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Asphalt modifier and industrial production method and application thereof

An asphalt modifier and modifier technology, applied in the field of asphalt modifiers, can solve problems such as inability to be widely promoted and affect the atmospheric environment, and achieve the effects of improving structural stability and fire resistance, low input cost, and promoting bonding

Active Publication Date: 2014-11-19
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, because the currently widely used sulfur sulfur asphalt modifier SAEM has a sulfur content of 99.7%, an ash content of 0.032%, and an appearance of soot black solid particles, although its safety has been greatly improved compared to sulfur, it is still a flammable solid.
In actual use, due to the insufficiency of SEAM itself and the rough mixing operation, a large amount of H was generated when adding asphalt modification 2 S and SO 2 Gas, which seriously affects the atmospheric environment, making this product unable to be widely promoted in China

Method used

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  • Asphalt modifier and industrial production method and application thereof
  • Asphalt modifier and industrial production method and application thereof
  • Asphalt modifier and industrial production method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] In this example, the prepared asphalt modifier is uniformly mixed with modified sulfur and red mud particles, the particle size of the red mud particles is ≤0.1mm and its weight is 200g; Modified sulfur prepared by adding olefin modifiers and sulfur modification additives in the medium, the mass purity of the sulfur is above 99% and its weight is 1000g, and the olefin modifiers are dimerized Cyclopentadiene and its addition amount is 40g, and described sulfur modification addition is nanoscale FeCl 2 particles, the nanoscale FeCl 2 The weight of the granules is 70 g.

[0074] In the present embodiment, when asphalt modifier is produced, comprise the following steps:

[0075] Step 1, preparation of modified sulfur, the process is as follows:

[0076] Step 101, sulfur melting: according to the designed ratio, add the olefin modifier and the sulfur modification additive to the sulfur and stir evenly to obtain a sulfur mixture; then use heating equipment to heat the sulf...

Embodiment 2

[0108] In this embodiment, the asphalt modifier produced is the same as that in Embodiment 1.

[0109] In this embodiment, the industrial production method of the asphalt modifier used is the same as that in Embodiment 1.

[0110] In this embodiment, when applying the asphalt modifier produced, the difference from Example 1 is that when mixing in step II, after the preheated asphalt modifier and mineral aggregate are mixed uniformly, Obtain an intermediate mixture; then add the preheated base asphalt into the intermediate mixture and mix evenly to obtain modified asphalt concrete. When mixing the asphalt modifier and mineral aggregate, the temperature of the mixture composed of the asphalt modifier and mineral aggregate is lower than 150°C; when adding the preheated base asphalt into the intermediate mixture for mixing , the temperature of the mixture composed of the preheated base asphalt and the intermediate mixture is lower than 150°C.

[0111] In this embodiment, when th...

Embodiment 3

[0149] In this example, the prepared bitumen modifier is different from Example 1 in that: the weight of the red mud particles is 150g; the olefin modifier is low-density polyethylene and its addition amount is 30g, so The sulfur modified additive is nano CuSO 4 particles, the nanoscale CuSO 4 The weight of the granules is 60 g.

[0150] During actual preparation, the olefin modifier may be one or both of low-density polyethylene, hot-melt polyurethane, dicyclopentadiene and cyclopentadiene.

[0151] In this example, the remaining components and proportions of the prepared asphalt modifier are the same as those in Example 1.

[0152] In this example, the production method of the asphalt modifier is different from Example 1 in that: when sulfur is melted in step 101, heating equipment is used to heat the sulfur mixture at a temperature of 135°C until Heat the sulfur to a molten state; when performing sulfur modification in step 102, use the heating equipment and continue hea...

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Abstract

The invention discloses an asphalt modifier and an industrial production method and application thereof. The asphalt modifier is prepared by uniformly mixing modified sulfur and red mud particles. The industrial production method comprises the following steps: 1, preparing the modified sulfur, namely performing sulfur fusion and sulfur modification; and 2, adding the red mud particles. In the industrial production method, the modified sulfur is prepared in a way that an olefin modifier and a sulfur modification additive are added into sulfur for modifying sulfur; a weight ratio of the olefin modifier to sulfur is 2-6:100, and a weight ratio of the red mud particles to the sulfur is 10-30:100. The application process of the asphalt modifier comprises the following steps: I, preheating raw materials; and II, mixing, namely mixing the preheated asphalt modifier, mineral aggregate and matrix asphalt. The asphalt modifier adopted in the production method is simple in production process, low in construction cost, incombustible, safe to use and excellent in performance, the amount of discharged atmospheric pollutants in the production and application process is small, comprehensive performance of the modified asphalt concrete is excellent, and industrial waste red mud can be effectively utilized.

Description

technical field [0001] The invention belongs to the technical field of road materials, and in particular relates to an asphalt modifier and its industrial production method and application. Background technique [0002] The axle load, large flow rate and high tire pressure of modern highway traffic put forward higher requirements for the quality of the road surface. And high-quality asphalt is the key to ensure good pavement performance. Due to the increasing shortage of high-quality oil sources, especially since the oil crisis in the 1970s, the price of oil has risen sharply, and the supply has become increasingly tight. In recent years, the situation in the Middle East and North Africa has continued to be turbulent, leading to an unprecedented crisis in world oil production and further exacerbating the shortage of bitumen. According to the forecast of the 4th China Asphalt Conference in 2006, the consumption of asphalt mixture in my country in 2006 was about 150 million ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/02C04B26/26
Inventor 孟昭代军赵世龙杨云
Owner XIAN UNIV OF SCI & TECH
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