure of the second additive, etc., achieve no three waste discharge, improve penetration index, Conditioning effect

Active Publication Date: 2019-06-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second additive in this method has a complex structure and is not easy to obtain
Moreover, the addition of this gelling compound causes an increase in the low temperature modulus of the asphalt binder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add castor oil and triethanolamine into the reactor at a weight ratio of 80:20, and react under normal pressure stirring conditions, wherein the reaction temperature is 110°C, and react for 60 minutes to obtain asphalt additive A.

[0029] Heat 1000g of No. 70 asphalt in Table 1 to 145°C, add 30g of asphalt additive A, start the agitator (150rpm), stir for 30min, and analyze the properties, see Table 2.

Embodiment 2

[0031] Add castor oil and monoethanolamine into the reactor at a weight ratio of 85:15, and react under normal pressure stirring conditions, wherein the reaction temperature is 120°C, and react for 40 minutes to obtain asphalt additive B.

[0032] The specific preparation method of the asphalt composition is the same as in Example 1, except that the asphalt additive A is changed to asphalt additive B, and the amount of additive B added is changed to 60 g.

Embodiment 3

[0034] Add castor oil and monoethanolamine into the reactor at a weight ratio of 90:10, and react under normal pressure stirring conditions, wherein the reaction temperature is 140°C, and react for 30 minutes to obtain asphalt additive C.

[0035] The specific preparation method of the asphalt composition is the same as in Example 1, except that the asphalt additive A is changed to asphalt additive C, and the amount of additive C is changed to 80 g.

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PUM

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Abstract

The present invention discloses an asphalt additive, and an asphalt composition containing the asphalt additive, and a production method thereof, wherein the asphalt additive comprises 75-95 wt% of castor oil and 5-25 wt% of ethanolamine. According to the present invention, after the asphalt is added to the matrix asphalt, the penetration degree index of the road asphalt can be well improved; and the method has advantages of simple process, easy implementation, and favorable wide application.

Description

technical field [0001] The invention relates to an asphalt additive, an asphalt composition containing the additive and a preparation method thereof, in particular to an additive for improving the performance of road asphalt and a method for preparing the asphalt composition. Background technique [0002] In 2004, according to the development of road asphalt standards, the Ministry of Communications of China released the new "Technical Specifications for Construction of Highway Asphalt Pavement" (JTG F40-2014), which was implemented in 2005. This specification divides road asphalt into three grades: A, B and C, and grade A is the highest grade, which is suitable for all road surface projects. In this grading system, the penetration index (PI value) is one of the important grading indicators. The standard requirement for PI value of grade A asphalt is -1.5~+1.0, grade B is -1.8~+1.0, grade C is not do request. [0003] Penetration index refers to the degree of change of bit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L91/00C08L23/20C08K5/17C11C3/00
Inventor 刘树华姚汉荣
Owner CHINA PETROLEUM & CHEM CORP
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