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Modified biological asphalt material, preparation method thereof and application of material

A bio-asphalt and modified technology, applied in building insulation materials, building structures, building components, etc., can solve the problems of general bearing capacity and limited high temperature rutting resistance, achieve good bearing capacity, improve high temperature stability, and improve Effects of softening point and viscosity

Inactive Publication Date: 2019-05-10
NANJING COMM INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of general bearing capacity and limited high-temperature anti-rutting ability of bio-asphalt materials in the prior art, thereby providing a modified bio-asphalt material; at the same time, the present invention also provides the Describe the preparation method and application of modified bio-asphalt material

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  • Modified biological asphalt material, preparation method thereof and application of material
  • Modified biological asphalt material, preparation method thereof and application of material

Examples

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Effect test

Embodiment 1

[0028] This embodiment provides a modified asphalt material, including: 58g of bio-asphalt, 12g of 70-mesh rubber, 2g of sulfur, 18g of glycerin, and 0.4g of chopped mineral fiber. The method for preparing the modified asphalt material by using the above-mentioned raw materials comprises the following steps:

[0029] (1) Grind and stir 58g of bio-asphalt and 12g of 70-mesh rubber at 110°C for 15 minutes to obtain mixture A 1 ;

[0030] (2) the mixture A 1 Mix with 2g of sulfur and 18g of glycerin at 160°C for 15 minutes, then add 0.4g of chopped mineral fiber and stir for 8 minutes to obtain mixture B 1 ;

[0031] (3) mix mixture B 1 Stirring at 160° C. for 70 minutes at a stirring speed of 500 r / min.

[0032] The chopped mineral fibers used in this example are basalt fibers with a length of 6 mm.

Embodiment 2

[0034] This embodiment provides a modified asphalt material, including: 30g of bio-asphalt, 10g of 100-mesh resin, 3g of polyvinyl alcohol, 25g of rubber oil, and 0.6g of mineral wool fiber.

[0035] The method for preparing the modified asphalt material by using the above-mentioned raw materials comprises the following steps:

[0036] (1) Grind and stir 30g of bio-asphalt and 10g of 100-mesh resin at 120°C for 10 minutes to obtain mixture A 2 ;

[0037] (2) the mixture A 2 Mix with 3g of polyvinyl alcohol and 25g of rubber oil at 180°C for 10 minutes, then add 0.6g of mineral wool fiber and stir for 10 minutes to obtain mixture B 2 ;

[0038] (3) mix mixture B 2 Stirring at 140° C. for 80 minutes at a stirring speed of 600 r / min to obtain the obtained product.

[0039] The mineral wool fibers used in this embodiment are basalt fibers with a length of 4-8 mm.

Embodiment 3

[0041] This embodiment provides a modified asphalt material, including: 78g of bio-asphalt, 15g of 40-mesh thermoplastic elastomer, 1g of polyvinyl alcohol, 10g of pine oil, and 0.2g of chopped mineral fiber.

[0042] The method for preparing the modified asphalt material by using the above-mentioned raw materials comprises the following steps:

[0043] (1) Grind and stir 78g of bio-asphalt and 15g of 40-mesh thermoplastic elastomer at 100°C for 20 minutes to obtain mixture A 3 ;

[0044] (2) the mixture A 3 Mix with 1g of polyvinyl alcohol and 10g of pine oil at 140°C for 20 minutes, then add 0.2g of chopped mineral fiber and stir for 5 minutes to obtain mixture B3 ;

[0045] (3) mix mixture B 3 Stirring at 180° C. for 60 minutes at a stirring speed of 400 r / min.

[0046] The chopped mineral fibers used in this example are carbon fibers with a length of 3 mm.

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Abstract

The invention belongs to the technical field of asphalt, and discloses a modified biological asphalt material, a preparation method thereof and an application of the material. The modified biologicalasphalt material comprises, by weight, 30-78 parts of biological asphalt, 10-15 parts of modified agents, 0.2-0.6 part of mineral fibers, 1-3 parts of stabilizing agents and 10-25 parts of solvents. According to the modified biological asphalt material, special modified agents are selected, softening points and viscosity of the biological asphalt are improved, high-temperature stability of the biological asphalt is improved, mineral fibers have excellent performances of high strength, corrosion resistance and high-temperature resistance and the like, and deformation resistance of the biological asphalt is improved by the mineral fibers. According to the modified biological asphalt material, the biological asphalt is modified by adding the modified agents, the mineral fibers and the stabilizing agents, and high-temperature stability, low-temperature stability and deformation resistance of the biological asphalt are improved, so that the prepared modified biological asphalt material hasgood bearing capacity, deformation recovery capacity and high-temperature rut resistance.

Description

technical field [0001] The invention belongs to the technical field of asphalt, and in particular relates to a modified bio-asphalt material and its preparation method and application. Background technique [0002] With the rapid development of my country's national economy, the demand for road transportation is increasing, which also enables the construction of expressways in our country to maintain a large scale for a long period of time, and about 90 of these expressways More than 100% is asphalt pavement, and at the same time, post-work such as road maintenance also consumes a large amount of asphalt. Traditional petroleum asphalt is mostly refined from imported crude oil, and crude oil is a non-renewable resource. With the severe exploitation of crude oil and the rapid reduction of crude oil reserves, the price of petroleum asphalt is gradually rising, which will seriously affect and hinder the development of asphalt pavement in our country. Sustainable development such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L21/00C08L29/04C08L91/00C08K7/10C08K7/06C08K3/06C08K5/053
Inventor 余雪娟
Owner NANJING COMM INST OF TECH
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