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A low-temperature-resistant high-modulus asphalt modifier and its preparation method

An asphalt modifier, high modulus technology, applied in building insulation materials, building components, buildings, etc., can solve the problem of simultaneously improving the low-temperature crack resistance and high-temperature rutting resistance of asphalt pavement, and affecting the performance of asphalt modifiers In order to achieve the effects of obvious compatibility, prolong the service life and enhance the ease of construction

Active Publication Date: 2016-07-06
JIANGSU SOBUTE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The relationship between the rheological properties and temperature of existing waste rubber powder and plastics in high temperature environment is quite different, which leads to obvious differences in thermal processing processability of the two. The problem of uneven distribution of the asphalt modifier affects the stability of the performance of the asphalt modifier;
[0013] And for "direct-in" asphalt modification products, increasing the modulus of asphalt requires the use of more plastics, and there are asphalt modifiers prepared by blending high-volume plastic polymers with waste rubber powder to disperse in asphalt The effect is not ideal, so it is difficult to improve the low-temperature crack resistance and high-temperature anti-rutting performance of asphalt pavement at the same time

Method used

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  • A low-temperature-resistant high-modulus asphalt modifier and its preparation method
  • A low-temperature-resistant high-modulus asphalt modifier and its preparation method
  • A low-temperature-resistant high-modulus asphalt modifier and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0040] Preparation of low-temperature-resistant high-modulus asphalt modifier: put 50 parts of 40-mesh waste shoe sole rubber powder and 2 parts of silane coupling agent solution into a stirring tank, and stir for 15 minute, stop stirring, take it out, and continue drying at 120 degrees for 30 minutes; mix 21 parts of low-density polyethylene powder (molecular weight range 5-500,000), 21 parts of linear low-density polyethylene powder (molecular weight range 10-500,000) 1. Put 6 parts of natural asphalt powder and the above-mentioned surface-treated waste rubber powder into a stirring kettle together, stir for 5 minutes at normal temperature and a stirring rate of 800r / min, take it out, and set aside.

[0041] Preparation of binder: 55 parts of 7# aromatic oil for modified asphalt, 20 parts of carbon 9 modified petroleum resin, 14 parts of styrene-butadiene-styrene block copolymer, 0.5 part of antioxidant and 10.5 parts Parts of 70# bitumen were put into the reaction kettle to...

Embodiment 2

[0047] Preparation of low-temperature-resistant, high-modulus main agent: put 50 parts of 40-mesh waste shoe sole rubber powder and 2 parts of silane coupling agent solution into a stirring tank, and stir for 15 minutes at room temperature at a stirring rate of 800r / min. Stop stirring, take it out, and continue drying at 120 degrees for 30 minutes; 21 parts of low-density polyethylene powder (molecular weight range 5-500,000), 21 parts of linear low-density polyethylene powder (molecular weight range 10-500,000), 6 Parts of 40 mesh barium sulfate powder and the above-mentioned surface-treated waste rubber powder were put into a stirring tank, stirred at room temperature and a stirring rate of 800r / min for 5 minutes, taken out, and set aside.

[0048] Preparation of binder: Put 75 parts of 7# aromatic oil for modified asphalt, 14 parts of bentonite, 4 parts of maleic anhydride grafted polyethylene, 1.5 parts of antioxidant and 5.5 parts of 70# asphalt into the reaction kettle to...

Embodiment 3

[0054] Preparation of low-temperature-resistant, high-modulus main agent: put 50 parts of 40-mesh waste shoe sole rubber powder and 2 parts of silane coupling agent solution into a stirring tank, and stir for 15 minutes at room temperature at a stirring rate of 800r / min. Stop stirring, take it out, and continue drying at 120 degrees for 30 minutes; 21 parts of low-density polyethylene powder (molecular weight range 5-500,000), 21 parts of linear low-density polyethylene powder (molecular weight range 10-500,000), 6 1 part organic bentonite and 40-mesh barium sulfate powder are mixed in a ratio of 1:1 and put into a stirring tank together with the above surface-treated waste rubber powder, stirred at room temperature and a stirring rate of 800r / min for 5 minutes, taken out, and set aside.

[0055] Preparation of binder: 82 parts of 5# aromatic oil for modified asphalt, 5 parts of carbon 5 modified petroleum resin, 5 parts of polystyrene-butadiene copolymer, 3 parts of antioxidan...

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Abstract

The invention provides a low temperature resistant high modulus composite asphalt modifier and a preparation method thereof. The low-temperature-resistant high-modulus asphalt modifier of the present invention is composed of the following raw materials: a low-temperature-resistant high-modulus main agent, a reinforced binder, and a release agent; Solubilizers. The low-temperature-resistant high-modulus asphalt modifier of the present invention is a polymer composite additive for asphalt, which can comprehensively enhance the high-low temperature performance of asphalt, and significantly improve the low-temperature crack resistance, high-temperature rutting resistance and resistance to asphalt pavement. Water damages performance.

Description

technical field [0001] The invention belongs to the technical field of asphalt modification, and in particular relates to a low-temperature-resistant high-modulus composite asphalt modifier and a preparation method. Background technique [0002] Asphalt is a cementing material for pavement structures widely used in road engineering. It can significantly improve the ability of paving aggregates to resist road damage caused by driving and natural factors. After matching with different types and compositions of mineral materials in a certain proportion, it can Build asphalt pavements suitable for different traffic environments and with different structures. [0003] Since the implementation of the "Seventh Five-Year Plan", the construction of high-grade highways in my country has developed rapidly. By the end of 2012, the total mileage of national highways reached 4,237,500 kilometers, an increase of 131,100 kilometers over the end of the previous year, and the national express...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L21/00C08L23/06C08L23/08C08K13/02C08K5/01C08K3/26C08K5/13
Inventor 洪锦祥蔡广楠张德育陈香邓成林俊涛耿磊熊子佳
Owner JIANGSU SOBUTE NEW MATERIALS
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