A modified asphalt mixture with good weather resistance and its preparation method

A modified asphalt and mixture technology, applied in the field of modified asphalt, can solve the problems of asphalt hardening and cracking, reduce the road performance and service life of asphalt pavement, and achieve the extension of road life, excellent anti-aging performance, and enhanced heat resistance Effect

Active Publication Date: 2021-03-16
湖北津泰环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, like most organic compounds, SBS-modified asphalt will also be affected by high temperature, oxygen, ultraviolet radiation, etc. during storage, transportation, paving and long-term service, which will cause asphalt hardening and cracking, which seriously reduces the quality of the asphalt. Road performance and service life of pavement

Method used

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  • A modified asphalt mixture with good weather resistance and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of SBS modified bitumen is obtained through the following steps:

[0036]Step 1. Weigh the raw materials according to the following parts by weight: 100 parts of base asphalt, 5 parts of SBS modifier, 3.5 parts of xylan-chitosan complex, poly(dicyclopentadiene-co-p-cresol) 5 parts, 3 parts of polyacrylamide methyl benzylidene camphor, 0.7 parts of decyl acrylonitrile dimethyl siloxane and 0.8 parts of 4-benzoyloxy-2,2,6,6-tetramethylpiperidine share;

[0037] Step 2, heating the base asphalt to 135-145°C, adding SBS modifier, xylan-chitosan complex, poly(dicyclopentadiene-co-p-cresol), polypropylene to the base asphalt Amidomethylbenzylidene camphor, decylacrylonitrile dimethylsiloxane and 4-benzoyloxy-2,2,6,6-tetramethylpiperidine, heat up to 170~190℃, keep the reaction temperature, stirring for 20-30min to make the raw materials mix evenly, grind in the colloid mill for 0.5-1h, after stopping the colloid mill, keep the reaction temperature at 170-190°C, and c...

Embodiment 2

[0039] A kind of SBS modified bitumen is obtained through the following steps:

[0040] Step 1. Weigh the raw materials according to the following parts by weight: 100 parts of base asphalt, 5 parts of SBS modifier, 3.5 parts of xylan-chitosan complex, poly(dicyclopentadiene-co-p-cresol) 5 parts, 3 parts of polyacrylamide methyl benzylidene camphor, 0.7 parts of decyl acrylonitrile dimethyl siloxane and 0.8 parts of 4-benzoyloxy-2,2,6,6-tetramethylpiperidine share;

[0041] Step 2, heating the base asphalt to 135-145°C, adding SBS modifier, xylan-chitosan complex, poly(dicyclopentadiene-co-p-cresol), polypropylene to the base asphalt Amidomethylbenzylidene camphor, decylacrylonitrile dimethylsiloxane and 4-benzoyloxy-2,2,6,6-tetramethylpiperidine, heat up to 170~190℃, keep the reaction temperature, stirring for 20-30min to make the raw materials mix evenly, grind in the colloid mill for 0.5-1h, after stopping the colloid mill, keep the reaction temperature at 170-190°C, and ...

Embodiment 3

[0043] A kind of SBS modified bitumen is obtained through the following steps:

[0044] Step 1. Weigh the raw materials according to the following parts by weight: 95 parts of base asphalt, 4 parts of SBS modifier, 2 parts of xylan-chitosan complex, poly(dicyclopentadiene-co-p-cresol) 3 parts, 2.5 parts of 3,4'-methylbenzylidene camphor, 0.5 parts of decylacrylonitrile dimethylsiloxane, and 4-benzoyloxy-2,2,6,6-tetramethylpiperidine 0.5 servings;

[0045] Step 2, heating the base asphalt to 135-145 ℃, adding SBS modifier, xylan-chitosan complex, poly(dicyclopentadiene-co-p-cresol), 3, 4'-methylbenzylidene camphor, decylacrylonitrile dimethylsiloxane and 4-benzoyloxy-2,2,6,6-tetramethylpiperidine, heat up to 170-190°C, keep At the reaction temperature, stir for 20-30 minutes to make the raw materials evenly mixed, and grind them in a colloid mill for 0.5-1 h. After stopping the colloid mill, keep the reaction temperature at 170-190°C and continue stirring for 2-3 hours to obt...

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Abstract

The invention belongs to the technical field of modified asphalt and discloses a modified asphalt mixture with good weather resistance and a preparation method thereof. The modified asphalt mixture isprepared from the following components in parts by weight: 15 to 30 parts of SBS (Styrene-Butadiene-Styrene) modified asphalt, 2 to 3 parts of mullite, 3 to 4 parts of hibiscus cannabinus fiber, 3 to6 parts of extracted oil and 100 to 150 parts of aggregate. The modified asphalt mixture with good weather resistance, provided by the invention, has good anti-ageing performance, relatively strong anti-deformation performance and high-temperature stability based on the effect of the SBS modified asphalt and the effects of the mullite and the hibiscus cannabinus fibers.

Description

technical field [0001] The invention belongs to the technical field of modified asphalt, in particular to a modified asphalt mixture with good weather resistance and a preparation method thereof. Background technique [0002] Asphalt mixture is the material used in the construction of asphalt pavement, and asphalt pavement refers to various types of pavement paved with mineral materials mixed with road asphalt materials. Asphalt pavement has the advantages of comfortable driving, low energy consumption, easy maintenance, etc., the proportion of asphalt pavement in highway construction is getting higher and higher. However, ordinary asphalt has poor high and low temperature performance, and the pavement paved with it is prone to diseases such as rutting and potholes, and has a short service life, especially under heavy traffic conditions. To solve this problem, asphalt is usually modified with polymers to improve the road performance of asphalt mixtures. Among them, styrene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B111/20
CPCC04B26/26C04B2111/0075C04B2111/20C04B24/38C04B24/2676C04B24/28C04B24/2652C04B24/42C04B24/128C04B18/248C04B14/4656C04B14/14C04B24/00
Inventor 宗博
Owner 湖北津泰环保科技有限公司
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