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Lake asphalt and biological asphalt compounded modified asphalt and preparation method thereof

A bio-asphalt and modified asphalt technology, applied in building structures, building components, building thermal insulation materials, etc., can solve the problems of low viscosity, low softening point of bio-asphalt, high temperature stability defects, etc. Excellent effect on fatigue and modification effect

Inactive Publication Date: 2018-05-18
中冶南方城市建设工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, bio-asphalt has low softening point and low viscosity, and has technical defects in high temperature stability.

Method used

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  • Lake asphalt and biological asphalt compounded modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A lake asphalt compound bio-asphalt modified asphalt, the components of which are calculated in parts by weight: 80 parts of base asphalt, 10 parts of bio-asphalt, and 10 parts of lake asphalt. The selected lake asphalt is Trinidad lake asphalt, and the bio-asphalt is soybean oil bio-asphalt.

[0032] The soybean oil bio-asphalt used in this example and other examples below is a commercially available product, purchased from Suzhou Fuzhiyuan Biotechnology Co., Ltd.

[0033] The preparation method of the lake asphalt compound biological asphalt modified asphalt is as follows:

[0034] (1) Put the massive lake asphalt into a pulverizer to pulverize it, and then sieve it through a 100-mesh sieve disc to prepare a lake asphalt modifier.

[0035] (2) Heating the bio-asphalt in a water bath and shearing at a speed of 3500r / min for 30min to prepare the bio-asphalt modifier.

[0036] (3) Mix the lake asphalt modifier, bio-asphalt modifier and base asphalt according to the pre...

Embodiment 2

[0039] A lake asphalt compound bio-asphalt modified asphalt, the components of which are calculated by weight: 70 parts of base asphalt, 15 parts of bio-asphalt, and 15 parts of lake asphalt. The selected lake asphalt is Trinidad lake asphalt, and the bio-asphalt is soybean oil bio-asphalt.

[0040] The preparation method of the lake asphalt compound biological asphalt modified asphalt is as follows:

[0041] (1) Add the massive lake asphalt into a pulverizer to pulverize it, and then sieve it through a 120-mesh sieve disc to prepare a lake asphalt modifier.

[0042] (2) Heating the bio-asphalt in a water bath and shearing at a speed of 4000r / min for 40min to prepare the bio-asphalt modifier.

[0043] (3) Mix lake asphalt modifier, biological asphalt modifier and base asphalt according to the predetermined blending ratio at 180°C, then put them in an oven at 180°C, and take them out after 60 minutes of development.

[0044] (4) The mixture obtained in step (3) was sheared fo...

Embodiment 3

[0046] A lake asphalt compound bio-asphalt modified asphalt, the components of which are calculated by weight: 60 parts of base asphalt, 20 parts of bio-asphalt, and 20 parts of lake asphalt. The selected lake asphalt is Trinidad lake asphalt, and the bio-asphalt is soybean oil bio-asphalt.

[0047] The preparation method of the lake asphalt compound biological asphalt modified asphalt is as follows:

[0048] (1) Put the massive lake asphalt into a pulverizer to pulverize it, and then sieve it through a 140-mesh sieve disc to prepare a lake asphalt modifier.

[0049] (2) Heating the bio-asphalt in a water bath and shearing at a speed of 4500r / min for 50min to prepare a bio-asphalt modifier.

[0050] (3) Mix the lake asphalt modifier, bio-asphalt modifier and base asphalt according to the predetermined blending ratio at 185°C, then put it in an oven at 185°C, and take it out after 70 minutes of development.

[0051] (4) The mixture obtained in step (3) was sheared for 70 minu...

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Abstract

The invention provides lake asphalt and biological asphalt compounded modified asphalt. The lake asphalt and biological asphalt compounded modified asphalt is prepared from, by weight, 50-80 parts ofmatrix asphalt, 10-25 parts of biological asphalt and 10-25 parts of lake asphalt. The invention further provides a preparation method of the lake asphalt and biological asphalt compounded modified asphalt. The lake asphalt and the biological asphalt serve as modifiers to modify the matrix asphalt, the fatigue resistance and the low-temperature cracking resistance of the matrix petroleum asphalt are improved through mixing of the biological asphalt, the reduced high temperature performance caused by mixing of the biological asphalt is improved through mixing of the lake asphalt, and thereforethe high temperature performance, the low temperature performance and the durability of the matrix asphalt are comprehensively improved. The modified asphalt is prominent in performance, and has a good technical and economic prospect. The preparation method of the lake asphalt and biological asphalt compounded modified asphalt is simple, easy to carry out and convenient to popularize.

Description

technical field [0001] The invention relates to the technical field of modified asphalt, in particular to a lake asphalt compound biological asphalt modified asphalt and a preparation method thereof. Background technique [0002] With the rapid development of highway construction in our country, asphalt pavement has been widely used nationwide due to its superior performance, and the consumption of asphalt has increased significantly in recent years. At present, most road asphalt is petroleum asphalt extracted from crude oil. However, petroleum is a non-renewable and scarce resource. Due to over-exploitation and use, petroleum resources are becoming increasingly exhausted. Therefore, it is urgent to find a renewable material with excellent road performance to reduce the dependence on petroleum resources in the production and utilization of asphalt. [0003] Bio-asphalt is a kind of material similar to petroleum asphalt, which has the properties of cementitious materials aft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/00
Inventor 赵宇程小亮王阳王瑞金
Owner 中冶南方城市建设工程技术有限公司