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Modified asphalt and preparation method thereof

A technology of modified asphalt and matrix asphalt, applied in building components, building insulation materials, construction and other directions, can solve the problems of large density difference, difficult compaction, difficult mixing of modified asphalt, etc., and achieve reasonable and easy viscosity. Mixing and compaction, excellent pavement performance

Active Publication Date: 2021-08-06
海南恒建沥青路面有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the selected modifier, crosslinking agent, compatibilizer, viscosity reducer, etc. have a large difference in density from the base asphalt, which makes the modified asphalt form a complex network structure, resulting in difficult mixing when using modified asphalt Combined, not easy to compact the situation

Method used

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  • Modified asphalt and preparation method thereof
  • Modified asphalt and preparation method thereof
  • Modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of modified asphalt, comprises the raw material of following weight: base asphalt 125kg, 50 order rubber powder 15kg, furfural extract oil 5kg, epoxy resin 5kg, diluent 5kg, curing agent 3kg and silicone resin (stabilizer) 6kg; The diluent is mixed with 1kg of ethylene glycol diglycidyl ether, 2kg of propylene oxide butyl ether and 2kg of xylene; the curing agent is mixed with 1kg of polyetheramine, 1.5kg of diethylenetriamine and 0.5kg of triethylamine made.

Embodiment 2

[0028] A kind of modified asphalt, comprises the raw material of following weight: base asphalt 150kg, 40 order rubber powder 50kg, furfural extract oil 10kg, epoxy resin 15kg, diluent 10kg, curing agent 8kg and silicone resin (stabilizer) 12kg; The diluent is made by mixing 3kg of ethylene glycol diglycidyl ether, 3kg of propylene oxide butyl ether and 4kg of xylene; the curing agent is made by mixing 4kg of polyetheramine, 3kg of diethylenetriamine and 1kg of triethylamine .

Embodiment 3

[0030] A kind of modified asphalt, comprises the raw material of following weight: base asphalt 140kg, 35 mesh rubber powder 35kg, furfural extract oil 8kg, epoxy resin 12kg, diluent 8kg, curing agent 6kg and silicone resin (stabilizer) 8kg; The diluent is mixed by ethylene glycol diglycidyl ether 1.5kg, propylene oxide butyl ether 3kg and xylene 3.5kg; the curing agent is made of polyetheramine 3kg, diethylenetriamine 2.2kg, triethylamine 0.8 kg mixed.

[0031] According to the raw material of modified asphalt in above-mentioned embodiment 1~3, its preparation method comprises the steps:

[0032] S1 Weigh the raw materials according to the weight of the formula, heat and melt the base asphalt at 190°C, and add rubber powder and furfural to extract oil during the heating process to obtain a mixed solution 1, the amount of rubber powder added is 40% of the weight of the formula;

[0033] S2 Shear the mixed solution 1 at a shear rate of 3000rpm for 40min, mix the epoxy resin an...

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Abstract

The invention provides modified asphalt and a preparation method thereof, and the modified asphalt comprises the following components in parts by weight: 125-150 parts of matrix asphalt, 15-50 parts of rubber powder, 5-10 parts of furfural extract oil, 5-15 parts of epoxy resin, 5-10 parts of a diluent, 3-8 parts of a curing agent and 6-12 parts of a stabilizer. Effective combination of the rubber powder, the furfural extract oil, the epoxy resin, the diluent and the curing agent is achieved, and the prepared modified asphalt is not prone to layering, has good compactness and flatness, is excellent in pavement performance, can be directly used for road paving and is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of asphalt, in particular to a modified asphalt and a preparation method thereof. Background technique [0002] Asphalt is widely used in road engineering, but asphalt itself has the disadvantages of unstable performance and easy softening, which affects the service life of asphalt pavement. Therefore, modifying asphalt to improve its performance has become an urgent requirement for current pavement construction. Usually, the performance of asphalt or asphalt mixture can be improved by measures such as rubber, resin, high molecular polymer, ground rubber powder or other fillers (modifiers) or "slight oxidation processing of asphalt". improve. [0003] Base asphalt is a weakly polar or non-polar substance, while epoxy resin is extremely polar, and the polarity difference between the two is large. The use of epoxy asphalt modified asphalt will cause poor compatibility and epoxy resin Asphalt toughness is af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L63/00C08L19/00C08L91/00
CPCC08L95/00C08L2205/035C08L63/00C08L19/003C08L91/00
Inventor 练炳维
Owner 海南恒建沥青路面有限公司
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