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Wide-scope modified asphalt and preparation method thereof

A modified asphalt, wide-area technology, applied in building components, building insulation materials, construction and other directions, can solve the problems of not fundamentally improved comprehensive performance, low high and low temperature bond strength indicators, etc., to achieve low-carbon production engineering, improve High temperature stability and high bond strength

Inactive Publication Date: 2011-02-16
河南金欧特实业集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (4) Use physical methods to realize the modification of asphalt by polymer, such as heating and stirring, shearing, colloid mill, etc. Although the physical modification method improves the performance of asphalt, the overall performance has not been fundamentally improved.
Especially wide-area modified asphalt, because traditional modified asphalt (JTG F40-2004) has low high and low temperature and bond strength indicators, and also has high temperature stability (index: softening point greater than 60°C) and low temperature flexibility ( Index: 5°C ductility greater than 150cm), high bond strength (0.6MPa), there is no modified asphalt that can be applied to actual construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of wide-area modified asphalt, (1) uses 91 grams of 130-140 ℃ hot asphalt as the main raw material; (2) uses 4 grams of powdered styrene-butadiene rubber as the first modifier; (3) 5 grams of polyethylene wax is used as the second modifier, and the above-mentioned components are mixed to prepare wide-area modified asphalt.

[0019] The preparation method of this wide-area modified asphalt is as follows:

[0020] 1) Add 4 grams of powdered styrene-butadiene rubber to 91 grams of hot asphalt at 130-140°C, and shear to make high-elongation modified asphalt;

[0021] 2) Add 5 grams of polyethylene wax into the high-extensibility modified asphalt, and stir to make wide-area modified asphalt.

Embodiment 2

[0023] A kind of wide area modified asphalt, (1) uses 95 grams of 130-140 ℃ hot asphalt as the main raw material; (2) uses 2 grams of powdered styrene-butadiene rubber as the first modifier; (3) Using 3 grams of polyethylene wax as the second modifier, the above-mentioned components are mixed to make wide-area modified asphalt.

[0024] The preparation method of this wide-area modified asphalt is as follows:

[0025] 1) Add 2 grams of powdered styrene-butadiene rubber to 95 grams of hot asphalt at 130-140°C, and shear to make high-elongation modified asphalt;

[0026] 2) Add 3 grams of polyethylene wax into the high-extensibility modified asphalt, and stir to make wide-area modified asphalt.

Embodiment 3

[0028] A wide range modified asphalt, (1) uses 92 grams of hot asphalt at 130-140 ° C as the main raw material; (2) uses 3.5 grams of powdered styrene-butadiene rubber as the first modifier; (3) Using 4.5 grams of polyethylene wax as the second modifier, the above-mentioned components are mixed to make wide-area modified asphalt.

[0029] The preparation method of this wide-area modified asphalt is as follows:

[0030] 1) Add 3.5 grams of powdered styrene-butadiene rubber to 92 grams of hot asphalt at 130-140°C, and shear to make high-elongation modified asphalt;

[0031] 2) Add 4.5 grams of polyethylene wax into the high-extensibility modified asphalt, and stir to make wide-area modified asphalt.

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Abstract

The invention relates to modified asphalt for road repairing and building, in particular to wide-scope modified asphalt and a preparation method thereof. The wide-scope modified asphalt is prepared by a method comprising the following steps: (1) taking 91-95 weight parts of hot asphalt at the temperature of 130-140DEG C as the main raw material; (2) taking 2-4 weight parts of powder butadiene styrene rubber as a first modifier; and (3) taking 3-5 weight parts of Tissuemat E as a second modifier, and mixing the components and preparing into the wide-scope modified asphalt. The wide-scope modified asphalt in the invention has high-temperature stability which is indicated by the softening point larger than 70DEG C and low temperature flexibility which is indicated by the ductility at 5DEG C larger than 150cm, as well as high bonding strength of 0.6MPa and simple production process, and is an asphalt product being convenient for application and dissemination.

Description

technical field [0001] The invention relates to a modified asphalt material for road construction, in particular to a wide-area modified asphalt and a preparation method thereof. Background technique [0002] In the past, the binder used for road paving mainly used straight asphalt for paving. However, as the traffic volume increases, the rutting marks and cracks caused by the flow are obvious. The measures taken for this are to use modified asphalt. As a complex polymer hydrocarbon, asphalt is The following performance is a typical elastic-viscosity-plasticity, and it will produce aging phenomenon under high temperature and ultraviolet radiation. Therefore, the main purpose of adding modifiers is to improve the road performance of asphalt mixture at high temperature, and improve its anti-rutting, anti-fatigue, anti-aging and anti-low temperature cracking performance. [0003] At present, there are many kinds of polymers used for asphalt modification in China, which can be...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L23/06C08L9/06
Inventor 周凯徐琦刘智昇郑伟喻慧温丽娜郭文献王洪成
Owner 河南金欧特实业集团股份有限公司
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