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High-performance road asphalt additive

A kind of asphalt additive, high-performance technology, applied in the direction of building components, fiber chemical characteristics, building insulation materials, etc., can solve the problems of less research on additives, single asphalt modification effect, etc., achieve performance optimization, comprehensive performance improvement, and meet the technical requirements required effect

Pending Publication Date: 2021-12-17
COMM DESIGN INST CO LTD OF JIANGXI PROV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing additives have a single modification effect on asphalt, and there are few studies on additives that can simultaneously improve various properties of asphalt.

Method used

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  • High-performance road asphalt additive

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Effect test

Embodiment 1

[0017] A high-performance road asphalt additive, including styrene-butadiene-styrene block copolymer, rubber powder, oxide powder and lignin fiber; wherein, the oxide powder is Ce, Fe, Mn composite oxide coated TiO 2 Powder, the rubber powder is styrene-butadiene rubber powder. The parts by weight of each component are: 20 parts of styrene-butadiene-styrene block copolymer, 5 parts of rubber powder, 6 parts of oxide powder, and 3 parts of lignin fiber;

[0018] Wherein, the preparation method of the lignin fiber refers to the method described in "Alkali Lignin Modification and Fiber Preparation Research" (Xue Fenglian, etc.), the steps are:

[0019] (1) Mix lignin powder and polyethylene glycol 400 in a mass ratio of lignin powder: polyethylene glycol 400 = 1:2 to form a mixture, then place the mixture in a closed container and heat to 160 ± 5 Insulate at ℃ for 2 hours, after the end of the insulation, air cool to room temperature, then open the airtight container, add the m...

Embodiment 2

[0025] A high-performance road asphalt additive, including styrene-butadiene-styrene block copolymer, rubber powder, oxide powder and lignin fiber; wherein, the oxide powder is Ce, Fe, Mn composite oxide coated TiO 2 Powder, the rubber powder is styrene-butadiene rubber powder. The parts by weight of each component are: 24 parts of styrene-butadiene-styrene block copolymer, 7 parts of rubber powder, 8 parts of oxide powder, and 6 parts of lignin fiber;

[0026] Wherein, the preparation method of the lignin fiber refers to the method described in "Alkali Lignin Modification and Fiber Preparation Research" (Xue Fenglian, etc.), the steps are:

[0027] (1) Mix lignin powder and polyethylene glycol 400 in a mass ratio of lignin powder: polyethylene glycol 400 = 1:2 to form a mixture, then place the mixture in a closed container and heat to 160 ± 5 Insulate at ℃ for 2 hours, after the end of the insulation, air cool to room temperature, then open the airtight container, add the m...

Embodiment 3

[0033] A high-performance road asphalt additive, including styrene-butadiene-styrene block copolymer, rubber powder, oxide powder and lignin fiber; wherein, the oxide powder is Ce, Fe, Mn composite oxide coated TiO 2 Powder, the rubber powder is styrene-butadiene rubber powder. The parts by weight of each component are: 28 parts of styrene-butadiene-styrene block copolymer, 8 parts of rubber powder, 10 parts of oxide powder, and 7 parts of lignin fiber;

[0034] Wherein, the preparation method of the lignin fiber refers to the method described in "Alkali Lignin Modification and Fiber Preparation Research" (Xue Fenglian, etc.), the steps are:

[0035] (1) Mix lignin powder and polyethylene glycol 400 in a mass ratio of lignin powder: polyethylene glycol 400 = 1:2 to form a mixture, then place the mixture in a closed container and heat to 160 ± 5 Insulate at ℃ for 2 hours, after the end of the insulation, air cool to room temperature, then open the airtight container, add the ...

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Abstract

The invention discloses a high-performance road asphalt additive. The high-performance road asphalt additive comprises a styrene-butadiene-styrene block copolymer, rubber powder, oxide powder and lignin fibers, wherein the oxide powder is TiO2 powder coated with Ce, Fe and Mn composite oxide. The preparation method of the lignin fiber comprises the following steps: (1) uniformly mixing lignin powder and polyethylene glycol to form a mixture, then putting the mixture into a closed container, carrying out heating to 160 + / -5 DEG C, preserving heat, carrying out air-cooling to normal temperature after heat preservation, then opening the closed container, adding the mixture into deionized water, carrying out stirring, carrying out filtering, and drying a filter cake to obtain modified lignin powder; (2) adding the modified lignin powder into a melt spinning machine for spinning to obtain the lignin fiber. The additive has a good optimization effect on the performance of asphalt, the comprehensive performance of the modified and optimized asphalt is improved, and the technical requirements of the asphalt are met.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a high-performance road asphalt additive. Background technique [0002] The asphalt pavement can not only protect the pavement structure, but also transfer the surface load to the underlying layer. Therefore, the quality of the asphalt pavement is the decisive factor affecting the driving safety and comfort of the pavement, and it is also one of the important factors affecting the design of the mixture. [0003] Common optimization methods for asphalt generally include: rational selection of asphalt dosage, improvement of aggregates, and addition of additives to improve asphalt performance. The use of various additives can optimize the performance of asphalt or modified asphalt mixture. However, the existing additives have a single modification effect on asphalt, and there are few studies on additives that can simultaneously improve various properties of asphalt. Co...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L21/00C08L97/00C08L95/00C08K3/22C08K9/10D01F9/00D01F1/10
CPCC08L53/02C08L95/00D01F9/00D01F1/10C08L2205/16C08K2003/2241C08L21/00C08L97/005C08K3/22C08K9/10
Inventor 嵇其伟刘杨青刘劲勇黄勇盛致远
Owner COMM DESIGN INST CO LTD OF JIANGXI PROV
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