A kind of modified high-viscosity asphalt and preparation method thereof

A sticky asphalt and modification technology, which is applied in the field of modified high-viscosity asphalt and its preparation, can solve the problems of insufficient storage stability, toughness, visco-toughness, etc., and achieve good viscous toughness, good storage stability, and good corrosion resistance Effect

Active Publication Date: 2019-12-13
SHENZHEN MUNICIPAL ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure that the permeable asphalt mixture has good high-temperature anti-rutting performance, durability and anti-scattering performance, it is necessary to use high-viscosity modified asphalt as the binder. It has a shortpart

Method used

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  • A kind of modified high-viscosity asphalt and preparation method thereof
  • A kind of modified high-viscosity asphalt and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] The formula of embodiment 1 modified high-viscosity asphalt

[0027] The compound modified high-viscosity asphalt formula of this embodiment is shown in Table 1:

[0028] Table 1: Compound Modified High Viscosity Asphalt Formula

[0029]

[0030] This embodiment takes Thai Petrochemical IRPC70# road petroleum asphalt as the base road petroleum asphalt, adopts star-shaped and linear butadiene-styrene block copolymer (SBS) as modifier; selects two kinds of polymers with different molecular weights to synthesize Resin is used as a viscous and toughness additive. Its molecular structure contains active groups such as hydroxyl groups and ether bonds, and its solid content is 100%. During the reaction process, new —OH and —O— are further generated to make the modified high-viscosity modified Asphalt has high cohesion and adhesion; use domestic granular stabilizer, the role of the stabilizer can reduce the interfacial energy between the base asphalt and SBS, viscosity and ...

Embodiment 2

[0034] Embodiment 2: the preparation method of composite modified high-viscosity road petroleum asphalt

[0035] The specific preparation process of the composite modified high-viscosity road petroleum asphalt in this embodiment is as follows:

[0036] (1) First weigh the SBS modifier, resin viscosity and toughness additive, and granular stabilizer;

[0037] (2) Heat the base asphalt to about 180°C, heat while stirring, so that the asphalt is heated evenly, then pour the high-temperature molten base asphalt into the modified asphalt sample container, put the sample container into the electric heating mantle, and use electric heating Continue heating the jacket to keep the temperature at 180°C;

[0038] (3) Put down the shearing mixing head so that it is 1 / 3 from the bottom of the liquid surface, turn on the shearing machine, and control the speed at 2500-3000r / min, so that the high-temperature asphalt liquid moves in a vortex without splashing. For the pre-weighed SBS modifi...

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Abstract

The invention provides modified high-viscosity asphalt and a preparation method thereof. The modified high-viscosity asphalt is prepared from, by mass, 88.6%-91.5% of pavement petroleum asphalt, 6.5%-8.5% of butadiene-styrene block copolymer, 1.0%-1.4% of low molecular weight polymer synthetic resin with the molecular weight of 1,480-2,200, 0.8%-1.2% of high molecular weight polymer synthetic resin with the molecular weight of 4,800-8,000 and 0.2%-0.3% of stabilizer. The modified high-viscosity asphalt has the advantage of being good in storage stability, the polymer resin which is slow in separation and is not degradable is used for compound modification, the toughness and visco-toughness of the modified pavement petroleum asphalt are good, the 60-DEG C dynamic viscosity is especially prominent, exceeds 110,000 Pa.S, and is far larger than that, being 60,000-80,000 Pa.S, of commercially available high-viscosity modified asphalt, and the anticorrosion performance is also good.

Description

technical field [0001] The invention relates to the technical field of road petroleum asphalt, in particular to a modified high-viscosity asphalt and a preparation method thereof. Background technique [0002] In recent years, permeable asphalt pavement has been widely used on the main roads and expressways of Beijing, Shanghai, Shenzhen and other cities due to its good drainage, noise reduction, anti-skid and other road performance. In order to ensure that the permeable asphalt mixture has good high-temperature anti-rutting performance, durability and anti-scattering performance, it is necessary to use high-viscosity modified asphalt as the binder. It has a shortpart. Contents of the invention [0003] Therefore, the present invention provides a modified high-viscosity asphalt and a preparation method thereof in order to overcome the above-mentioned shortcomings of existing human bone substitute materials. [0004] The technical scheme adopted in the present invention i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L101/00
CPCC08L95/00C08L2205/025C08L2205/035C08L2205/08C08L53/02C08L101/00
Inventor 范璐璐周国坚王志彬涂亮亮叶军陈建友游长磊李恭博刘忠
Owner SHENZHEN MUNICIPAL ENG
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