Method and system for in-situ cross linking of polymers, bitumen and similar materials to increase strength, toughness and durability via irradiation with electron beams from mobile accelerators

Patent metadata

Field	Value
Publication number	US-9186645-B2
Application number	US-201314022365-A
Country	US
Kind code	B2
Filing date	Sep 10, 2013
Priority date	Sep 10, 2013
Publication date	Nov 17, 2015
Grant date	Nov 17, 2015

Abstract

A method and system for treating and strengthening material. One or more electron accelerators can be integrated with a mobile unit. The electron accelerators are positioned on the mobile unit to irradiate and treat in-situ, a material located proximate to the mobile unit, wherein irradiation of the material by the electron accelerators results in in-situ cross-linking or polymerization of the material and therefore a strengthening and increased durability of the material. The in-situ treatment of a road surface to toughen and strengthen the road surface constructed with standard asphalt construction can result in improved material properties of the surface, enhanced durability, and improved lifetime.

First claim

What is claimed is:

1. A system for treating and strengthening a material comprising a surface, said system comprising:
a mobile unit;
at least one electron gun that emits a beam of electrons;
at least one electron accelerator integrated with the mobile unit and positioned to accelerate the beam of electrons; and
at least one beam extraction device comprising a scan coil that emits the accelerated beam of electrons, the at least one beam extraction device positioned on said mobile unit to irradiate the surface of and treat in-situ, the material located proximate to said mobile unit, wherein irradiation of said material by the beam of electrons results in in-situ cross-linking of said material and therefore a strengthening and increased durability of said material.

2. The system of claim 1 wherein said mobile unit comprises a vehicle-mounted unit that moves above and with respect to said road surface.

3. The system of claim 1 wherein said irradiation of said material induces said in-situ cross-linking, curing, or a material properties modification of said material.

4. The system of claim 1 wherein said mobile unit comprises a unit that moves with respect to said material being treated.

5. A system for treating and strengthening a road surface, said system comprising:
a mobile unit comprising a vehicle-mounted unit that moves above and with respect to a road surface;
at least one electron gun that emits a beam of electrons;
at least one electron accelerator integrated with the mobile unit and positioned to accelerate the beam of electrons; and
at least one beam extraction device comprising a scan coil that emits the accelerated beam of electrons, the at least one beam extraction device positioned on said mobile unit to irradiate and treat in-situ, the road surface, the road surface comprising a material comprising at least one of: asphalt, modified asphalt, or a cross-link capable binder-stone mixture, the road surface located proximate to said mobile unit, wherein irradiation of the road surface by the beam of electrons results in in-situ cross-linking of said material and therefore a strengthening and increased durability of the road surface.

6. The system of claim 5 wherein said irradiation of said material induces said in-situ cross-linking or curing of said material.

7. A method for treating and strengthening material comprising a surface, said method comprising:
integrating a plurality of electron accelerators with a mobile unit; and
positioning said plurality of electron accelerators on said mobile unit to irradiate the surface of and treat in-situ, the material, wherein the surface is located proximate to said mobile unit, wherein the material is cross-linkable, wherein irradiation of said material by said plurality of electron accelerators results in in-situ cross-linking of said material and therefore a strengthening and increased durability of said material.

8. The method of claim 7 wherein said mobile unit comprises a vehicle-mounted unit that moves above and with respect to said road surface.

Assignees

• Kephart Robert D
• Fermi Res Alliance Llc

Inventors

• Kephart Robert D

Classifications

• C08L95/00 Primary

  Compositions of bituminous materials, e.g. asphalt, tar, pitch · CPC title

• C08J3/28

  Treatment by wave energy or particle radiation · CPC title

• B01J19/085 Primary

  Electron beams only · CPC title

• E01C23/14

  for heating or drying foundation, paving, or materials thereon, e.g. paint (E01C23/03 takes precedence; heating or drying devices incorporated in the paving E01C11/26; surface {soil} stabilisation by fusing, calcining or burning soil in situ E01C21/02; for street cleaning E01H1/08; melting snow or ice on surfacing E01H5/10) · CPC title

• C08J2395/00

  Bituminous materials, e.g. asphalt, tar or pitch · CPC title