Unlock instant, AI-driven research and patent intelligence for your innovation.

Regeneration of waste SBS (styrene butadiene styrene) modified asphalt mixture

A technology of modified asphalt and mixture, applied in the field of asphalt, can solve the problems of complex equipment and cumbersome process, and achieve the effect of simple and easy operation of equipment

Inactive Publication Date: 2011-04-13
杨世英
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first two methods have cumbersome processes and complex equipment. Due to the particularity of asphalt mixture regeneration and the simultaneity of old asphalt regeneration and road paving, this requires a convenient, quick, simple and flexible method.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] The present invention will be further described below in conjunction with embodiment:

[0007] The specific operation process is as follows:

[0008] (1) Break the two kinds of waste SBS modified asphalt mixtures into granules, spread them out to dry to pre-remove most of the water, weigh them, and pour them into containers.

[0009] (2) Add benzene (volume ratio 1:1) into the container, stir to make it fully melt for more than 2 hours (after pouring out the asphalt extract, repeat step (2), and wash it again with solvent to make the mixture medium asphalt and SBS are all dissolved in the solvent).

[0010] (3) Heat the obtained waste SBS modified asphalt extract, and carry out hot suction filtration to remove the mineral powder in the solution (if the ash content in the recovered waste SBS modified asphalt is greater than 1%, the penetration will be affected. Accuracy of softening point, ductility or viscosity test. In order to completely remove the mineral powd...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides regeneration of a waste SBS (styrene butadiene styrene) modified asphalt mixture. The invention comprises two waste SBS modified asphalt mixtures ST-1 and ST-2, asphalt is required to be recycled from the waste SBS modified asphalt mixture for matching of a regenerated SBS modified asphalt mixture, and the physical property change of waste SBS modified asphalt and asphalt content in the waste SBS modified asphalt mixture are measured. A solvent extraction method is adopted, firstly a solvent is utilized to melt waste asphalt and SBS in the waste SBS modified asphalt mixture, and the solvent in the mixed solution of the waste asphalt, SBS and the solvent is recycled by adopting distillation method. The waste asphalt mixture is two waste SBS modified asphalt mixtures ST-1 and ST-2 with surface courses roughened, and 15cm is dug. The invention has the advantages that operational equipment is simple and is easy to operate, and total content of SBS and waste asphalt in waste SBS modified asphalt mixture is measured while recycling asphalt.

Description

technical field [0001] The invention relates to asphalt, in particular to a method for regenerating waste SBS modified asphalt mixture. Background technique [0002] The expressways in our country are developing rapidly. Some early highways are currently in the period of overhaul, and a large amount of waste SBS modified asphalt mixture is produced during the maintenance process. The discharge of these wastes not only occupies a large piece of land, wastes resources, but also causes permanent environmental pollution. The preparation methods of petroleum asphalt mainly include the preparation of straight-run asphalt by vacuum deep drawing process, the production of oxidized asphalt by oxidation method, and the production of blended asphalt by blending method. The first two methods have cumbersome processes and complex equipment. Due to the particularity of asphalt mixture regeneration and the simultaneity of old asphalt regeneration and road paving, this requires a convenien...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/08C08L95/00C08L53/02
CPCY02W30/62
Inventor 杨世英
Owner 杨世英