Warm-mixing agent used for waste-rubber-powder-modified asphalt, and preparation method thereof

A technology of modified asphalt and warm mix agent, which is applied in the direction of climate change adaptation, etc., which can solve the problems of water bubbles, lower low-temperature performance, and dependence on network chain structure, etc., and achieve excellent viscosity reduction effect and simple and easy operation

Active Publication Date: 2013-03-20
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned several traditional warm mix agents are widely used in reducing the viscosity of base asphalt and improving certain properties, but there are the following disadvantages when applied to waste rubber powder modified asphalt: First, the superior performance of waste rubber powder modified asphalt , mainly depends on the residual network chain structure of waste rubber powder
The traditional warm mix agent will interact with the waste rubber powder after being added, which will inevitably damage the network chain stru

Method used

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  • Warm-mixing agent used for waste-rubber-powder-modified asphalt, and preparation method thereof
  • Warm-mixing agent used for waste-rubber-powder-modified asphalt, and preparation method thereof
  • Warm-mixing agent used for waste-rubber-powder-modified asphalt, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] With 50 mass parts of ethylene bisoleic acid amide, 30 mass parts of diphenyl carbonate, 30 mass parts of oleic acid amide, 15 mass parts of oleic acid, aromatic oil (Zibo Taichang Lubricating Oil Co., Ltd., the following examples all adopt the same Aromatic oil) 5 parts by mass are preliminarily mixed to make it macroscopically uniform. Then, the primary mixture was put into a reactor (volume 5L, the same reactor was used in the following examples) for reaction and mixing, the stirring speed was 50r / min, and the treatment time was 15 minutes at 140°C, and cooled to room temperature. Get warm mix.

[0023] Add warm mix agent and modified asphalt to the modified asphalt prepared in Comparative Example 1 at a mass ratio of 1:50, and stir with a high-speed mixer at 160°C for 15 minutes at a stirring speed of 300r / min. The resulting viscosity is shown in Table 1, and other performance indicators are shown in Table 2.

Embodiment 2

[0025] 50 parts by mass of ethylene bis stearic acid amide, 30 parts by mass of glyceryl monostearate, 30 parts by mass of oleic acid amide, 15 parts by mass of oleic acid and 5 parts by mass of aromatic oil are preliminarily mixed to achieve macroscopic uniformity. Then, put the primary mixture into the reaction kettle for reaction and mixing, the stirring speed is 50r / min, the treatment time is 15 minutes at 140°C, and cooled to room temperature to prepare the warm mixing agent.

[0026] Add warm mix agent and modified asphalt to the modified asphalt prepared in Comparative Example 1 at a mass ratio of 1:50, and stir with a high-speed mixer at 160°C for 15 minutes at a stirring speed of 300r / min. The resulting viscosity is shown in Table 1, and other performance indicators are shown in Table 2.

Embodiment 3

[0028] Preliminarily mix 50 parts by mass of ethylene bisoleamide, 30 parts by mass of glyceryl behenate, 30 parts by mass of erucamide, 15 parts by mass of oleic acid, and 5 parts by mass of aromatic oil to achieve macroscopic uniformity. Then, put the primary mixture into the reaction kettle for reaction and mixing, the stirring speed is 50r / min, the treatment time is 15 minutes at 140°C, and cooled to room temperature to prepare the warm mixing agent.

[0029] Add warm mix agent and modified asphalt to the modified asphalt prepared in Comparative Example 1 at a mass ratio of 1:50, and stir with a high-speed mixer at 160°C for 15 minutes at a stirring speed of 300r / min. The resulting viscosity is shown in Table 1, and other performance indicators are shown in Table 2.

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Abstract

The invention relates to a warm-mixing agent used for waste-rubber-powder-modified asphalt, and a preparation method thereof. According to the invention, through the compounding of the components such as an ethylene-structure-containing substance with a melting point within a range of 100-150 DEG C, an ester with a melting point within a range of 50-100 DEG C, monoamide with a melting point within a range of 50-100 DEG C, oleic acid, aromatic oil, and the like, the viscosity of waste-rubber-powder-modified asphalt is greatly reduced, such that warm-mixing requirements are achieved. Also, performances such as low-temperature ductility, high-temperature softening point, and the like of the modified asphalt are improved by a certain extent.

Description

Technical field: [0001] The invention relates to a warm mix agent for waste rubber powder modified asphalt and a preparation method thereof. Background technique: [0002] Warm mix asphalt technology is a type of asphalt mixing whose mixing temperature is between hot mix asphalt technology (150-180°C) and cold mix asphalt technology (10-40°C), and the performance reaches (or is close to) hot mix asphalt mixture Energy-saving new technology. Usually, the most common implementation method of warm mix technology is to add warm mix agent. Compared with standard hot mix asphalt technology, the temperature of warm mix asphalt technology can be reduced by 20°C to 30°C. Warm mix asphalt technology has many advantages: Firstly, the production and construction temperature of asphalt mixture can be reduced, which can save energy consumption by more than 20%. At the same time, the storage temperature of asphalt mixture is lowered, and the fluidity at lower temperature is enhanced. Sec...

Claims

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Application Information

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IPC IPC(8): C04B24/12
CPCY02A30/30
Inventor 李晓林樊杰张立群袁滨郑广宇杜丹超
Owner BEIJING UNIV OF CHEM TECH
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