Minimizing reflection cracking of pavement overlays
By: George Sherman ; research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration.
Contributors: American Association of State Highway and Transportation Officials.; United States. Federal Highway Administration.; National Research Council (U.S.). Transportation Research Board.
Series: Synthesis of highway practice,; 92
Publisher: Transportation Research Board, National Research Council
Published: 1982
Place of publication: Washington, D.C
Language: eng
Number of pages: 38
Subjects: Pavements -- Cracking.; Pavements -- Maintenance and repair.
Description: Reflection cracks are fractures in a pavement overlay that are the result of, and reflect, the crack of joint pattern in the underlying layer. Reflections cracks can cause early deterioration of an overlay, thereby increasing maintenance costs and decreasing the useful life of the overlay. Methods to minimize reflection cracking of asphalt concrete overlays include (a) greater thickness of overlay, (b) changes in the viscosity of the asphalt, (c) additives incorporated into the asphalt concrete mix, (d) treatments to the existing pavement before overlaying and (e) incorporating stress relieving layers. The results of the various tests using these methods are presented.
Notes: Includes bibliographical references.
"September 1982."