Compounded high-viscosity high-elasticity asphalt material and preparation method therefor

An asphalt material and high-elasticity technology, which is applied in building insulation materials, building components, buildings, etc., can solve the problem that the thermal stability and storage stability need to be further optimized, the high elastic properties of rubber cannot be fully utilized, and the low-temperature frost-heave resistance is not good. Clarify and other issues to achieve significant socio-economic and environmental benefits, improve storage stability, improve low-temperature ductility and high-temperature thermal stability

Inactive Publication Date: 2019-11-15
TONGJI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the rubber powder used in this patent has a fine particle size and is in the form of powder, it has been degraded to a large extent after long-term high-temperature grinding, resulting in a large loss of elasticity of the rubber powder, which cannot fully utilize the high elastic properties of rubber. Without a crosslinking agent, the thermal stability and storage stability need to be further optimized, and the low temperature frost heave resistance performance is not clear

Method used

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  • Compounded high-viscosity high-elasticity asphalt material and preparation method therefor
  • Compounded high-viscosity high-elasticity asphalt material and preparation method therefor
  • Compounded high-viscosity high-elasticity asphalt material and preparation method therefor

Examples

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Effect test

Embodiment 1

[0026] 82.8 parts by mass of No. 70 base asphalt (petroleum asphalt, purchased from Shandong Dongbo Petrochemical Co., Ltd.) with a penetration (25°C, 0.1mm) of 63.0 was first heated to 165°C, and then 4 parts by mass of benzene was slowly added. Ethylene-butadiene-styrene block copolymer modifier (Korea LG101) and 2.5 parts by mass of rubber oil and 0.5 parts by mass of plasticizer (dioctyl phthalate: dioctyl maleate o Dibutyl phthalate=3:1), using a high-speed shearing machine to shear at a shear rate of 3000r / min, the shearing time is 1 hour, and then stirred for 1 hour. Replace the agitator afterwards, stir with a stirring rate of 500r / min, set the temperature at the same time as 180°C, then slowly add 0.2 parts by mass of composite stabilizer and 10 parts by mass of dry rubber particles (20 mesh), the required temperature is Stabilize at 180°C within 5 minutes, and then stir at a stirring rate of 1000r / min for 45 minutes to prepare a compound high-viscosity and high-elast...

Embodiment 2

[0030]76.3 parts by mass of No. 90 base asphalt (petroleum asphalt, purchased from Shandong Dongbo Petrochemical Co., Ltd.) with a penetration (25°C, 0.1mm) of 90.5 was first heated to 165°C, and then 8 parts by mass of benzene was slowly added. Ethylene-butadiene-styrene block copolymer modifier (Korea LG101) and 1.5 parts by mass of biomass pitch and 0.5 parts by mass of plasticizer (dioctyl phthalate: dioctyl maleate Dibutyl phthalate=3:1), using a high-speed shearing machine to shear at a shear rate of 5000r / min, the shearing time is 1 hour, and then stirred for 2.0 hours. Replace the agitator afterwards, stir with a stirring rate of 600r / min, and set the temperature at 190°C, then slowly add 0.2 parts by mass of a composite stabilizer and 20 parts by mass of dry rubber particles (24 mesh), requiring a temperature of Stabilize at 190°C within 5 minutes, and then stir at a stirring rate of 1000r / min for 60 minutes to prepare a compound high-viscosity and high-elasticity asp...

Embodiment 3

[0035] 69.8 parts by mass of No. 100 base asphalt (petroleum asphalt, purchased from Shandong Dongbo Petrochemical Co., Ltd.) with a penetration (25°C, 0.1mm) of 98.5 was first heated to 165°C, and then 6 parts by mass of benzene was slowly added. Ethylene-butadiene-styrene block copolymer modifier (Korea LG101) and 2.0 parts by mass of furfural extract oil and 0.5 parts by mass of plasticizer (dioctyl phthalate: dioctyl maleate Dibutyl phthalate=3:1), using a high-speed shearing machine to shear at a shear rate of 4000r / min, the shearing time is 1 hour, and then stirred for 1.5 hours. Replace the agitator afterwards, stir with a stirring rate of 300r / min, and set the temperature at 200°C, then slowly add 0.2 parts by mass of a composite stabilizer and 15 parts by mass of dry rubber particles (30 mesh), requiring a temperature of Stabilize at 200°C within 5 minutes, and then stir at a stirring rate of 1000r / min for 75 minutes to prepare a compound high-viscosity and high-elast...

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Abstract

The invention relates to a compounded high-viscosity high-elasticity asphalt material and a preparation method therefor. The asphalt material is prepared from the following ingredients in parts by weight: 5-25 parts of waste tire rubber granules, 2-8 parts of styrene-butadiene-styrene block copolymer, 0-8 (but 0 is exclusive) parts of blend oil, 0-1 (but 0 is exclusive) part of plasticizer, 0.1-0.5 part of composite stabilizer and 57-93 parts of matrix asphalt. Compared with the prior art, the asphalt material prepared by the method has the advantages that the kinetic viscosity at the temperature of 60 DEG C is not smaller than 20,000Pa.s, the recovery of elasticity at the temperature of 25 DEG C is not smaller than 90%, the storage stability at the temperature of 180 DEG C is not greaterthan 4.0 DEG C, the asphalt material has good mechanical properties and storage stability, the high-temperature rut resistance of pervious asphalt concrete can be improved, the low-temperature frost heave resistance of the pervious asphalt concrete can also be improved, the durability of the pervious asphalt concrete is remarkably improved, and the service life of the pervious concrete is prolonged.

Description

technical field [0001] The invention belongs to the technical field of road asphalt binders, and relates to a composite high-viscosity and high-elasticity asphalt material that uses waste tire rubber particles and styrene-butadiene-styrene block copolymers to compound and modify matrix asphalt and its preparation method. Background technique [0002] Drainage asphalt pavement is a skeleton-void structure designed according to the intercalation mechanism of coarse aggregates, and the coarse aggregates are bonded by asphalt binder. The porosity of drainage asphalt is between 15-25%. Due to the existence of a large number of voids, drainage asphalt mixture is prone to aging, spalling, water damage and frost heave damage when exposed to air, heat, light, water and adverse environmental conditions and other diseases seriously affect the durability and performance of drainage asphalt pavement. The performance of asphalt binder (especially the size of cohesion and cohesion) and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L19/00C08L53/02C08L29/04C08K13/02C08K3/22C08K3/06C08K5/12C08K5/11C08K5/07
CPCC08K2003/2296C08K2201/011C08L95/00C08L19/003C08L53/02C08L29/04C08K13/02C08K3/22C08K3/06C08K5/12C08K5/11C08K5/07
Inventor 肖飞鹏王金刚陈军黄建波刘继
Owner TONGJI UNIV
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