阅读说明：本技术 一种净味高粘沥青改性剂及其沥青混合料 (Odorless high-viscosity asphalt modifier and asphalt mixture thereof ) 是由 高云龙 赵普 郑志华 潘鑫 何子豪 张琼之 罗昆祥 李坤 于�玲 于 2020-06-24 设计创作，主要内容包括：本发明提供一种净味高粘沥青改性剂,由以下组份及重量份制成：热塑性弹性体4～7份、橡胶类聚合物4～8份、热塑性树脂5～8份、气味抑制剂0.05～0.2份、界面活性剂0.1～0.5份。本发明还提供了一种净味高粘沥青改性剂的沥青混合料,本发明的一种净味高粘沥青改性剂通过气味抑制剂和界面作用剂作用,直接制备可消除高粘沥青混合料生产过程中气味消除,显著降低沥青生产、施工过程中H<Sub>2</Sub>S,SO<Sub>2</Sub>,NO<Sub>X</Sub>等沥青烟气的生成和挥发,达到显著气味消除效果并且保证沥青混合料的性能不发生明显变化,有利于环境保护及人员身体健康。(The invention provides a smell-removing high-viscosity asphalt modifier which is prepared from the following components in parts by weight: 4-7 parts of thermoplastic elastomer, 4-8 parts of rubber polymer, 5-8 parts of thermoplastic resin, 0.05-0.2 part of odor inhibitor and 0.1-0.5 part of surfactant. The invention also provides an asphalt mixture of the odorless high-viscosity asphalt modifier, and the odorless high-viscosity asphalt modifier can eliminate odor in the production process of the high-viscosity asphalt mixture and obviously reduce H in the production and construction processes of asphalt through the action of the odor inhibitor and the interfacial agent 2 S，SO 2 ，NO X And the generation and volatilization of asphalt smoke can achieve the obvious odor elimination effect and ensure that the performance of the asphalt mixture is not obviously changed, thereby being beneficial to environmental protection and the health of personnel.)

1. A smell-free high-viscosity asphalt modifier is characterized in that: the composite material consists of the following raw materials in parts by weight:

4-7 parts of thermoplastic elastomer, 4-8 parts of rubber polymer, 5-8 parts of thermoplastic resin, 0.05-0.2 part of odor inhibitor and 0.1-0.5 part of surfactant.

2. The odor-free high-viscosity asphalt modifier as claimed in claim 1, wherein: the thermoplastic elastomer is one or more of styrene-butadiene-styrene copolymer, styrene-isoprene-styrene copolymer and styrene-ethylene-butadiene-styrene copolymer.

3. The odor-free high-viscosity asphalt modifier as claimed in claim 1, wherein: the rubber polymer is one or more of natural rubber, styrene-butadiene rubber and acrylonitrile-butadiene copolymer.

4. The odor-free high-viscosity asphalt modifier as claimed in claim 1, wherein: the thermoplastic resin is one or more of C5 petroleum resin, C9 petroleum resin and rosin resin.

5. The odor-free high-viscosity asphalt modifier as claimed in claim 1, wherein: the odor inhibitor is one or more of lauryl methacrylate, vanillin, benzaldehyde and hydroquinone.

6. The odor-free high-viscosity asphalt modifier as claimed in claim 1, wherein: the surfactant is alkylolamide.

7. The asphalt mixture of the odorless high-viscosity asphalt modifier as claimed in any one of claims 1 to 6, wherein the odorless high-viscosity asphalt modifier is dry-mixed with hot aggregate for 10 to 15 seconds, sprayed with asphalt and mixed for 40 to 50 seconds to obtain the odorless high-viscosity asphalt mixture.

8. The odorless high-viscosity asphalt mixture according to claim 7, wherein: the addition amount of the odor-free high-viscosity asphalt modifier is 0.4-0.6% of the mass of the asphalt mixture.

Technical Field

The invention relates to a smell-free high-viscosity asphalt modifier and an asphalt mixture thereof.

Background

The permeable pavement is a pavement structure with open gradation and large void ratio, can reduce the noise generated when a vehicle runs on a road, improve the friction coefficient when the vehicle brakes, shorten the braking distance, and can permeate accumulated water on the road surface during rainfall into the lower impermeable layer and quickly drain the water through the road shoulder part, thereby lightening the damage of the accumulated water on the road surface structure, and the pavement structure can also reduce the glare phenomenon and the water film smoothing phenomenon of the road surface when the vehicle runs at high speed in rainy days, and improve the driving safety.

