A kind of high modulus asphalt particle and preparation method thereof for road construction

A kind of asphalt granule and high modulus technology, applied in the direction of construction, building components, building structures, etc., can solve problems such as energy waste, safety hazards, environmental pollution, etc., and achieve the effect of reducing processing procedures, reducing costs, and reducing costs

Active Publication Date: 2017-07-21
SHANXI PROVINCIAL RES INST OF COMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only consumes a lot of manpower, material resources and financial resources, but also has great potential safety hazards.
In addition, the cost of liquid asphalt in storage, transportation and addition is relatively high, which is likely to cause environmental pollution and energy waste

Method used

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  • A kind of high modulus asphalt particle and preparation method thereof for road construction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Combine 5 parts of recycled polyethylene, 10 parts of recycled polypropylene, 2 parts of SBS, 3 parts of EVA, 2 parts of 2,6-di-tert-butyl-4-cresol, 2 parts of petroleum resin, and 1 part of rosin resin with Shell 90 # 75 parts of asphalt were sheared and stirred at 3500rpm at 175°C for 10-20min, then added 3 parts of MAH, 0.5 part of dicumyl peroxide, 0.5 part of zinc oxide and 0.5 part of sulfur, and sheared at 165°C at 2500rpm Stir for 10 minutes to obtain modified asphalt.

[0026] 2) Pass 50 parts of modified asphalt and 50 parts of nano-calcium carbonate through a twin-screw extruder to make modified asphalt granules.

Embodiment 2

[0028] 1) Mix 10 parts of recycled polyethylene, 5 parts of recycled polypropylene, 1.5 parts of diphenylisodecyl phosphite, 3.5 parts of rosin resin with Shell 90 # 80 parts of asphalt were sheared and stirred at 3500 rpm for 10-20 minutes at 175°C, then 2.5 parts of MAH and 1 part of ditoluyl peroxide were added, and sheared and stirred at 2500 rpm for 10 minutes at 165°C to obtain modified asphalt.

[0029] 2) Pass 60 parts of modified asphalt and 40 parts of nano-calcium carbonate through a twin-screw extruder to make modified asphalt granules.

Embodiment 3

[0031] 1) Mix 15 parts of SBS, 1 part of AO-80 anti-aging agent, 2 parts of rosin resin, 2 parts of petroleum resin with Shell 90 # 80 parts of asphalt were sheared and stirred at 175°C at 3500rpm for 10-20min, then 2 parts of MAH and 1 part of sulfur were added, and sheared and stirred at 165°C at 2500rpm for 10min to obtain modified asphalt.

[0032] 2) Pass 60 parts of modified asphalt and 40 parts of nano-calcium carbonate through a twin-screw extruder to make modified asphalt granules.

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Abstract

The invention relates to a high-modulus asphalt particle for road building and a preparation method thereof. The high-modulus asphalt particle comprises the following components in parts by mass: 40-80 parts of modified asphalt and 20-60 parts of filler, wherein the modified asphalt comprises the following raw materials in parts by mass: 10-20 parts of a polymer, 0.1-5 parts of an anti-aging agent, 2-4 parts of a thickener, 2-5 parts of a modifier, 1-3 parts of a crosslinking agent and 50-90 parts of matrix asphalt, wherein the matrix asphalt is one of Shell No. 70, Shell No.90, SK No. 70 and SK No. 90. Compared with the prior art, the preparation method is simple in process and low in cost, the waste utilization is achieved and the asphalt particle is suitable for industrial production; by the prepared high-modulus asphalt particle, the rutting resistance, low-temperature crack resistance, water damage resistance and aging resistance of asphalt concrete can be significantly improved and the service life of the asphalt pavement is prolonged; and the high-modulus asphalt particle is very safe and convenient to store and transport, is energy-saving and environment-friendly and has significant economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of asphalt preparation, and in particular relates to a high-modulus asphalt particle for road construction and a preparation method thereof. Background technique [0002] With the continuous development of the national economy, my country's road construction has developed very rapidly, and people's requirements for road construction have also continued to increase. Road construction and maintenance has become one of the issues that the government and the people pay close attention to. Transportation is an important link that restricts the development of the national economy. The vast majority of roads in my country are still low-grade and poor-quality road surfaces, so the annual investment in road construction can be described as huge. [0003] As an important component in asphalt pavement construction, asphalt is a by-product of crude oil distillation, composed of different C-H compounds, including more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L23/08C08L23/06C08L23/12C08L93/04C08L57/02C08K13/02C08K5/13C08K5/14C08K3/22C08K3/06C08K3/26C08K5/1539C08K5/526C08K5/3472
Inventor 马德崇赵队家王威樊长昕舒兴旺庞瑾瑜
Owner SHANXI PROVINCIAL RES INST OF COMM
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