High viscosity high elasticity asphalt modifier and preparation method thereof

An asphalt modifier and a high-elasticity technology, applied in the field of asphalt modifiers, can solve the problems of difficulty in meeting the stress absorbing intermediate layer, poor low-temperature crack resistance, poor elastic recovery ability, and poor grain shape, so as to improve the fatigue resistance of pavement. performance, improve bonding properties, and improve the effect of elastic recovery

Active Publication Date: 2009-12-30
WUHAN MUNICIPAL CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relative backwardness of my country's rubber powder industry, rubber powder is mostly directly cut from waste tires without desulfurization treatment, and the particle shape is not good. Domestic rubber asphalt is difficult to meet the requirements of the stress-abso...

Method used

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  • High viscosity high elasticity asphalt modifier and preparation method thereof

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Effect test

Embodiment 1

[0023] A high-viscosity and high-elasticity asphalt modifier, which is prepared from modified main agent, tackifier, anti-aging component, plasticizing component and stabilizer raw materials. The mass ratio of each raw material is: modified main agent : tackifier: anti-aging component: plasticizing component: stabilizer=100:20:18:15:2;

[0024] The modified main agent is linear styrene-butadiene-styrene block copolymer; the tackifier is petroleum resin; the anti-aging component is activated rubber powder; the The plasticizing component is dioctyl phthalate; the stabilizer is sulfur.

[0025] The preparation method of above-mentioned a kind of high-viscosity high-elasticity asphalt modifier, it comprises the steps:

[0026] 1) Selection of raw materials: according to the mass ratio of each raw material: modified main agent: tackifier: anti-aging component: plasticizing component: stabilizer = 100:20:18:15:2, select modified main Agents, tackifiers, anti-aging components, plas...

Embodiment 2

[0034] A high-viscosity and high-elasticity asphalt modifier, which is prepared from modified main agent, tackifier, anti-aging component, plasticizing component and stabilizer raw materials. The mass ratio of each raw material is: modified main agent : tackifier: anti-aging component: plasticizing component: stabilizer=100:25:20:18:3;

[0035] The modified main agent is star-shaped styrene-butadiene-styrene block copolymer; the tackifier is rosin resin; the anti-aging component is activated rubber powder; the The plasticizing component is dibutyl phthalate; the stabilizer is sulfur.

[0036] The preparation method of above-mentioned a kind of high-viscosity high-elasticity asphalt modifier, it comprises the steps:

[0037] 1) Selection of raw materials: According to the mass ratio of each raw material: modified main agent: tackifier: anti-aging component: plasticizing component: stabilizer = 100:25:20:18:3, select modified main agent Agents, tackifiers, anti-aging component...

Embodiment 3

[0043] A high-viscosity and high-elasticity asphalt modifier, which is prepared from modified main agent, tackifier, anti-aging component, plasticizing component and stabilizer raw materials. The mass ratio of each raw material is: modified main agent : tackifier: anti-aging component: plasticizing component: stabilizer=100:30:20:25:3;

[0044] The modified main agent is star-shaped styrene-butadiene-styrene block copolymer; the tackifier is petroleum resin; the anti-aging component is activated rubber powder; the The plasticizing component is dibutyl phthalate; the stabilizer is sulfur.

[0045] The preparation method of above-mentioned a kind of high-viscosity high-elasticity asphalt modifier, it comprises the steps:

[0046] 1) Selection of raw materials: according to the mass ratio of each raw material: modified main agent: tackifier: anti-aging component: plasticizing component: stabilizer = 100:30:20:25:3, select modified main agent Agents, tackifiers, anti-aging compo...

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Abstract

The invention belongs to the technical field of asphalt modifier, in particular relates to a high viscosity high elasticity asphalt modifier and a preparation method thereof. The high viscosity high elasticity asphalt modifier is characterized in that the high viscosity high elasticity asphalt modifier is prepared by raw materials of a primary modifier, a tackifier, an anti-ageing component, a plastifying component and a stabilizer with the mass proportioning being 100:20-40:18-32:15-30:2-5 sequentially; the primary modifier is of phenylethylene-butadiene-phenylethylene segmented copolymer; the tackifier is petroresins or abietic resin; the anti-ageing component is activated rubber powder; the plastifying component is dioctyl phthalate or dibutyl phthalate; and the stabilizer is sulfur. The asphalt modifier prepared by the method can improve high temperature stability, low temperature anti-cracking performance, anti-ageing performance and elasticity restoration capability of asphalt.

Description

technical field [0001] The invention belongs to the technical field of asphalt modifiers, in particular to a high-viscosity and high-elasticity asphalt modifier and a preparation method thereof. Background technique [0002] With the rapid development of highway traffic in our country, the construction of long-span bridges, especially large bridges across rivers and seas, has developed rapidly. For long-span bridges, the steel-concrete composite beam structure is used to effectively prevent the asphalt mixture on the steel deck from being difficult to bond with the steel plate at high temperatures and co-deform, which will cause the bridge deck pavement to move, embrace, etc. problem. However, the composite girder deck is spliced ​​by prefabricated prestressed concrete slabs, which causes technical problems such as waterproofing of the bridge deck and preventing reflection cracks in the composite beam deck pavement. The middle layer of stress-absorbing film is widely used ...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L57/02C08L93/04C08L21/00C08K5/12C08K3/06C08L95/00
Inventor 丁庆军李潜黄绍龙胡曙光沈凡朱铭黎伟斌刘伟
Owner WUHAN MUNICIPAL CONSTR GROUP
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