The permeable pavement has many advantages in practical application, but due to the special structure, the porosity of the pavement reaches about 18-25%, and the porosity of the general dense-graded asphalt concrete pavement is only 3-6%, so that higher requirements are provided for the performance of the asphalt cement for paving. The main reasons are as follows: asphalt cement must have higher viscosity to increase the binding power between the cement and the aggregate and prevent the surface aggregate from flying away under the action of wheel load. Secondly, the pavement structure with large porosity increases the contact probability of asphalt cement with sunlight and air, and in order to prevent aging caused by the contact probability, the asphalt film wrapping the aggregate needs to have enough thickness. And thirdly, due to the permeation of rainwater and the like into the mixed material body, the asphalt has good adhesion to the aggregate to ensure water resistance. And fourthly, when the asphalt cement is applied to heavy traffic roads, the mixture has higher plastic deformation resistance, and the asphalt cement is required to have higher softening point and adhesion. However, when the production and construction processes of the high-viscosity asphalt are found, a large amount of asphalt smoke is generated, the surrounding environment is seriously affected, and the health of people is harmed.

The smoke contains various organic matters including carbocyclic hydrocarbon, cyclic hydrocarbon derivatives and other compounds, which have harmful effects on human health, and the asphalt smoke contains various polycyclic aromatic hydrocarbon substances including benzopyrene, benzanthracene, carbazole and the like, most of which are carcinogenic and strong carcinogenic substances, the particle size is 0.1-1.0 mu m mostly, the minimum is only 0.01 mu m, the maximum is about 10.0 mu m, and especially the smoke contains various carcinogenic substances represented by 3, 4-benzopyrene. The main way of harming human health is to attach the fly ash with the particle size of less than 8 mu m and suck the fly ash into human bodies through respiratory tracts. Therefore, the purification treatment of the asphalt smoke is very necessary to ensure that the emission meets the atmospheric environmental standard.

The existing high-viscosity asphalt mixture has high asphalt viscosity due to the fact that the polymer is used for compounding and modifying the asphalt, the construction temperature of the asphalt mixture is high normally for guaranteeing the construction workability, a large amount of smoke is released in the construction process, and the surrounding environment is seriously affected. Meanwhile, finished product odorless high-viscosity asphalt needs to be prepared separately, and the addition of the odor purifying agent often damages the heat storage stability of the finished product high-viscosity asphalt and influences the construction quality.

Disclosure of Invention

The invention aims to overcome the defects and provide the odor-free high-viscosity asphalt modifier and the asphalt mixture thereof.

In order to solve the technical problems, the invention adopts the following technical scheme:

the odor-free high-viscosity asphalt modifier is composed of the following raw materials in parts by weight:

4-7 parts of a thermoplastic elastomer; 4-8 parts of a rubber polymer; 5-8 parts of thermoplastic resin; 0.05 to 0.2 part of odor inhibitor and 0.1 to 0.5 part of surfactant.

Preferably, the thermoplastic elastomer is one or more of styrene-butadiene-styrene copolymer, styrene-isoprene-styrene copolymer and styrene-ethylene-butadiene-styrene copolymer.

Preferably, the rubber polymer is one or more of natural rubber, styrene-butadiene rubber and acrylonitrile-butadiene copolymer.

Preferably, the thermoplastic resin is one or more of C5 petroleum resin, C9 petroleum resin and rosin resin.

Preferably, the odor inhibitor is one or more of lauryl methacrylate, vanillin, benzaldehyde and hydroquinone.

Preferably, the surfactant is an alkylolamide.

The invention also provides an asphalt mixture of the odorless high-viscosity asphalt modifier, and the odorless high-viscosity asphalt modifier is dry-mixed with the hot aggregate for 5-15 s, sprayed with asphalt and mixed for 40-50 s to obtain the odorless high-viscosity asphalt mixture.

Preferably, the addition amount of the odorless high-viscosity asphalt modifier is 0.4-0.6% of the mass of the asphalt mixture.

The odor-free high-viscosity asphalt modifier has the beneficial effects that: the odor inhibitor component and the hot aggregate are fully mixed and dispersed, and then the odor inhibitor component and the hot aggregate are quickly mixed with the asphalt to prepare the odorless high-viscosity asphalt mixture, so that the problem of high-viscosity asphalt smoke elimination is solved, and the construction quality of a high-viscosity asphalt pavement is ensured; meanwhile, the odor inhibitor is effectively dispersed in the asphalt under the action of the surfactant, so that the inhibition effect is enhanced, and the heat storage stability of the high-viscosity asphalt is improved; and the interfacial energy of the asphalt is obviously reduced, the workability of the asphalt in production and construction is improved, the temperature required by the asphalt production and construction is reduced, and the generation and volatilization of asphalt smoke are further reduced.

Detailed Description

The technical solution of the present invention is explained in detail with reference to the following examples.