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A kind of high viscosity modified asphalt and preparation method thereof

A modified asphalt, high-viscosity technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of poor temperature stability of asphalt materials, restrictions on the use of asphalt pavement, easy softening, etc. Ensures anti-scattering performance, enhances grip and cohesion

Inactive Publication Date: 2021-09-07
河北长大交通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, asphalt materials have poor temperature stability, are prone to brittle cracks in winter, and are easy to soften at high temperatures in summer. These shortcomings seriously restrict the use of asphalt pavement.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The modified asphalt formula of this embodiment is as follows: matrix asphalt 5kg, composite reinforcing fiber is formed by compounding 100g basalt fiber and 100g polyester fiber, additives include 50g compatibilizer, 80gSBS, 35gEVA, 1.5g sulfur powder, 120g rubber powder, 50g terpene resin, 60g thermoplastic rubber and 5g Roadmate A series of asphalt anti-stripping agents; the rubber powder includes 49.0wt% rubber hydrocarbon, 11.5wt% acetone extract, 32.0wt% carbon black and 7.5wt% ash.

[0034] The preparation method is as follows:

[0035] (1) Dry the base asphalt to 135°C, and convert the base asphalt into liquid asphalt;

[0036] (2) Spread the basalt fiber and polyester fiber evenly, spray liquid asphalt on the surface and cool it down to below -10°C quickly, so that the fiber surface is evenly wrapped with asphalt film, and flip it quickly during the cooling process to prevent composite reinforcement fibers Adhesion; Then the composite fiber wrapped with asph...

Embodiment 2

[0045]The modified asphalt formula of this embodiment is as follows: matrix asphalt 5kg, composite reinforcing fiber is formed by compounding 50g basalt fiber and 100g polyester fiber, additives include 100g compatibilizer, 50gSBS, 60gEVA, 3.5g sulfur powder, 100g rubber powder, 20g terpene resin, 50g thermoplastic rubber and 2g anti-peeling agent; the rubber powder includes 49.0wt% rubber hydrocarbon, 11.5wt% acetone extract, 32.0wt% carbon black and 7.5wt% ash.

[0046] The preparation method is the same as in Example 1. The modified resin prepared in this example was subjected to a performance test, and the test results are shown in Table 2.

[0047] Table 2

[0048]

[0049]

Embodiment 3

[0051] The modified asphalt formula of this embodiment is as follows: matrix asphalt 5kg, composite reinforcing fiber is formed by compounding 50g basalt fiber and 50g polyester fiber, additives include 80g compatibilizer, 80gSBS, 20gEVA, 0.6g sulfur powder, 150g rubber powder, 100g terpene resin, 40g thermoplastic rubber and 8g anti-peeling agent; the rubber powder includes 49.0wt% rubber hydrocarbon, 11.5wt% acetone extract, 32.0wt% carbon black and 7.5wt% ash.

[0052] The preparation method is the same as in Example 1. The modified resin prepared in this example was subjected to a performance test, and the test results are shown in Table 3.

[0053] table 3

[0054]

[0055] The thermal stability test was carried out on Examples 1-3, and the thermal stability test was evaluated by the dynamic stability (rutting test) test. Take the modified asphalt without adding composite reinforcing fiber, and the other components and preparation method are the same as those in Exam...

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Abstract

The invention discloses a high-viscosity modified asphalt and a preparation method thereof, belonging to the technical field of road engineering materials. The high-viscosity modified asphalt raw materials include: 500 parts of matrix asphalt, 300-400 parts of additives and 10-20 parts of composite reinforcing fibers; The composite reinforcing fiber is prepared by compounding basalt fiber and polyester fiber and then wrapping the asphalt matrix film; when preparing high-viscosity modified asphalt, the present invention can not only greatly improve the cohesiveness of the asphalt pavement by adding composite reinforcing fiber , high temperature stability, fatigue durability, and has the performance of low temperature crack resistance and reflection crack prevention. Effectively improve tensile, shear, compressive and impact strength, improve thermal stability and low temperature resistance.

Description

technical field [0001] The invention relates to the technical field of road engineering materials, in particular to a high-viscosity modified asphalt and a preparation method thereof. Background technique [0002] Asphalt pavement refers to various types of pavement paved with asphalt materials mixed with mineral materials. Asphalt binder improves the ability of paving aggregates to resist road damage from driving and natural factors, making the road smooth, less dusty, impermeable and durable. Therefore, asphalt pavement is the most widely used high-grade pavement in road construction. [0003] With the development of China's highway transportation, my country's highway construction is entering a period of rapid development. New conditions such as high speed, heavy load and bearing complex stress have put forward higher requirements for high-grade road surfaces. The traditional densely graded asphalt concrete pavement is prone to problems such as slipping, water drift, sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L23/08C08L45/00C08L21/00C08L67/00C08L91/00C08K13/04C08K7/10C08K3/06C08K3/04C08J5/04
Inventor 颜立景饶奇范明霞周晓雨杨杰
Owner 河北长大交通科技有限公司
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