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Modified asphalt particles and preparation method thereof

A technology of modified asphalt and granules, which is applied to building components, building insulation materials, building structures, etc., can solve the problems of large manpower consumption, hidden dangers of material and financial resources, difficulty in industrial application, and failure to adapt to road surface performance. Reduced environmental and health hazards, excellent road performance, and reduced temperature sensitivity

Inactive Publication Date: 2015-12-23
SHANXI PROVINCIAL RES INST OF COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The storage and transportation of traditional asphalt requires special treatment, which consumes a lot of manpower, material resources, and financial resources, and has high potential safety hazards. Therefore, storage and transportation are inconvenient, and it is impossible to accurately measure and sell
[0004] Chinese patent (CN102532923A) discloses a preparation method of granular modified asphalt, but its modifiers have limitations, mainly lake asphalt and rock asphalt, which do not meet the needs of pavement performance in different regions, have single functions, and Whether asphalt particles will stick during storage and transportation has not yet been clarified, and industrial application is difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The composition of raw materials by weight is as follows: 60 parts of high-temperature asphalt, 1 part of PPA modifier, 0.5 part of SBR modifier, 10 parts of nano-mineral powder, 10 parts of nano-fly ash, 2 parts of PAHs smoke suppressant, JAR type asphalt anti-aging 3 parts of agent, 3 parts of hydroxymethyl cellulose, 2 parts of glutaraldehyde.

[0019] The preparation method is as follows: first heat and melt 60 parts of high-temperature asphalt, then add 0.5 parts of SBR modifier for shear blending, then add 1 part of PPA, stir and develop for 3 hours, then add 10 parts of nano-mineral powder, 10 parts of nano-powdered coal Add ash, shear and blend evenly, and finally add 2 parts of PAHs smoke suppressant, 3 parts of JAR type asphalt antiaging agent, 3 parts of hydroxymethyl cellulose, and 2 parts of glutaraldehyde, and stir evenly. The prepared molten high-performance modified asphalt is extruded through an asphalt granulator or a single-screw extruder to prepare h...

Embodiment 2

[0022] The composition of raw materials by weight is as follows: 70 parts of high-temperature asphalt, 3 parts of anti-rutting agent, 15 parts of nano diatomite, 3 parts of magnesium hydroxide, 2 parts of tallow propylene diamine, 4 parts of polyisobutylene, 1 part of rubber powder, isocyanate 2 servings.

[0023] The preparation method is as follows: first heat and melt 70 parts of high-temperature asphalt, then add 3 parts of anti-rutting agent and shear and blend evenly, then add 15 parts of nano diatomite, shear and blend evenly, and finally add 3 parts of magnesium hydroxide, 2 parts of tallow propylene diamine, 4 parts of polyisobutylene, 1 part of rubber powder, 2 parts of isocyanate, stir well. The prepared molten high-performance modified asphalt is extruded through an asphalt granulator or a single-screw extruder to prepare high-performance modified asphalt pellets, which are measured and packaged for storage, transportation and sales.

[0024] Test results: dynamic...

Embodiment 3

[0026] The composition of raw materials by weight is as follows: 55 parts of high-temperature asphalt, 3 parts of SBR, 10 parts of nano-calcium carbonate powder, 8 parts of nano-montmorillonite, 2 parts of magnesium hydroxide, 2 parts of aluminum hydroxide, 2 parts of ACNA, 1 part of PNS, polymethacrylic acid 2 parts of ester, 2 parts of silane coupling agent KH550.

[0027] The preparation method is as follows: first heat and melt 55 parts of base asphalt, then add 3 parts of SBR and shear and blend evenly, then add 10 parts of nano-calcium carbonate powder and 8 parts of nano-montmorillonite, shear and blend evenly, and finally mix 2 parts 1 part of magnesium hydroxide, 2 parts of aluminum hydroxide, 2 parts of ACNA, 1 part of PNS, 2 parts of polymethacrylate, 2 parts of silane coupling agent, and stir well. The prepared molten high-performance modified asphalt is extruded through an asphalt granulator or a single-screw extruder to prepare high-performance modified asphalt p...

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Abstract

The invention belongs to the modified asphalt technical field, and in particular, relates to modified asphalt particles and a preparation method thereof. The modified asphalt particles comprise the raw materials in parts by mass: 55-85 parts of an asphalt main agent, 1-15 parts of a particle asphalt modifier, 10-20 parts of a particle forming agent, 1-5 parts of a smoke inhibitor, 1-5 parts of an antioxidant, 1-5 parts of a particle thickening agent and 1-5 parts of a particle crosslinking agent. Compared with the prior art, the modified asphalt particles can enhance high-temperature performance, low-temperature performance, water stability and aging resistance of an asphalt mixture; the elasticity and the softening point of asphalt are improved, and the temperature sensitivity and water permeability are reduced; the modified asphalt particles can be produced on large scale; asphalt smoke production of the asphalt under high temperature operation is reduced, the harm to environment and health is reduced, and the problems that traditional liquid asphalt is difficult to store and transport, high in expense and high in security hidden danger are completely changed; and a bonding phenomenon at the temperature of 70-80 DEG C is not generated, metering packaging storage transportation sales is achieved, and trade management is facilitated.

Description

technical field [0001] The invention belongs to the technical field of modified asphalt, and specifically relates to a modified asphalt particle and a preparation method thereof. Background technique [0002] Since the reform and opening up, my country's highway construction has developed rapidly. As of the end of 2013, the total mileage of highways in China reached 4.3562 million kilometers; according to the "Twelfth Five-Year Plan" development plan for transportation, it is estimated that the total mileage of the road network will reach 4.5 million kilometers in 2015; according to the national road network plan, from 2013 to 2030, China The total planning scale of ordinary national roads and national expressways is about 400,000 kilometers, and the investment is expected to be 4.7 trillion yuan, so the road construction and maintenance market is huge. [0003] As an important pavement material, asphalt is widely used in road surface paving due to its excellent waterproof,...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L21/00C08L23/06C08L23/12C08L23/08C08L63/00C08L1/28C08L23/22C08L33/12C08L77/06C08K13/02C08K3/34C08K3/26C08K3/22C08K3/38C08K5/07
Inventor 王威马德崇樊长昕杜素军舒兴旺段宝红丰功吉刘鹏飞
Owner SHANXI PROVINCIAL RES INST OF COMM