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High performance pavement material of epoxy asphalt, preparation method and application

An epoxy asphalt and pavement material technology, which is applied to building thermal insulation materials, on-site coagulation pavement, roads, etc. The effect of improving bond strength and improving fatigue resistance

Inactive Publication Date: 2007-07-25
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this modification method is based on the physical crosslinking network formed by polymer materials in the process of blending with asphalt, and the improvement of physical properties of modified asphalt is limited. Although this modified asphalt can meet the requirements of ordinary road surfaces, it is not suitable for high Heavy-duty traffic roads and roads with wide temperature ranges, such as bridge roads, are still far from ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Material:

[0023] Part A: 480 parts of bitumen (Shell AH-70), 100 parts of modified oleic acid, 80 parts of modified ricinoleic acid, 4 parts of benzylamine, 4 parts of copolymer of ethylene oxide and propylene oxide.

[0024] Part B: Bisphenol A type epoxy resin.

[0025] Preparation:

[0026] Heat the asphalt to 100-130°C, add modified oleic acid and modified ricinoleic acid into the asphalt, stir and mix, then transfer to a colloid mill for high-speed shearing to disperse evenly, the shearing mixing time is 60 minutes, and then add Benzylamine as an accelerator and a copolymer of ethylene oxide and propylene oxide as a defoamer were subjected to high shear mixing for 50 minutes to obtain Part A.

[0027] Before use, heat the obtained part A to 100-160°C, mix according to the mass ratio of part A and part B to be cured at 3.5:1, stir evenly at >120°C, and keep it for 6 hours to cure to obtain high-performance epoxy Asphalt pavement material. The obtained high-per...

Embodiment 2

[0029] Material:

[0030] Part A: 300 parts of asphalt (Shell AH-70), 80 parts of modified oleic acid, 100 parts of modified ricinoleic acid, 4 parts of benzylamine, 4 parts of a copolymer of ethylene oxide and propylene oxide.

[0031] Part B: Bisphenol A type epoxy resin.

[0032] Preparation:

[0033] Heat the asphalt to 100-130°C, add modified oleic acid and modified ricinoleic acid into the asphalt, stir and mix, then transfer to a colloid mill for high-speed shearing to disperse evenly, the shearing mixing time is 25 minutes, and then add Benzylamine as an accelerator and a copolymer of ethylene oxide and propylene oxide as a defoamer were subjected to high shear mixing for 40 minutes to obtain Part A.

[0034] Before use, heat the obtained part A to 100-160°C, mix according to the mass ratio of part A and part B to be cured at 2.5:1, stir evenly at >120°C, and keep it for 6 hours to cure to obtain high-performance epoxy Asphalt pavement material. The obtained high-p...

Embodiment 3

[0036] Material:

[0037] Part A: 400 parts of asphalt (Zhonghai No. 36-1, No. AH-50), 30 parts of modified oleic acid, 200 parts of modified ricinoleic acid, 4 parts of KOH (produced by Nanjing Chemical Reagent Factory), ethylene oxide and Propylene oxide copolymer 4 parts.

[0038] Part B: Bisphenol A type epoxy resin.

[0039] Preparation:

[0040] Heat the asphalt to 100-130°C, add modified oleic acid and modified ricinoleic acid into the asphalt, stir and mix, then transfer to a colloid mill for high-speed shearing to disperse evenly, the shearing mixing time is 20 minutes, and then add Part A was obtained by high shear mixing of KOH as accelerator and copolymer of ethylene oxide and propylene oxide as defoamer for 40 minutes.

[0041] Before use, heat the obtained part A to 100-160°C, mix according to the mass ratio of part A and part B to be cured at 3.5:1, stir evenly at >120°C, and keep it for 4-8 hours to cure to obtain high performance Epoxy asphalt pavement mat...

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PUM

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Abstract

This invention discloses a method for preparing high-performance epoxy asphalt road surface material and its application. The road surface material comprises components A and B. Component A is composed of: asphalt 50-100 parts, curing agent 20-50 parts, promoter 0.4-1 part, and antifoaming agent 0.5-1 part. Component B is epoxy resin. The weight ratio of A to B is (2.5-7):1. The method comprises: (1) heating asphalt to 100-130 deg.C, adding curing agent, mixing by high-speed shearing for 10-60 min, adding promoter and antifoamer, and mixing by high-speed shearing for 5-50 min to obtain component A; (2) heating component A to 100-160 deg.C, mixing components A and B according to the weight ratio of (2.5-7):1, stirring uniformly at 120-140 deg.C, and curing for 4-8 h. The product is a main material for producing epoxy asphalt concrete. The product has high resistance to corrosion, water, weathering, fatigue, creep at high temperatures, and cracking at low temperatures.

Description

Technical field: [0001] The invention relates to a modified asphalt and its preparation method and application, in particular to a high-performance epoxy asphalt pavement material used for laying road bridges and its preparation method and application. Background technique: [0002] Asphalt has excellent waterproof and bonding properties, and is rich in resources and low in price, so it has been widely used in pavement materials, waterproof materials and sealing materials for a long time. However, due to the relatively low molecular weight of asphalt and its wide molecular weight distribution, its mechanical properties are highly sensitive to temperature. widely used. [0003] With the rapid development of my country's modernization construction, the rapid development of transportation, and the paving of a large number of high-grade roads, the use of road asphalt is becoming more and more important and common. It can improve the service life of road asphalt, increase road c...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K5/17E01C7/35C08K5/09C08L63/00C08L71/00
Inventor 王治流陈正年谢鸿峰程镕时
Owner NANJING UNIV
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