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High-temperature-resistant anti-rutting asphalt mixture and preparation method thereof

An asphalt mixture, anti-rutting technology, applied in the field of asphalt mixture, to achieve good self-repair and recyclable performance, stable mechanical properties, improve mechanical properties and anti-rutting performance

Active Publication Date: 2020-08-25
SHANDONG HUITONG CONSTR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of high temperature resistant anti-rutting asphalt mixture and its preparation method, to solve the problems in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] S1: Prepare materials;

[0049] S2: Preparation of porous additives:

[0050] Take 2-bromoisobutyryl bromide, dissolve it in ether, and stir for 10 minutes to obtain solution A; take ethylene glycol, dissolve it in ether, stir for 10 minutes, then place it in an ice-water bath, slowly add solution A dropwise, and stir at room temperature for 16 hours to obtain trigger agent;

[0051] Take the initiator, catalyst, 1,1,4,7,10,10-hexamethyltriethylenetetramine and styrene, mix and stir for 10 minutes, freeze, vacuumize, heat under nitrogen atmosphere until the materials are dissolved, and place Heat in an oil bath at 110°C for 7 hours, add toluene and alumina, continue to stir for 15 minutes, then add ethanol, collect the precipitate, and dry it in vacuum at 60°C to obtain modified polystyrene;

[0052] Take modified polystyrene, dissolve in toluene, add triethylaluminum toluene solution, stir for 12 hours, add L-lactide under nitrogen environment, continue to freeze, va...

Embodiment 2

[0064] S1: Prepare materials;

[0065] S2: Preparation of porous additives:

[0066] Take 2-bromoisobutyryl bromide, dissolve it in ether, and stir for 15 minutes to obtain solution A; take ethylene glycol, dissolve it in ether, stir for 15 minutes, then place it in an ice-water bath, slowly add solution A dropwise, and stir at room temperature for 18 hours to obtain Initiate agent;

[0067] Take the initiator, catalyst, 1,1,4,7,10,10-hexamethyltriethylenetetramine and styrene, mix and stir for 15 minutes, freeze, vacuumize, heat under nitrogen atmosphere until the materials are dissolved, and place Heat in an oil bath at 112°C for 7.2h, add toluene and alumina, continue to stir for 18min, then add ethanol, collect the precipitate, and dry it in vacuum at 60°C to obtain modified polystyrene;

[0068] Take modified polystyrene, dissolve in toluene, then add the toluene solution of triethylaluminum, stir for 13 hours, add L-lactide under nitrogen atmosphere, continue to freeze...

Embodiment 3

[0080] S1: Prepare materials;

[0081] S2: Preparation of porous additives:

[0082] Take 2-bromoisobutyryl bromide, dissolve it in ether, and stir for 20 minutes to obtain solution A; take ethylene glycol, dissolve it in ether, stir for 20 minutes, then place it in an ice-water bath, slowly add solution A dropwise, and stir at room temperature for 20 hours to obtain trigger agent;

[0083] Take the initiator, catalyst, 1,1,4,7,10,10-hexamethyltriethylenetetramine and styrene, mix and stir for 20 minutes, freeze, vacuumize, heat under nitrogen atmosphere until the materials are dissolved, and place Heat in an oil bath at 115°C for 7.5h, add toluene and alumina, continue to stir for 20min, then add ethanol, collect the precipitate, and dry it in vacuum at 60°C to obtain modified polystyrene;

[0084]Take modified polystyrene, dissolve in toluene, then add the toluene solution of triethylaluminum, stir for 14 hours, add L-lactide under nitrogen environment, continue to freeze,...

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PUM

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Abstract

The invention discloses a high-temperature-resistant anti-rutting asphalt mixture and a preparation method thereof. The asphalt mixture is prepared from, by weight, 15-18 parts of pretreated asphalt,30-35 parts of zinc chloride, 5-10 parts of a heat conduction material, 8-12 parts of glass fibers, 5-10 parts of an admixture and 90-100 parts of an aggregate. The pretreated asphalt is prepared fromthe following raw materials by weight: 8 to 14 parts of modified asphalt, 6 to 8 parts of dihydroxyl-terminated polydimethylsiloxane, 14 to 16 parts of polycaprolactone glycol, 2 to 4 parts of 1,6-hexamethylene diisocyanate, 0.5 to 1 part of dibutyltin dilaurate, 4 to 6 parts of 4,4'-dimethyl-2,2'-dipyridyl and 0.5 to 0.8 part of 1,4-butanediol. The asphalt mixture is reasonable in process designand proper in component proportion, the prepared asphalt mixture has excellent anti-rutting capacity, the high-temperature stability and the water stability of the asphalt mixture are improved, and the asphalt mixture can be applied to roads with large traffic volume and more heavy-load and overload vehicles and has higher practicability.

Description

technical field [0001] The invention relates to the technical field of asphalt mixture, in particular to a high-temperature-resistant and rutting-resistant asphalt mixture and a preparation method thereof. Background technique [0002] Asphalt mixture is a composite material, mainly composed of asphalt, coarse aggregate, fine aggregate, mineral powder, and some polymers and wood cellulose are added; different structures are formed by mixing these materials with different qualities and quantities. And have different mechanical properties; the material is widely used in road traffic and housing construction in various cities. [0003] Today's asphalt pavement is exposed to the outdoors for a long time, and factors such as temperature changes and ultraviolet radiation will cause the aging of the asphalt mixture. At the same time, higher requirements are placed on the high temperature stability and rutting resistance of the asphalt mixture. [0004] Aiming at this problem, we h...

Claims

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Application Information

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IPC IPC(8): C04B26/32
CPCC04B26/32C04B24/36C04B24/283C04B24/125C04B24/40C04B24/128C04B24/026C04B24/281C04B24/282C04B2103/0068C04B24/2676C04B24/045C04B22/12C04B22/085C04B22/0013C04B22/124C04B14/42C04B14/02C04B18/146C04B18/08C04B14/00Y02W30/91
Inventor 马瓯丽
Owner SHANDONG HUITONG CONSTR GRP CO LTD
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