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Strong-viscosity emulsified modified asphalt and preparation method thereof

A technology for emulsification of modified asphalt and modified asphalt, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of high temperature deformation of pavement, difficulty in emulsification, and low sealing layer strength, and achieves the improvement of interlayer adhesion, The preparation process is simple and the effect of improving the strength of the sealing layer

Active Publication Date: 2011-05-18
辽宁省交通科学研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When ordinary emulsified modified asphalt is used as a chip seal, the strength of the seal is low, the road surface is seriously deformed at high temperature, and there are many temperature shrinkage cracks
As far as the application of emulsified modified asphalt is concerned, there are currently the following deficiencies: (1) Although the preparation process of SBR emulsified modified asphalt is relatively simple, SBR latex mainly improves the low temperature performance of asphalt, and does not significantly improve the high temperature performance of asphalt; (2) ) It is difficult to emulsify SBS modified asphalt with a content greater than 2%, the prepared emulsified asphalt has poor storage stability, and the actual road performance is not ideal

Method used

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  • Strong-viscosity emulsified modified asphalt and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment １

[0035] Strong cohesive emulsified modified asphalt, the composition is as follows by mass percentage:

[0036] SBS modified asphalt: 66%;

[0037] Blending agent: 1.0%;

[0038] Emulsifier: 1.2%;

[0039] Stabilizer: 1.5%;

[0040] Thickener: 0.4%;

[0041] Water: balance.

[0042] Among them, the SBS modified asphalt is composed of SBS (styrene-butadiene-styrene block copolymer) and base asphalt. According to the mass percentage, SBS is 4% of the base asphalt quality, and the base asphalt is No. 90 road petroleum asphalt, SBS YH-791 produced by Sinopec Baling Petrochemical Company.

[0043] The blending agent is fatty acid waste, the main component is fatty acid, of which 25% is saturated fatty acid, 35% is monounsaturated fatty acid, 15% is polyunsaturated fatty acid, and the rest is impurities.

[0044] The composition of the emulsifier by mass percentage is: 75% of REDICOTE EM44 produced by AkzoNobel Company in the Netherlands, and the rest is INDULIN AA57 produced b...

Embodiment ２

[0061] Strong cohesive emulsified modified asphalt, the composition is as follows by mass percentage:

[0062] SBS modified asphalt: 70%;

[0063] Blending agent: 1.5%;

[0064] Emulsifier: 1.5%;

[0065] Stabilizer: 2%;

[0066] Thickener: 0.5%;

[0067] Water: balance.

[0068] Among them, the SBS modified asphalt is composed of SBS (styrene-butadiene-styrene block copolymer) and base asphalt. According to the mass percentage, SBS is 5% of the base asphalt quality, and the base asphalt is No. 90 road petroleum asphalt, SBS YH-791H produced by Sinopec Baling Petrochemical Company.

[0069] The blending agent is vacuum distillation side stream oil from petroleum refining, and its composition is 25% saturated, 50% aromatic, 24% colloid, 0.5% asphaltenes, and 0.5% wax.

[0070] The composition of the emulsifier is by mass percentage: 90% of REDICOTE E-4819 produced by AkzoNobel Company of the Netherlands, and the rest is INDULIN AA-63D produced by MeadWestvaco Company of t...

Embodiment ３

[0087] Strong cohesive emulsified modified asphalt, the composition is as follows by mass percentage:

[0088] SBS modified asphalt: 62%;

[0089] Blending agent: 0.5;

[0090] Emulsifier: 0.8%;

[0091] Stabilizer: 1%;

[0092] Thickener: 0.3;

[0093] Water: balance.

[0094] Among them, the SBS modified asphalt is composed of SBS (styrene-butadiene-styrene block copolymer) and base asphalt. According to the mass percentage, SBS is 3% of the base asphalt quality, and the base asphalt is No. 90 road petroleum asphalt, SBS YH-791 produced by Sinopec Baling Petrochemical Company.

[0095] The blending agent is refined furfural oil extracted from lubricating oil, and its composition is 60% aromatics, 20% alkanes, and 20% coke.

[0096] The composition of emulsifier is by mass percent: REDICOTE EM44 50% that Holland AkzoNobel Company produces, and the rest is INDULIN AA-63D that U.S. MeadWestvaco Company produces.

[0097] The stabilizer is NH 4 C1.

[0098] The thickene...

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Abstract

The invention discloses strong-viscosity emulsified modified asphalt and a preparation method thereof. The emulsified modified asphalt comprises the following components in percent by mass: 62-70 percent of SBS (Styrene Butadiene Styrene block copolymer) modified asphalt, 0.5-1.5 percent of blender, 0.8-1.5 percent of emulsifying agent, 1-2 percent of stabilizing agent, 0.3-0.5 percent of thickening agent and the balance of water. The preparation method comprises the steps of: preparing the SBS modified asphalt, adding the blender; adding the emulsifying agent, the stabilizing agent and the thickening agent into water to prepare liquid soap; and uniformly dispersing the modified asphalt and the liquid soap by using a colloid mill to obtain the emulsified modified asphalt. The method disclosed by the invention has the advantages of easy obtaining of the raw materials and simple preparation process; and the strong-viscosity emulsified modified asphalt has excellent road service performance, solves the technical problems of poor caking effect of tack coat oil for the common ultrathin wear layer, easiness of bleeding and low strength of a stone-chip seal coat, can remarkably improve the interlayer caking capacity when used as the tack coat oil, and can remarkably improve the strength and the deformation-resisting capacity of the seal coat when used as the stone-chip seal coat.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to the asphalt material technology for roads, in particular to a strongly cohesive emulsified modified asphalt and a preparation method thereof. Background technique [0002] At present, the emulsified asphalt commonly used as ultra-thin wear layer sticky layer oil and stone chip seal layer in highway construction is mostly fast-cracking ordinary emulsified modified asphalt. The viscous layer oil for ultra-thin wear layer requires emulsified asphalt not only to bond the surface layer and the underlying layer, but more importantly, it can partially enter the upper asphalt mixture to play the role of sealing layer. However, ordinary emulsified modified asphalt is often difficult to meet the actual traffic and climate conditions, and its road performance is poor. When ordinary emulsified modified asphalt is used as ultra-thin wear layer sticky layer oil or stone chip seal lay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08K13/02C08K3/16C08K3/28C04B26/26
Inventor 南雪峰吴耀东刘云全刘守军
Owner 辽宁省交通科学研究院有限责任公司
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