Road structure – process – or apparatus – Process – In situ treatment of earth or roadway
Patent
1993-06-14
1995-04-11
Buiz, Michael Powell
Road structure, process, or apparatus
Process
In situ treatment of earth or roadway
404107, E01C 706
Patent
active
054052130
ABSTRACT:
A full depth thermal crack in an asphaltic pavement is repaired by spraying a first rejuvenating agent into the sides of the crack and over the top portion of the asphalt pavement surrounding the crack, heating the top portion of the asphalt to a predetermined temperature greater than 700.degree. F., scarifying the heated asphalt, adding an asphaltic rejuvenating/emulsion agent to the heated, scarified asphalt, compacting the heated, scarified asphalt into the crack for the full depth of the crack wherein heat in the asphalt added to the crack is transferred to the asphalt surrounding the crack to raise the temperature of the surrounding asphalt sufficient to form a homogeneous bond between the original and new asphalt added to the crack. In a preferred embodiment, the heated, scarified asphalt is added in predetermined quantities into the crack so as to fill the crack only to a predetermined depth and then compacted before additional quantities of asphalt are added and compacted in subsequent steps.
REFERENCES:
patent: 1230894 (1917-06-01), Harrop
patent: 3970404 (1976-07-01), Benedetti
patent: 4084915 (1978-04-01), Wiseblood
patent: 4815891 (1989-03-01), O'Connor
Sales Literature of Blackwell Burner Co.
Buiz Michael Powell
Lisehora James A.
Thermal Power Corporation
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