Abstract: Methods and systems for efficiently manufacturing modified asphalt materials include agitating a base asphalt at a high shear rate using an in-line mixer while simultaneously exposing the asphalt to oxygen by blowing an oxygen-containing gas at a high gas flow rate through openings in the in-line mixer and heating the asphalt at an elevated temperature.
Type:
Grant
Filed:
March 14, 2011
Date of Patent:
February 19, 2013
Assignee:
Asphalt Technology LLC.
Inventors:
Michael V. Burris, Bryan B. Burris, Hossein Ajideh, Andrew Clayton
Abstract: A method for modifying asphalt comprises blowing an oxygen-containing gas through a base asphalt at a high gas flow rate while simultaneously agitating the base asphalt at a high shear rate and at an elevated temperature for a period of time that is effective to substantially improve at least two paving properties of the base asphalt. In preferred embodiments, modified asphalts are produced having both substantially improved rutting resistance and substantially improved fatigue resistance as compared to the base asphalt.
Type:
Grant
Filed:
August 2, 2011
Date of Patent:
August 28, 2012
Assignee:
Asphalt Technology LLC
Inventors:
Michael V Burris, Bryan B Burris, Hossein Ajideh
Abstract: Methods and systems for efficiently manufacturing modified asphalt materials include agitating a base asphalt at a high shear rate using an in-line mixer while simultaneously exposing the asphalt to oxygen by blowing an oxygen-containing gas at a high gas flow rate through openings in the in-line mixer and heating the asphalt at an elevated temperature.
Type:
Application
Filed:
March 14, 2011
Publication date:
March 15, 2012
Applicant:
ASPHALT TECHNOLOGY LLC.
Inventors:
Michael V. Burris, Bryan B. Burris, Hossein Ajideh, Andrew Clayton
Abstract: A method for modifying asphalt comprises blowing an oxygen-containing gas through a base asphalt at a high gas flow rate while simultaneously agitating the base asphalt at a high shear rate and at an elevated temperature for a period of time that is effective to substantially improve at least two paving properties of the base asphalt. In preferred embodiments, modified asphalts are produced having both substantially improved rutting resistance and substantially improved fatigue resistance as compared to the base asphalt.
Type:
Grant
Filed:
January 14, 2010
Date of Patent:
August 2, 2011
Assignee:
Asphalt Technology LLC
Inventors:
Michael V Burris, Bryan B Burris, Hossein Ajideh
Abstract: Methods and systems for efficiently manufacturing modified asphalt materials include agitating a base asphalt at a high shear rate using an in-line mixer equipped with a rotor-stator mixing tool while simultaneously exposing the asphalt to oxygen by blowing an oxygen-containing gas at a high gas flow rate through openings in the rotor-stator mixing tool and heating the asphalt at an elevated temperature.
Type:
Grant
Filed:
June 12, 2009
Date of Patent:
March 15, 2011
Assignee:
Asphalt Technology LLC
Inventors:
Michael V. Burris, Bryan B. Burris, Hossein Ajideh, Andrew Clayton
Abstract: Methods and systems for efficiently manufacturing modified asphalt materials include agitating a base asphalt at a high shear rate using an in-line mixer equipped with a rotor-stator mixing tool while simultaneously exposing the asphalt to oxygen by blowing an oxygen-containing gas at a high gas flow rate through openings in the rotor-stator mixing tool and heating the asphalt at an elevated temperature.
Type:
Application
Filed:
June 12, 2009
Publication date:
December 17, 2009
Applicant:
ASPHALT TECHNOLOGY LLC
Inventors:
Michael V. Burris, Bryan B. Burris, Hossein Ajideh, Andrew Clayton
Abstract: A method for modifying asphalt comprises blowing an oxygen-containing gas through a base asphalt at a high gas flow rate while simultaneously agitating the base asphalt at a high shear rate and at an elevated temperature for a period of time that is effective to substantially improve at least two paving properties of the base asphalt. In preferred embodiments, modified asphalts are produced having both substantially improved rutting resistance and substantially improved fatigue resistance as compared to the base asphalt.
Type:
Grant
Filed:
June 21, 2005
Date of Patent:
May 20, 2008
Assignee:
Asphalt Technology, LLC.
Inventors:
Michael V. Burris, Bryan B. Burris, Hossein Ajideh